Trying to improve gaming performance
Hi, I own a Macbook that is about 3 years old now. I've been playing World of Warcraft, and while I read that other Macbook users push about 30-35fps, I get a whopping 12-15fps in quiet areas. I have a GMA X3100 graphics card.
ALL of my settings are set to the lowest, which I have no qualms about, it's just that I get a little sick of all the lag. My latency is low as well, usually running around 30-50 at most. What's going on? Why can't my Macbook run as well as the others?
The Late 2007 model 3,1 and the Early 2008 model 4,1 were the only models to use the GMA X3100 Video chip. More RAM would help with your gaming speed. To see which model you have go to the Apple in the upper left corner and select About This Mac, then click on More Info. When System Profiler comes up check the Model Identifier.
Model 3,1 (Late 2007) can handle 4gb of 667mhz PC2-5300 RAM
Model 4,1 (Early 2008) can handle 6gb of 667mhz PC2-5300 RAM
For RAM prices check DealRam.com http://dealnews.com/memory/prices/systems/Apple-Mac-Book-PC2-5300-DDR2-SODIMMS/4 3938/2GB.html
or OWC http://eshop.macsales.com/shop/memory/MacBook/DDR2/
Similar Messages
-
Anyone actually tried out the gaming performance?
Hey so I'm looking to get a new MacBook and was just hoping someone out there already to have one could slap something like the doom3 demo in just so we could hear first hand what its like. I realize its not a gaming computer and I'm not hoping for 40fps at high on graphically intense games, gaming will not be the main use of the laptop if I get one, I am just curious to hear how it is. I have actually gone throught the doom3 demo on my emac (despite the fact it is way below the requirements) with everything turned down and it wasn't bad as long as nothing onscreen moved. Anyways it would be cool to hear what game you tried, what kind of settings and whether it was smooth or a little choppy or what.
Thanks,
SteveI installed Warcraft on my wife's new MacBook. It is the low end model (1.83ghz) with 1gb of RAM. She was happy with the performance. I was not impressed.
Here are some metrics. I bumped all settings down to the minimum. The shader options are not available as integrated intel video *****. The terrain distance option was bumped to the 1/4 position (meaning just a bit longer than the shortest viewable terrain distance). No vertical sync. Hardware cursor and mouse were both enabled.
Machine lag was not an issue. Stormwind and Ironforge both were responsive enough, even when crossing into the drop zone near the Ironforge Auction house.
The framerates were not very good though. In heavily populated areas it was looking at 14-24 frames per second. It was smooth "enough" but anything less than 24 frames makes it not look as smooth.
The framerates in other areas was better but still not great. Now, it's time for a comparison...
Her Sony Vaio V505-DX with an onboard ATI 9200 at only 32mb performs much better at the same settings. The game is always played with shaders turned on, terrain about the same and all other settings on low. It always manages at least 30 frames per second.
The machine if you're curious:
http://www.amazon.com/gp/product/B0000D90BR/102-6634257-7920946?v=glance&n=54196 6
I'd say the move to using integrated video was a poor decision. I don't expect crazy performance but this move has further pushed the Mac away from mid-range gamers and potentially game developers. I would not game on one. My wife games maybe an hour or two an evening (we don't watch much TV) so this is an alright fit for her.
If Apple really wanted to bring the games to the Mac platform they would make it attractive to both parties (developers and consumers) but I don't feel they did a good job on that one. -
I'm trying to improve the performance on a query that is running very slowly.
SELECT p.book_id AS payment_book_id, b.status AS book_status,
p.status AS payment_status, p.supplier_ref_no AS data_cash_ref,
f.train_pnr_no AS train_pnr, f.train_id AS train_ref_id,
f.service_no AS train_service_no, h.hotel_pnr_no AS hotel_pnr,
h.hotel_id AS hotel_ref_id, h.service_no AS hotel_service_no,
b.total_book_amt AS hotel_amt, c.car_pnr_no AS car_pnr,
c.car_id AS car_ref_id, c.service_no AS car_service_no,
b.book_date, b.promo_code
FROM gk_payment p
LEFT JOIN gk_book b ON b.book_id = p.book_id
LEFT JOIN gk_train_itiner_det f ON p.book_id = f.book_id
LEFT JOIN gk_hotel_itiner_det h ON p.book_id = h.book_id
LEFT JOIN gk_car_itiner_det c ON p.book_id = c.book_id
WHERE ((b.status IN ('8') AND p.status IN ('2', '0', '1', '8', '7')) OR
(b.status IN ('5') AND p.status IN ('3')) OR
(b.status IN ('11') AND p.status IN ('4', '5')))
AND p.service_no IS NOT NULL
AND b.book_type = 1
ORDER BY train_id, car_idSome small comments about the query.
1) The first left join is not needed, since the where filter " AND b.book_type = 1" eliminates all cases where table b would be outer join (=empty).
FROM gk_payment p
LEFT JOIN gk_book b ON b.book_id = p.book_id
2) The status comparison can be written in a different way. This will probably not change anything performancewise
instead of
WHERE ((b.status IN ('8') AND p.status IN ('2', '0', '1', '8', '7')) OR
(b.status IN ('5') AND p.status IN ('3')) OR
(b.status IN ('11') AND p.status IN ('4', '5')))
you can write
WHERE ((b.status,p.status))
IN (('8','0')
,('8','1')
,('8','2')
,('8','7')
,('8','8')
,('5','3')
,('11','4')
,('11',53')
Which is imo much easier to read, maintain and checkable for completeness.
Furthermore: If the status fields are number columns then by all means compare them with numbers and not as strings.
3) Remove the order by condition
Is it faster without it? If yes, do you really need to order the output? -
Need help in improving the performance for the sql query
Thanks in advance for helping me.
I was trying to improve the performance of the below query. I tried the following methods used merge instead of update, used bulk collect / Forall update, used ordered hint, created a temp table and upadated the target table using the same. The methods which I used did not improve any performance. The data count which is updated in the target table is 2 million records and the target table has 15 million records.
Any suggestions or solutions for improving performance are appreciated
SQL query:
update targettable tt
set mnop = 'G',
where ( x,y,z ) in
select a.x, a.y,a.z
from table1 a
where (a.x, a.y,a.z) not in (
select b.x,b.y,b.z
from table2 b
where 'O' = b.defg
and mnop = 'P'
and hijkl = 'UVW';987981 wrote:
I was trying to improve the performance of the below query. I tried the following methods used merge instead of update, used bulk collect / Forall update, used ordered hint, created a temp table and upadated the target table using the same. The methods which I used did not improve any performance. And that meant what? Surely if you spend all that time and effort to try various approaches, it should mean something? Failures are as important teachers as successes. You need to learn from failures too. :-)
The data count which is updated in the target table is 2 million records and the target table has 15 million records.Tables have rows btw, not records. Database people tend to get upset when rows are called records, as records exist in files and a database is not a mere collection of records and files.
The failure to find a single faster method with the approaches you tried, points to that you do not know what the actual performance problem is. And without knowing the problem, you still went ahead, guns blazing.
The very first step in dealing with any software engineering problem, is to identify the problem. Seeing the symptoms (slow performance) is still a long way from problem identification.
Part of identifying the performance problem, is understanding the workload. Just what does the code task the database to do?
From your comments, it needs to find 2 million rows from 15 million rows. Change these rows. And then write 2 million rows back to disk.
That is not a small workload. Simple example. Let's say that the 2 million row find is 1ms/row and the 2 million row write is also 1ms/row. This means a 66 minute workload. Due to the number of rows, an increase in time/row either way, will potentially have 2 million fold impact.
