Windows 32 . Kernel CPU Spike and Performance issues.

Hi
We have several oracle databases that run on windows 32bit OS. ORacle version 11.1.0.7.0. All of a sudden there is a spike in the Kernel cpu usage ( Goto task manager -> View -> Show Kernel times). The kernel cpu time is shown in red which is around 30 -40% in our case and is consistant.
On one of the databases our prior dba upgraded to patch29, and reloaded the dictionary and this solved the problem for some time.
Has anyone experienced this before , how can we resolve this. Any help would be appreciated.
Thanks

sb92075 wrote:
there is a spike in the Kernel cpu usage Kernel spike is OS issue; not lowly application.SB92075,
It is often user mode applications that drive the kernel mode CPU consumption. See the following two articles and the attached comments:
http://hoopercharles.wordpress.com/2010/06/16/systemkernel-mode-cpu-usage-what-is-wrong-with-this-quote/
http://kevinclosson.wordpress.com/2010/06/17/running-oracle-database-on-a-system-with-40-kernel-mode-overhead-are-you-normal/
To the OP,
With a Windows server, you can use a VBS script to drill into the specific session that is generating a lot of kernel mode CPU time. Part 1 of the two part series shows the output, while part 2 of the series shows the script that generated the output:
http://hoopercharles.wordpress.com/2010/01/09/drilling-into-session-detail-from-the-operating-system-on-the-windows-platform/