So where is the performance problem? Time spend finding the 2 million rows (where other tables need to be read, indexes used, etc)? Time spend writing the 2 million rows (where triggers and indexes need to be fired and maintained)? Both? -
Improve PC Performance transcript of Meet the Experts online chat event
On June 1st, HP hosted an online chat event on improving PC performance. Below is a transcriptof that session.
Please note that I have altered the transcript so that follow up questions areincluded in the logical order.
I am in the process of planning the next chatevent. I would love to hear what topics would interest you, what day of theweek and time is best for you, and if you think an hour is too long.
So, if you get a minute, please let me know.
Here's the transcript:
SiobhanF-HP: Welcome!
SiobhanF-HP: If you want to ask a question, you must be a member of the HP Support Forums. If you want to join, go here https://passport2.hp.com/hppcf/createuser.do
SiobhanF-HP: Our team of experts is here and ready to tackle your toughest questions.
SiobhanF-HP: Bryan_N began tinkering with computers in the early 80s with the Atari 400. He has been at HP for almost 10 years and is focused on notebooks and Wireless Wide Area Networks (WWAN.)
SiobhanF-HP: RasterBlaster, aka Randy, also began his fascination with computers 30 years ago when he spent $550 for an Atari 400. He has been addicted to desktop computers ever since and has worked at HP for 16 years.
SiobhanF-HP: Mister Do, aka Kevin, has worked for HP for 11 years. He is a desktop guy and has been ripping PCs apart to see how they work and get better performance out of them for more than 20 years.
SiobhanF-HP: Sanchertx, aka Ralph, is another 20 year PC veteran. He has worked at HP for 15 years and focuses on improving notebook and network performance.
SiobhanF-HP: Huffer, aka Steve, is an attorney by day and a PC enthusiast by night. Although Steve does not work for HP, he is an avid member of the Support Forums. His forte is troubleshooting hardware and software issues, and he uses Linux as a personal operating system instead of Windows.
DexterM: Hello people. I believe that the main reason PC's slow down is because of files leftover after program uninstalls. Many programs leave behind files that store user settings and preferences of the programs even after "complete" uninstallation. Is there any way to completely remove them during uninstallation?
Bryan_N: To DexterM Hi Dexter, Some applications have specific removal tools to fully clean them out, such as the Norton Removal Tool. You can go to symantec.com and search for "Norton Removal Tool". There are also third party applications for cleaning out abandoned registry files, such as CrapCleaner which is what I have used personally. It can be found at ccleaner.com
nseidl33: Can I add more memory to my notebook? If I do, will it void the warranty?
Sanchertx: To nseidl33 hello Nseid133, no you will not void the warranty - you should make sure the specs match up if you buy memory from someone other than HP. That said, you may be required to remove the memory in the event there is a troubleshooting session with HP Support.
aarond22: Does adding more memory really make my PC run faster? If it does, how can I figure out how much memory to add and how hard is it to do?
RasterBlaster: To aarond22 While you use your computer, all software and drivers take up memory. Windows "places" the software and drivers into the hardware memory first because it is fastest. After it runs out of hardware memory it will eventually store the excess data on the hard drive which is much slower. So the amount of memory you have will speed up your computer, but how much speed depends on several factors. Generally, for Vista 64-bit, adding up to 4 GB has the biggest speed gains. Over 4 GB doesn't speed things up all that much unless you do things like video or large graphic editing - software that uses a lot of data. You can find memory upgrade information from the product specification or motherboard specification for your model of desktop PC. This HP support article should answer everything:
http://h10025.www1.hp.com/ewfrf/wc/document?docname=bph03886&cc=us&dlc=en&lc=en&jumpid=reg_R1002_USE....
animeowns: need a good gaming video card dx10 to play the newer games in hpa1720n
Huffer: To animeowns I am a big fan of the ATI HD 4800 series. It is DX10 compatible and very fast.
HPMAN10: I have a problem with my PC freezing up when I return from sleep mode. This just starting happening recently. Could it have anything to with installing Windows Vista Service Pack 2?
Huffer: To HPMAN10 Have you also added any new hardware? Sleep mode issues are often driver related. Also, some systems need to have their BIOS updated after installing Vista SP2.
HPMAN10: No I have not added new drivers. So you’re saying I should upgrade the BIOS. Isn't that a tricky to do? It could cause more problems.
Huffer: To HPMAN10 Yes, you should be careful with the BIOS upgrades but it should work well from Windows. Close all other programs and be patient with it.
HPMAN10: What about the freeze up in sleep mode? Do I need to update the BIOS for that problem too?
Huffer: To HPMAN10 Yes, there is a good chance it will help, and it cannot hurt to have the latest BIOS. Here is a good link for information: http://technet.microsoft.com/enus/library/dd335032(WS.10).aspx
Here is a good link to locate BIOS Updates for notebooks http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00042629&tmp_track_link=ot_faqs/top_issues/en_u...
Here is a good link to update the BIOS for desktops http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00007682&cc=us&lc=en&dlc=en HPMAN10: So I should update the BIOS from the HP download page?
Huffer: To HPMAN10 Yes, use the Windows-based BIOS updater. Turn off all other programs.
HPMAN10: If I have a problem with BIOS update can I do a system restore to revert back to original BIOS?
RasterBlaster: To HPMAN10 System Restore will not revert to a previous BIOS. System Restore is only for Windows - BIOS is a separate lower level function.
Huffer: To HPMAN10 BIOS is not part of the operating system, but you can flash back to an earlier version of the OS if needed. I really doubt you will have an issue. HPMAN10: I have a HP s3220n system and my Windows Media Center has a Tuner Not Installed message when I try to use live TV, I have tried everything from HP online support to Microsoft Help and nothing has solved the problem. Any suggestions?
RasterBlaster: To HPMAN10 s3220n comes with a tuner card. The no tuner found error can happen when some other TV capture software "checks out" the tuner. If you have a startup item, like webcam software that is set to hook into the Tuner card, you should go in and change the setting or remove it. Have you read this support document?http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01187871&cc=us&lc=en&dlc=en
HPMAN10: Yes I have read the HP document and tried the suggestions on it without success.
HPMAN10: I do not have a webcam.
HPMAN10: Also my PC Doctor software does not show tuner in the diagnostic program.
Mister_Do: To HPMAN10 If your tuner card is not showing up in PC Doctor, try opening the PC and reseating the tuner. If it still doesn't work, you possibly have a hardware failure.
HPMAN10: Yes I tried hardware and software recovery in HP Help and Tools. Same results NO TUNER INSTALLED.
RasterBlaster: To HPMAN10 Well, unless you did something major ... like upgrade your OS to Vista SP2... or something like that... I'd say your tuner hardware is gone. Especially if you did a system recovery. System recovery takes you back the original configuration
HPMAN10: I have removed the tuner card and reseated it without results in PC Doctor. I'll try it once more.
HPMAN10: Will a BIOS update also help the TV tuner problem?
HPMAN10: By the way I can watch programs I have recorded in the past in Media Center.
RasterBlaster: To HPMAN10 I don't think the BIOS update will help... here is the text from the site: M2N61-AR Motherboard BIOS update resolves issue with the computer shutting down and displaying message "ERROR: Unsupported CPU installed. PC will automatically shut down in a few seconds." Did you reinstall the driver from HP Help and Tools? There should at least be an unknown device in Device Manager. You older files that you are able to view are simply files that were created before you lost your tuner. “No Tuner Found” just means that Media Center cannot find the card because the card is "Check out" of the drivers are out of whack.
HPMAN10: I had tuner problem even before I installed SP2.
RasterBlaster: To HPMAN10 Well, if your tuner died and you could never get it to work after that, it might be a heat related failure. Tuners get hot... but usually, when a tuner gets too hot, you'll get some funny symptoms before it dies... like channel changing takes way too long -- to change up or down - or lots of frame skipping. IF it comes and goes - you have a software conflict problem.
amberdidi: Hi to you all, Why am I constantly receiving the following message and what can I do to correct it. "Windows cannot access the specified device, path or file. You may not have the appropriate permissions" Note: After I click Ok to this message it usually takes me to the page anyhow.
Bryan_N: To amberdidi Hi amberdidi, I'm not sure what OS you have, but this is a helpful document from Microsoft for XP: http://support.microsoft.com/?kbid=308421
amberdidi: About that message "Windows cannot access the specified device...." I am using Vista Home Edition 64 bit SP2.
Bryan_N: To amberdidi Ok, thanks for the clarification. It sounds like it is a security setting in Internet Explorer, try this please: http://support.microsoft.com/kb/959079
animeowns: Did you receive my other message?
Mister_Do: To animeowns Yes, we are working on it.
animeowns: I need a card that will fit in my computer case right now I’m using a 7900 and it’s a tight fit. Here are the specs for my motherboard http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00864946&lc=en&dlc=en&cc=us&os=2093&product=334...
animeowns: It must be about 7.8 x 3 x 4.4 inches – that’s the size of my 7900 gs, and it’s a tight fit. My motherboard is Micro-ATX: 9.6 in X 9.6 in. Please help. I want to upgrade to a nice card that will be able to play games like crysis fear 2 unreal tournament 3.
RasterBlaster: To animeowns Yeah, finding low-profile cards can be tricky. It sounds like you have the measurement. Searching the internet shopping sites for low-profile graphics cards should bring up some cards - then find one you like and work with the site to make sure it fits your measurement. HP can supply a replacement - but if it is not on HP shopping's site - you can go with other shopping sites.
animeowns: Will this video card fit in my system? http://www.newegg.com/Product/Product.aspx?Item=N82E16814127414
Mister_Do: To animeowns Sorry, I haven't tried that one personally, so I'm not sure. You'll need to make sure your current card dimensions match the new card.animeowns: Can someone please help me find a direct x 10 gaming card that will fit in my hp a1720n? The size has to be 7.8 x 3 x 4.4 inches or smaller that is the size of my pny 7900 gs and its a tight fit because the memory is real close.
RasterBlaster: To animeowns Huffer had to step out. The folks trying to help you in this chat session are from HP. We can't recommend a video card upgrade that did not already come with your PC - sorry You should post this same question into the forums under desktop PC and hardware (or video) category.
whitey: I have a ZD-7015us laptop and would like to know if the processor can be upgraded.
Huffer: To whitey I wouldn’t really recommended it because it is hard to know if it will overheat, but a Pentium 4 desktop processor will fit.
SiobhanF-HP: If you have specific product questions, the more information you give us the better we will be able to help you. Getting your exact model number; any error messages; what operating system version are you running; any recent hardware or software changes will go a long way to helping us answer your question.
amberdidi: I would like to know if NOD 32 antivirus is compatible with my Vista 64 bit. I am using Avast at the moment, but I am really interested in NOD32 or a good quality antivirus you can recommend for 64 bit. Thank you.
Huffer: To amberdidi I use Avast or AVG on Vista 64 bit systems and either works well. I have only used NOD32 on 32 bit systems. The NOD32 website will answer this question definitively.
amberdidi: Back to the freezing problem with my Vista 64 bit. I downloaded only the final version of SP2 but I have updated most of my drivers including the latest NVIDIA driver from their site. Should I also update my BIOS?
Sanchertx: To amberdidi Yes, update the BIOS.
DexterM: Other than unchecking Startup Programs from MS Configuration Utility, is there any other way to speed up startup time of a Windows PC?
RasterBlaster: To DexterM There are lots of methods. If you have Vista - go in and shut down aero, if you don't need it, make sure your temp files are cleared, etc... Here is a support document:http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00815926&cc=us&lc=en&dlc=en
XP: http://h10025.www1.hp.com/ewfrf/wc/document?docname=bph06569&cc=us&lc=en&dlc=en
Blondechica: I just bought a HP HDX16 and I am embarrassed to say I do not how to find the On button. I am using my friend’s computer and told him that I had a different problem with my computer and gave this site. Also, when I do get it turned on will it be blank. Do have to buy software? I hope this is not the first time someone has asked this question. This is all new to me. Thank you for your help.
Sanchertx: To Blondechica Hello, please hit the power button on the top left of the keyboard cover. This will illuminate to a blue color to show the unit is on. You must let the unit create the image. This means you will let it run on its own until you see the Welcome screen. The unit comes with the Vista operating system and has HP applications. It also comes with trial versions of Norton antivirus and MS Office.
Petedog11: I have the HP Pavilion a6745f Desktop PC and would like to upgrade my graphics card. I like to run high-end flight simulators. What graphics card do you recommend? Will I need to upgrade my power supply unit also? Is there a way to disable the on board graphics card that came with the computer once I install a new graphics card? Thank you.
Huffer: To Petedog11 A new power supply should not be needed. When you plug in a new video card it will automatically disable the onboard. Just be sure you have a pci-e poer connector (6 pin)
Petedog11: The power supply unit that is in my HP Pavilion a6745f Desktop PC is 300 watts I believe. My understanding is that the newer Radeon's etc...need more power. Will you please answer the remainder of my original question.....I like to run high-end flight simulators. What graphics card do you recommend? Thanks!
Huffer: To Petedog11 300 watts is a bit light. I would look for around a 500 watt psu.
mlk3742: I have a dv9000 laptop, it has 4 gigs of ram. I run Photoshop CS4. Is there any way to increase processing speed?
Sanchertx: To mlk3742 While there isn’t a switch you can turn on to make the processor run faster, you can do things like remove un-needed software and remove items from startup. Also disabling HP Advisor helps. Here is a good reference -
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00816938&lc=en&dlc=en&cc=us&lang=en&rule=13847&...
amberdidi: Since I downloaded SP2 on my Vista Home Edition I also am freezing up every so often to the point that I have to use Task Manager to end it and start over again. I have an HP Elite with 1000GB hard drive and 8192MB memory. What can I do? Thank you.
Bryan_N: To amberdidi If you downloaded the beta version of SP2 you might want to uninstall it and download the final version. If you downloaded the final version and this started with SP2, you can check the Problem Reports and Solutions feature of Vista. Just click the Start button, and type: Problem Reports, then click on the application
scribblesteve: Besides the usual cleaning up Temp files and using Disk Clean up or Defrag, how can I prevent my computer from running sluggishly? I want it to run as fast and as smooth as it did the first time I turned it on?
Mister_Do: To scribblesteve Removing startup items or keeping programs from running in the background helps a lot. And depending on what operating system you have there are multiple settings you can change to improve performance. Here are two HP support documents that list multiple ways to improve your PC performance: For XP: http://h10025.www1.hp.com/ewfrf/wc/document?docname=bph06569&cc=us&dlc=en&lc=en&jumpid=reg_R1002_USE...
For Vista: http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00815926&cc=us&dlc=en&lc=en&jumpid=reg_R1002_US...
bjm: I have a Compaq Presario A931NR Notebook BIOS F.32 Software Driver download site displays F.34 I don't know if I should Update to F.34 because F.32 is not listed as a previous version, and I don't know if I can go from F.32 to F,34 without F.33
Huffer: To bjm No problem. You can easily skip a level of BIOS update and go right to 3.4.
bjm: Need to know if I should update my BIOS
Huffer: To bjm The update will work, but I really need to know what your problem is to assess whether the BIOS update is necessary.
bjm: HP Updates report no available Updates so how do I know if I need Update other than what is presented on Software Driver download page
Mister_Do: To bjm If HP Update says you don't have any new updates, then your PC is up to date with the latest drivers. If you by chance see a software or driver file on you product support page, and it's newer than what you have. You can install it, but if your PC is running fine, you may not want to bother.
bjm: Huffer asked why is BIOS update necessary. I would ask why does Software Update site show an Update if it's not necessary? HP Update is not working to report BIOS updates. 13 months and no Updates ever. So, all I have to go by is Software Update site which report newer BIOS with Enhancements to Security. Why would Total Care Advisor, HP Health Check and HP Update not have even one Update or info after 13 months of service?
RasterBlaster: To bjm The software BIOS update page on hp.com/customercare should tell you what the BIOS update fixes or improves. If your system is running well or the BIOS update page does not list a fix for your problem - don't update the BIOS. That's my opinion anyway. BIOS updates do introduce a level of risk. For example if you have a power outage while updating the BIOS, the PC will require service. So ... if in doubt, don't do it unless you know it resolves an issue.
bjm: The BIOS Update to F.34 is stated as having Security Enhancements. Does the System Info refresh with a BIOS update or is System Info static
Mister_Do: To bjm Where are you viewing the System Info? From the BIOS itself, from "Properties" under "Computer", etc.? Here’s good document on Locating HP Software, Driver and BIOS Updates:
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00042629&tmp_track_link=ot_faqs/top_issues/en_u...
puter_student: I sent my hp Mini 1000 (Win XP) into service about two weeks ago. I gave a lady friend a 1120NR (Mi on Linux) yesterday. As she is a geographic distance, and using a different OS, how would you suggest I assist her by telephone. And, once she establishes solid Internet access, is it best to send her e-mail or instant messages?
Bryan_N: To puter_student Hi Puter_student, you have several choices since HPMI supports MSN messenger and other chat programs via the "pidgeon" application, and it also comes preinstalled with Skype. You can install either of those on your XP unit. Skype also allows you to use a webcam at the same time.
puter_student: Sorry, I stated my question badly. I did not mean to ask about the communications technology. I meant the information resources available online -- to both her and me -- WRT setup, configuration (if needed), etc. The realization came to me earlier today that I cannot "walk" her thru it by simply telling her what I see on my own machine as I take certain actions [other, of course, than accessing appropriate documents about her model]. Can you point me in the right direction to those resource documents?
Bryan_N: To puter_student For support documents you can start here:
http://h10025.www1.hp.com/ewfrf/wc/product?product=3860346&lc=en&cc=us&dlc=en&lang=en&cc=us
puter_student: I clicked the link you supplied. Doing so took me out of this chat, but did not get me where you were trying to send me. Now, when I return to the chat, I no longer have the earlier session history. When will it be posted, and where can I find the whole chat session later?
Bryan_N: To puter_student The transcript will be posted on the boards within 48 hours after this event. I got to the link by going to hp.com, and searching for support on "mini 1110nr" http://h10025.www1.hp.com/ewfrf/wc/product?product=3860346&lc=en&cc=us&dlc=en&lang=en&cc=us
The MI desktop is based on Ubuntu, and you can also find lots of general Ubuntu information on external forums Certain applications have support externally as well, such as the Firefox browser.
mlk3742: to Sanchertx: Can I swap out or replace the graphics card to speed up graphic intensive demands such as Photoshop?
Sanchertx: To mlk3742 Hello - not with our notebooks. They are either attached to system board or a daughter board, which is then attached to the system board.mlk3742: to Sanchertx: So there is no way from a hardware approach to increase speed? The only time I notice my lap slows down is processing large files, i.e. photos, or while performing image edits in Photoshop. After increasing RAM, everything else has speeded up noticeably. My laptop has more than half the hard drive space free.
Sanchertx: To mlk3742 Hardware wise you can get a faster hard drive - example move from a 5400 rpm to 7200 RPM - Also make sure you have the latest BIOS update. These usually have maintenance modifications to resolve potential problems and tweak the hardware.mlk3742: to Sanchertx: How and or where do I get a BIOS upgrade? Do you have a recommendation for which hard drive to get? Will any aftermarket drive fit in my laptop?
Sanchertx: To mlk3742 Hello – this document Locating HP Software, Driver and BIOS Updates should help http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00042629&tmp_track_link=ot_faqs/top_issues/en_u... I cannot recommend a 3rd party - aftermarket drive - but there are many available. A good place to look is notebookforum.com.
scribblesteve: My battery is fine, but the HP Battery check doesn't recognize it. I have the most updated versions of BIOS, Help and Support and sp41862, and it still doesn't recognize it. I'm running Vista32bit on an HP pavilion dv6704nr. What else can I try to check and prolong the life of my battery?
Bryan_N: To scribblesteve Hi scribblesteve, ensure the battery is charged and the AC adaptor is plugged in when testing. If that doesn't work, you can do some basic battery life steps. These are found at http://h20239.www2.hp.com/techcenter/battery/Battery_max.htm and also at http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00821429&cc=us&dlc=en&lc=en&jumpid=reg_R1002_US...
DexterM: What tweaks do you guys usually do on your Windows PC's to ensure optimal PC performance?
Bryan_N: To DexterM Hi DexterM, I uninstall any applications I don't use, run Microsoft and HP updates, keep a good antivirus installed, and also I personally use a third party application called ccleaner. I back up my unit in full every month as well just in case.
amdkenworth: Hi I have an HP that has a on board video card and it won’t show any video when its turned on???
RasterBlaster: To amdkenworth First thing you should do is try connecting another monitor to see if it is related to the monitor or the video on the motherboard. Here is document that you should check out: http://h10025.www1.hp.com/ewfrf/wc/document?docname=bph04760&lc=en&dlc=en&cc=us&lang=en&rule=3950&pr...
jest1: My notebook has a short battery life. Is there something I can do?
Sanchertx: To jest1 A: There are several things you can do to extend battery life such as changing your power plan, calibrating your battery to increase capacity, or shutting off unused features in the OS. Here is an excellent document on notebook battery usage that will walk you through your options step by step http://tinyurl.com/57x38x
Dominick_7: Hi I have an HDX 9000t and was wondering if anyone knew if/how I could upgrade the graphics card, to say an MXM GPU?
Bryan_N: To Dominick_7 Hi Dominick_7, there isn't a way to upgrade the video card itself. You can ensure you have the latest drivers by visiting hp.com and checking drivers, and keep your overall system optimized with standard PC Tune up steps such as this document: c00034290 - HP Notebook PCs - Improving the Performance of Your Notebook PC
Dominick_7: From what I understand, an HP tech told me MXM has on board BIOS which doesn’t depend on the BIOS from the motherboard. What leads you to say it can’t be done?
Bryan_N: To Dominick_7 The video card is separate, but not replaceable as it is directly attached to the system board
Dominick_7: Can't the same be said about the processor? Yet I know people who have updated their processors, and GPUs when they upgrade them from an ATI to the 8800M GTS NVIDIA GPU? If you could please elaborate in a more detailed fashion as to what the obstacles are I'd appreciate it. Is that the ONLY reason why you say it can't be done? Because it’s directly connected to the motherboard? If that was insurmountable wouldn't that make it impossible to upgrade the ATI GPU in lower specd HDXs to the 8800 NVI...
Bryan_N: To Dominick_7 The CPU is not soldered onto the system board, so it is replaceable. The GPU/Graphics card is soldered onto the system board and is not replaceable.
SSPatrick: HP Total Care Advisor is giving me warnings - How do I clear these up?
Sanchertx: To SSPatrick Click on the PC Update button inside of Advisor to check for and run updates. After you run all the necessary updates, you should click on Health Check to scan your computer to remove the warnings. Here is a good document on the ins and outs of Total Care Advisor. http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01599730&cc=us&dlc=en&lc=en&jumpid=reg_R1002_US...
Petedog11: I have the HP Pavilion a6745f Desktop PC. Media Center came pre-installed with the computer. Do I have a Tuner card installed?
Mister_Do: To Petedog11 Hi Petedog11, It doesn't look like you have a TV Tuner installed. Here is your product spec for reference: http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01625611&cc=us&lc=en&dlc=en&product=3870515
laurensw: I installed antivirus software and now my PC is running really slow - what should I do?
Bryan_N: To laurensw Hi Laurensw, It often helps to ensure the original antivirus software was fully removed. One possible solution is to use the Norton Removal Tool to completely remove the trial version of Norton that shipped with your PC.
rdewing: My PC is about a year old and it is getting slower and slower. Do I have a virus? Is there something that I can do to make run faster?
Mister_Do: To rdewing It is tough to say why your PC is running slowly, but there are some things you can do that may help its performance. Check out this web site for step by step instructions on basic PC care. http://h20239.www2.hp.com/techcenter/pctuneup/ HP also offers free online classes to teach you how to tune up your XP or Vista PC. Check it out http://tinyurl.com/lj86yt
scribblesteve: I'm having a graphics problem where I cannot see images. I have only seen it with the HP Help and Support and the Installation of Adobe Web Premium Installation. I have no Idea how to fix this, and neither does anyone in the multiple Support Forums I've posted the problem in. Here are some screenshots: http://www.stevedolan.com/shared/graphicsproblem.jpg | http://www.stevedolan.com/shared/graphicsproblem2.jpg
Bryan_N: To scribblesteve This one looks like something I cannot answer before the event terminates. Can you start a thread on this on the customer forums here and we can continue? If you already have, can you send me the link and I can subscribe to it?
scribblesteve: Bryan_N: Here is that link: http://h30434.www3.hp.com/psg/board/message?board.id=Display&message.id=1715#M1715
Bryan_N: To scribblesteve Thanks scribblesteve
SiobhanF-HP: We are nearing the end of our chat session. We only have time for 3 more questions. If we did not get to your question, please post it on the Notebook and Desktop boards.
jest1: It takes my PC a pretty long time to boot. Any recommendations?
Mister_Do: To jest1 The first two things I would consider doing would be to 1) add more memory to your PC (unless you already have max memory), and 2) I would change my Startup program and process settings. Here are a few HP Support documents that explain how to prevent unnecessary programs from running at startup: For Vista: http://h10025.www1.hp.com/ewfrf/wc/document?lc=en&dlc=en&cc=us&docname=c00813419 For Vista: http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00819747&cc=us&lc=en&dlc=en For XP: http://h10025.www1.hp.com/ewfrf/wc/document?docname=bph07149&cc=us&lc=en&dlc=en
SiobhanF-HP: We only have time for one more question. If we did not get to your question, please post it on the Notebook or Desktop boards.
jest1: I think I have a notebook battery that was part of a recent recall, what do I do about this?
Mister_Do: To jest1 Visit the HP Notebook PC Battery Pack Replacement Program Web site at: http://www.hp.com/support/BatteryReplacement for additional information and to determine if your battery is part of the program.
jest1: How can I find out the maximum amount of memory my system can accept?
Mister_Do: To jest1 HP has product specifications for your PC on its web site. Go to www.HP.com and click on Software Driver and enter your exact PC model name. You must give the specific model number, ex dv9009nr, and not the series number, ex dv9000. Click on the document that references Product Specifications at the top of the list of articles. You will get a detailed breakdown of your system including microprocessor, graphics card, and the maximum amount of memory you can load onto your PC.
SiobhanF-HP: We are ending the chat event. Thank you for coming. We hope you found it worthwhile. I will be posting a transcript of the event in announcement section at the top of the Notebook and Desktop boards. Please feel free to continue these conversations on the Forums.
SiobhanF-HP: We will be hosting future Meet the Experts chat sessions on a variety of topics, so please tell us what you thought of the event and how it could be improved.
Message Edited by timhsu on 06-02-2009 05:28 PM
I work for HP, supporting the HP Experts who volunteer their time and technical knowledge to help others.hello sir,
i want to your help
i was installed fresh windows 7 via cd rom and then after installed all software.
and now after 1 day customer complained me that cd rom not read any cd and i m also check when i insurt cd so its not read and when i am double click on cd rom icon its eject so what i do for that please reply on my email address.
[text removed for privacy]
VIMAL -
Re: How to Improve the performance on Rollup of Aggregates for PCA Infocube
Hi BW Guru's,
I have unresolved issue and our team is still working on it.
I have already posted several questions on this but not clear on how to reduce the time on Rollup of Aggregates process.
I have requested for OSS note and searching myself but still could not found.
Finally i have executed one of the cube in RSRV with the database selection
"Database indexes of an InfoCube and its aggregates" and got warning messages i was tried to correct the error and executed once again but still i found warning message. and the error message are as follows: (this is only for one info cube we got 6 info cubes i am executing one by one).
ORACLE: Index /BI0/IACCOUNT~0 has possibly degenerated
ORACLE: Index /BI0/IPROFIT_CTR~0 has possibly degenerated
ORACLE: Index /BI0/SREQUID~0 has possibly degenerated
ORACLE: Index /BIC/D1001072~010 has possibly degenerated
ORACLE: Index /BIC/D1001132~010 has possibly degenerated
ORACLE: Index /BIC/D1001212~010 has possibly degenerated
ORACLE: Index /BIC/DGPCOGC062~01 has possibly degenerated
ORACLE: Index /BIC/IGGRA_CODE~0 has possibly degenerated
ORACLE: Index /BIC/QGMAPGP1~0 has possibly degenerated
ORACLE: Index /BIC/QGMAPPC2~0 has possibly degenerated
ORACLE: Index /BIC/SGMAPGP1~0 has possibly degenerated
i don't know how to move further on this can any one tell me how to tackle this problem to increase the performance on Rollup of Aggregates (PCA Info cubes).
every time i use to create index and statistics regularly to improve the performance it will work for couple of days and again the performance of the rollup of aggregates come down gradually.
Thanks and Regards,
Venkathi,
check in a sql client the sql created by Bi and the query that you use directy from your physical layer...
The time between these 2 must be 2-3 seconds,otherwise you have problems.(these seconds are for scripts that needed by Bi)
If you use "like" in your sql then forget indexes....
For more informations about indexes check google or your Dba .
Last, i mentioned that materialize view is not perfect,it help a lot..so why not try to split it to smaller ones....
ex...
logiacal dimensions
year-half-day
company-department
fact
quantity
instead of making one...make 3,
year - department - quantity
half - department - quantity
day - department - quantity
and add them as datasource and assign them the appropriate logical level at bussiness layer in administrator...
Do you use partioning functionality???
i hope i helped....
http://greekoraclebi.blogspot.com/
/////////////////////////////////////// -
Help to improve the performance of a procedure.
Hello everybody,
First to introduce myself. My name is Ivan and I recently started learning SQL and PL/SQL. So don't go hard on me. :)
Now let's jump to the problem. What we have there is a table (big one, but we'll need only a few fields) with some information about calls. It is called table1. There is also another one, absolutely the same structure, which is empty and we have to transfer the records from the first one.
The shorter calls (less than 30 minutes) have segmentID = 'C1'.
The longer calls (more than 30 minutes) are recorded as more than one record (1 for every 30 minutes). The first record (first 30 minutes of the call) has segmentID = 'C21'. It is the first so we have only one of these for every different call. Then we have the next (middle) parts of the call, which have segmentID = 'C22'. We can have more than 1 middle part and again the maximum minutes in each is 30 minutes. Then we have the last part (again max 30 minutes) with segmentID = 'C23'. As with the first one we can have only one last part.
So far, so good. Now we need to insert these call records into the second table. The C1 are easy - one record = one call. But the partial ones we need to combine so they become one whole call. This means that we have to take one of the first parts (C21), find if there is a middle part (C22) with the same calling/called numbers and with 30 minutes difference in date/time, then search again if there is another C22 and so on. And last we have to search for the last part of the call (C23). In the course of these searches we sum the duration of each part so we can have the duration of the whole call at the end. Then we are ready to insert it in the new table as a single record, just with new duration.
But here comes the problem with my code... The table has A LOT of records and this solution, despite the fact that it works (at least in the tests I've made so far), it's REALLY slow.
As I said I'm new to PL/SQL and I know that this solution is really newbish, but I can't find another way of doing this.
So I decided to come here and ask you for some tips on how to improve the performance of this.
I think you are getting confused already, so I'm just going to put some comments in the code.
I know it's not a procedure as it stands now, but it will be once I create a better code. I don't think it matters for now.
DECLARE
CURSOR cur_c21 IS
select * from table1
where segmentID = 'C21'
order by start_date_of_call; // in start_date_of_call is located the beginning of a specific part of the call. It's date format.
CURSOR cur_c22 IS
select * from table1
where segmentID = 'C22'
order by start_date_of_call;
CURSOR cur_c22_2 IS
select * from table1
where segmentID = 'C22'
order by start_date_of_call;
cursor cur_c23 is
select * from table1
where segmentID = 'C23'
order by start_date_of_call;
v_temp_rec_c22 cur_c22%ROWTYPE;
v_dur table1.duration%TYPE; // using this for storage of the duration of the call. It's number.
BEGIN
insert into table2
select * from table1 where segmentID = 'C1'; // inserting the calls which are less than 30 minutes long
-- and here starts the mess
FOR rec_c21 IN cur_c21 LOOP // taking the first part of the call
v_dur := rec_c21.duration; // recording it's duration
FOR rec_c22 IN cur_c22 LOOP // starting to check if there is a middle part for the call
IF rec_c22.callingnumber = rec_c21.callingnumber AND rec_c22.callednumber = rec_c21.callednumber AND
(rec_c22.start_date_of_call - rec_c21.start_date_of_call) = (1/48)
/* if the numbers are the same and the date difference is 30 minutes then we have a middle part and we start searching for the next middle. */
THEN
v_dur := v_dur + rec_c22.duration; // updating the new duration
v_temp_rec_c22:=rec_c22; // recording the current record in another variable because I use it for the next check
FOR rec_c22_2 in cur_c22_2 LOOP
IF rec_c22_2.callingnumber = v_temp_rec_c22.callingnumber AND rec_c22_2.callednumber = v_temp_rec_c22.callednumber AND
(rec_c22_2.start_date_of_call - v_temp_rec_c22.start_date_of_call) = (1/48)
/* logic is the same as before but comparing with the last value in v_temp...
And because the data in the cursors is ordered by date in ascending order it's easy to search for another middle parts. */
THEN
v_dur:=v_dur + rec_c22_2.duration;
v_temp_rec_c22:=rec_c22_2;
END IF;
END LOOP;
END IF;
EXIT WHEN rec_c22.callingnumber = rec_c21.callingnumber AND rec_c22.callednumber = rec_c21.callednumber AND
(rec_c22.start_date_of_call - rec_c21.start_date_of_call) = (1/48);
/* exiting the loop if we have at least one middle part.
(I couldn't find if there is a way to write this more clean, like exit when (the above if is true) */
END LOOP;
FOR rec_c23 IN cur_c23 LOOP
IF (rec_c23.callingnumber = rec_c21.callingnumber AND rec_c23.callednumber = rec_c21.callednumber AND
(rec_c23.start_date_of_call - rec_c21.start_date_of_call) = (1/48)) OR v_dur != rec_c21.duration
/* we should always have one last part, so we need this check.
If we don't have the "v_dur != rec_c21.duration" part it will execute the code inside only if we don't have middle parts
(yes we can have these situations in calls longer than 30 and less than 60 minutes). */
THEN
v_dur:=v_dur + rec_c23.duration;
rec_c21.duration:=v_dur; // updating the duration
rec_c21.segmentID :='C1';
INSERT INTO table2 VALUES rec_c21; // inserting the whole call in table2
END IF;
EXIT WHEN (rec_c23.callingnumber = rec_c21.callingnumber AND rec_c23.callednumber = rec_c21.callednumber AND
(rec_c23.start_date_of_call - rec_c21.start_date_of_call) = (1/48)) OR v_dur != rec_c21.duration;
// exit the loop when the last part has been found.
END LOOP;
END LOOP;
END;I'm using Oracle 11g and version 1.5.5 of SQL Developer.
It's my first post here so hope this is the right sub-forum.
I tried to explain everything as deep as possible (sorry if it's too long) and I kinda think that the code got somehow hard to read with all these comments. If you want I can remove them.
I know I'm still missing a lot of knowledge so every help is really appreciated.
Thank you very much in advance!Atiel wrote:
Thanks for the suggestion but the thing is that segmentID must stay the same for all. The data in this field is just to tell us if this is a record of complete call (C1) or a partial record of a call(C21, C22, C23). So in table2 as every record will be a complete call the segmentID must be C1 for all.Well that's not a problem. You just hard code 'C1' instead of applying the row number as I was doing:
SQL> ed
Wrote file afiedt.buf
1 select 'C1' as segmentid
2 ,start_date_of_call, duration, callingnumber, callednumber
3 from (
4 select distinct
5 min(start_date_of_call) over (partition by callingnumber, callednumber) as start_date_of_call
6 ,sum(duration) over (partition by callingnumber, callednumber) as duration
7 ,callingnumber
8 ,callednumber
9 from table1
10* )
SQL> /
SEGMENTID START_DATE_OF_CALL DURATION CALLINGNUMBER CALLEDNUMBER
C1 11-MAY-2012 12:13:10 8020557824 1982032041 0631432831624
C1 15-MAR-2012 09:07:26 269352960 5581790386 0113496771567
C1 31-JUL-2012 23:20:23 134676480 4799842978 0813391427349
Another thing is that, as I said above, the actual table has 120 fields. Do I have to list them all manually if I use something similar?If that's what you need, then yes you would have to list them. You only get data if you tell it you want it. ;)
Of course if you are taking the start_date_of_call, callingnumber and callednumber as the 'key' to the record, then you could join the results of the above back to the original table1 and pull out the rest of the columns that way...
SQL> select * from table1;
SEGMENTID START_DATE_OF_CALL DURATION CALLINGNUMBER CALLEDNUMBER COL1 COL2 COL3
C1 31-JUL-2012 23:20:23 134676480 4799842978 0813391427349 556 40 5.32
C21 15-MAR-2012 09:07:26 134676480 5581790386 0113496771567 219 100 10.16
C23 11-MAY-2012 09:37:26 134676480 5581790386 0113496771567 321 73 2.71
C21 11-MAY-2012 12:13:10 3892379648 1982032041 0631432831624 959 80 2.87
C22 11-MAY-2012 12:43:10 3892379648 1982032041 0631432831624 375 57 8.91
C22 11-MAY-2012 13:13:10 117899264 1982032041 0631432831624 778 27 1.42
C23 11-MAY-2012 13:43:10 117899264 1982032041 0631432831624 308 97 3.26
7 rows selected.
SQL> ed
Wrote file afiedt.buf
1 with t2 as (
2 select 'C1' as segmentid
3 ,start_date_of_call, duration, callingnumber, callednumber
4 from (
5 select distinct
6 min(start_date_of_call) over (partition by callingnumber, callednumber) as start_date_of_call
7 ,sum(duration) over (partition by callingnumber, callednumber) as duration
8 ,callingnumber
9 ,callednumber
10 from table1
11 )
12 )
13 --
14 select t2.segmentid, t2.start_date_of_call, t2.duration, t2.callingnumber, t2.callednumber
15 ,t1.col1, t1.col2, t1.col3
16 from t2
17 join table1 t1 on ( t1.start_date_of_call = t2.start_date_of_call
18 and t1.callingnumber = t2.callingnumber
19 and t1.callednumber = t2.callednumber
20* )
SQL> /
SEGMENTID START_DATE_OF_CALL DURATION CALLINGNUMBER CALLEDNUMBER COL1 COL2 COL3
C1 11-MAY-2012 12:13:10 8020557824 1982032041 0631432831624 959 80 2.87
C1 15-MAR-2012 09:07:26 269352960 5581790386 0113496771567 219 100 10.16
C1 31-JUL-2012 23:20:23 134676480 4799842978 0813391427349 556 40 5.32
SQL>Of course this is pulling back the additional columns for the record that matches the start_date_of_call for that calling/called number pair, so if the values differed from row to row within the calling/called number pair you may need to aggregate those (take the minimum/maximum etc. as required) as part of the first query. If the values are known to be the same across all records in the group then you can just pick them up from the join to the original table as I coded in the above example (only in my example the data was different across all rows). -
How to Improve the performance in Variable Selection Screen.
Hi,
In Query Level we have Variable " User entry Defalt Valu". User want select particular value when he press "F4" it's take hours time how to improve the performance in Varaible Selection Screen.
Thanks in Advance.
Regards,
Venkat.Dear Venkat.
You please try the following steps:
1. Say the InfoObject is 0EMPLOYEE against which you have created the variable, which user is trying to select value against, when they execute the report.
2. Goto RSA1-> InfoObject tab-> Select InfoObject 0EMPLOYEE.
3. Selcet the following options:
Query Execution Filter Val. Selectn - 'Only Posted Value for Navigation'
Filter Value Repr. At Query Exec. - 'Selector Box Without Values'
Please let me know if there is any more issue. Feel free to raise further concern
Thnx,
Sukdev K -
How to improve the performance of policy import process
Hello OES 10g Experts,
I have an application specific policy XML of OES 10g. While importing it to OES using policyIX.sh command, the process is taking around 3.5 hrs in DEV servers. The policy XML size is around 2 MB. However there are other applications which are being imported in less than 30 mins.
Perhaps it is due to the size of the XML, the policy import process is taking huge time which may not be viable in production systems. But I would like to know if there is a way to improve the performance of import process. The command syntax I am using is
./policyIX.sh -import -disableTransaction config.xml policy.xml
I have tried removing the parameter -disableTransaction but there is no performance improvement.
Appreciate any inputs.
Thanks
Mahendra.Go through following link:-
http://docs.oracle.com/cd/E21764_01/doc.1111/e14316/org_mangmnt.htm#OMUSG2741 -
How to improve the performance of insert statement.
Hi All,
I have one procedure and it inserts 40 million records into one table. As my current method taking long time to accomplish the task, Is there any mechanism to improve the performance
Thanks in Advance.> Thanks for pointing out my mistake Billy :)
It is a common misconception it seems - that Oracle PQ is only useful for multi CPU platforms. I have seen it mentioned numerous times since the Oracle 7 OPS days in the mid 90's.
> Edit: Could you please highlight which operations
benefit from a multi-cpu machine?
More CPUs increase the CPU capacity of the platform (and not speed). Allows it to run more processes.
So very simplistically - on a single CPU box you find only sufficient CPU capacity (free CPU time) to run a parallel degree of 2 (i.e. 2 PQs). On a 4 CPU box, you may sufficient capacity for a degree of 10.
But there are some catches here.
Oracle PQ is specifically used for I/O sharing. Instead of a single process doing all the I/O, the I/O is shared amongst a bunch of PQ processes.
The real bottle neck here is actually the size of the pipe to the disk.
Simple example: You may have sufficient CPU capacity to run 20 PQs. But the I/O pipe will be seriously hammered as the pipe can only do a 1000 IOs/sec, and these 20 PQs are trying to push 10,000 IOs/sec.
Another catch is that there are overheads when using SMP (symetrical multi processing). Again, very basically: as only a single CPU can for example access a specific piece of memory, two processes running on two different CPUs can cause "contention" when trying to access this memory (e.g. a typical piece of shared memory).
So having two related processes running on two different CPUs can be in fact slower than having both related processes running on the same CPU.
This is quite noticeable on Windows NT/2000/XP kernel for example. Windows will load the 1st CPU close to capacity, before spilling across to the 2nd CPU. It is the norm to see the 1st CPU with high usage and the 2nd CPU running almost idle. (something that seems to have PC gamers confused in recent times when using "high-end" dual core machines and not understanding why the 2nd CPU does not seem to be used)
Bottom line. Multi-CPU platforms provide more processing capacity for running PQ than a single CPU platform. But a single CPU is capable of running PQ if there is capacity (which is often the case). -
Worse gaming performance than Kubuntu 12.10?
Title.
I'm using KDE 4.10 (installed kdebase package), Pulse, nVidia propietary drivers with VSync disabled, same programs than on Kubuntu, compositing manually suspended, yet performance is worse on TF2 and Serious Sam 3: BFE. FPS is high... enough, but the games stutter every few seconds, making them extremely annoying to play.
Any ideas why this happens?
And no, nothing strange on the console output.
Not using a low latency kernel on Kubuntu, nor will I use one on Arch. Plus, according to Phoronix benchmarks, those usually reduce gaming performance.
Thanks in advance for any help.frank604 wrote:
Have you compared processes/services between arch and kubuntu? Could you monitor cpu for spikes and see if any background processes is causing the stutter?
when you say nothing useful is output to console do you mean you are running 'steam' command in terminal and watching the output there?
Any cpu frequency scaling?
Double check the archwiki at https://wiki.archlinux.org/index.php/Ga … g_policies
Special highlight to core affinity and schedule daemon/policy.
Sorry I'm not much help, just doing some "what ifs" with you.
Compared to my laptops' Kubuntu 12.10 (I don't have Kubuntu installed anymore on my main machine) the only extra thing I had was Akonadi since I forgot to disable it. Disabled everything, file indexing, plus a couple of stuff I found I didn't need. No change in performance.
Yup, running steam into terminal. Games launched by steam output on there too.
CPU's not scaling, it's a regular Phenom II X2 on a desktop and nothing's wrong on BIOS.
I did not need to do any scheduling on Kubuntu for the game to run. I am not aware of Kubuntu using some sort of daemon that does that automatically, if there is, I'll install it, but ferk no I will not mess with it for every game I want to play. This is a global issue, plus I've tried running TF2 with multiple multithreading settings and that didn't do anything (plus on Kubuntu I had it set up to use my cores on the most efficient way, and I'm on the same settings on Arch).
Thanks. -
Is there a way to improve the performance of a report group?
Hi gurus,
Is there a way to improve the performance of a report group?
Points will be given later....
Thanks!Hi there,
Thank you for your response. I thought there's no answer for this issue and planning to change it to ALV.
I looked at the codes and debugged it. After the select statement from ZZUWT table (customized), there's a loop that takes much time (10-12mins) for 1000 records. and several nested perform routines. It's a standard program so I'm hesitant to edit it.
I'll be checking on the primary keys. If it's ok, may I ask for your assistance in this part? Though I'm not that familiar and haven't tried creating a report painter before.
Thanks anyway...:D -
The problem with the gaming performance
i am usin hp 15-g206ax notebook and it have a quadcore processor and 4gb ram and a 2gb graphic card but its gaming performance is not good Please tell me what i can do for improving the gaming performance
There is not much to be done. You have the AMD HD 8570M graphics with dedicated video memory. That is in the lower middle of the spectrum as far as gaming is concerned. Way better than most laptops but way less powerful than a true gaming machine. Just keep the drivers current is about all. Turn down visual effects. There is no upgrade possible for the hardware.
-
Improve the Performance of Loops
Has anyone read "Improve the Performance of Loops" on http://archive.devx.com/free/tips/tipview.asp?content_id=3945 ?
If so, would you agree that what's written there is absolute b.....t?
He claims that decreasing the counter improves the performance and tries to prove it with the program:
for (int i=0,n=Integer.MAX_VALUE;i<n;i++){
a =-a;
// is slower than
long midTime =System.currentTimeMillis();
for (int i=Integer.MAX_VALUE-1 ; i>=0 ; i--){
a =-a;
}The result is pretty impressive:
Increasing Loop:4891
Decreasing Loop:3781
The only stupid thing is that:
1. if you run it more times you get
Increasing Loop:4891
Decreasing Loop:3781
Increasing Loop:3782
Decreasing Loop:3796
Increasing Loop:3891
Decreasing Loop:3891
Increasing Loop:3828
Decreasing Loop:3937
Increasing Loop:3891
Decreasing Loop:3906
Increasing Loop:3860
Decreasing Loop:3937
Increasing Loop:3891
Decreasing Loop:3906
So you can see that the performance is worse for decreasing loops after hotspot warmed up.
2. If you run it with -server, you'll even get:
Increasing Loop:16
Decreasing Loop:0
Increasing Loop:0
Decreasing Loop:0
Increasing Loop:0
Decreasing Loop:0
Increasing Loop:0
Decreasing Loop:0
Increasing Loop:0
Decreasing Loop:0
Increasing Loop:0
Decreasing Loop:0
Increasing Loop:0
Decreasing Loop:0
This shows that hotspot sever is much more clever than some programmers.
Even if you change the code to do something bit better like
public TimeLoop() {
int a = 2,b=2;
long startTime = System.currentTimeMillis();
for (int i = 0, n = Integer.MAX_VALUE; i < n; i++) {
a ^= i;
long midTime = System.currentTimeMillis();
for (int i = Integer.MAX_VALUE - 1; i >= 0; i--) {
a ^= i;
long endTime = System.currentTimeMillis();
System.out.println("Increasing Loop:" + (midTime - startTime));
System.out.println("Decreasing Loop:" + (endTime - midTime));
System.out.println("a="+a+" b="+b); // Hotspot must perform _some_ kind of calculation to print this
}You'll find that it doesn't really matter whether you're xoring in increasing or decreasing order.
For -client:
Increasing Loop:296
Decreasing Loop:297
a=2 b=2
Increasing Loop:297
Decreasing Loop:281
a=2 b=2
Increasing Loop:297
Decreasing Loop:297
a=2 b=2
For -server:
Increasing Loop:141
Decreasing Loop:156
a=2 b=2
Increasing Loop:141
Decreasing Loop:141
a=2 b=2
Increasing Loop:140
Decreasing Loop:156
a=2 b=2
(Last three runs for each).
And I don't believe that accessing array.length is slower than storing the length in an int and comparing against that int!
Please let's just stop posting silly perfomance tuning tips!Well, you can always look at the bytecode produced. I wrote two little classes:public class t {
public static void main ( String[] args ) {
int a = 0;
for (int i=0,n=Integer.MAX_VALUE;i<n;i++){ a =-a; }
}andpublic class t1 {
public static void main ( String[] args ) {
int a = 0;
for (int i=Integer.MAX_VALUE-1 ; i>=0 ; i--){ a =-a; }
}And here's the bytecode for their main() methods. (Extra/different bytecodes in "t" are marked):t: (incrementing)Method void main(java.lang.String[])
0 iconst_0
1 istore_1
==>2 iconst_0
3 istore_2
4 ldc #2 <Integer 2147483647>
6 istore_3
7 goto 16
10 iload_1
11 ineg
12 istore_1
13 iinc 2 1
16 iload_2
==>17 iload_3
==>18 if_icmplt 10
21 return
t1: (decrementing)
Method void main(java.lang.String[])
0 iconst_0
1 istore_1
2 ldc #2 <Integer 2147483646>
4 istore_2
5 goto 14
8 iload_1
9 ineg
10 istore_1
11 iinc 2 -1
14 iload_2
15 ifge 8
18 return The decrementing code does use fewer bytecodes to do its thing.
However, as someone pointed out - once Hotspot gets involved, all bets are off. And as someone else pointed out, if the body of the loop does nearly anything at all, the 2-bytecode-difference is going to get completely swamped.
In general, this is the kind of micro-optimizing that I'd ignore completely...
Grant -
Improving backup performance for Essbase / Planning
Hi all
I am trying to improve out backup performance and limit downtime for our Planning applications. Currently we are running 11.1.1.3 and an instance of 11.1.2.1. We are doing your standard cold backups on the Essbase side (shut down, copy files) then we do a level 0 export out for a logical backup. Downtime is getting a bit restrictive and the business wants a more DR friendly solution.
Has anyone tried any of these options and if so please let me know how they worked
1. Use BCV technology to snap off a copy of the essbase databases to limit downtime of a normal copy.
2. HTBase backup utility, demo looked good, is it proven
3. Transaction log mode with hot backups.
Im just trying to weigh the best options and see what is proven out there
any help would be greatHi Mike,
You can take backup using "Archive database " functionality. While data is being archived , the database is put into read only mode. Only thing is that you wont be able to write data into the cube at that time, but it might increase the time for which you take backup as data archive backs up the wole database with all the dataabse.
You can also use the replay BSO feature by enabling transaction logging.
See if this Helps.
Cheers,
SS
Edited by: Saurav Sarkar on 5 Feb, 2013 5:11 AM
Maybe you are looking for
-
Scroll Bar Problem after Printing a web page containing multiple page data
Hi All, I have a web application which has two DIV, one is main and one is child. I am having problem in printing multiple pages. There is a lot of data in the child DIV and i am using JavaScript functions to control the print functionality. When i p
-
HT5624 I can't buy gold for my game ( game of war fir age )
Hey there I can't buy gold from iTunes Store from the game I don't know why Can you help me please guys Thanks you very much
-
How can it be the Mobile Hotspot feature worked, failed, and then worked again?
I am having a love hate relationship with my Galaxy S3. The latest experience happened when I arrived at the beach expecting to connect to the Internet through a mobile hotspot established on my Galaxy S III; but that was not to be. When I turned on
-
Random Reboots after Mountain Lion Update MacBook Pro
Hey All, So I've just installed mountain lion on my macbook pro, However I've been running into an issue of frequent (like 3-5 times per day) crashes. The screen simply just goes black and the computer restarts. Any idea what the issue could be? Here
-
Moving the stock to inspection to unrestricted
hi, i completed the flow from gr to destination bin flow but the stock remains in quality inspection not in unrestricted use. how to move the stock from quality inspection to unrestricted use.(without changing the bin number) Regards muthuraman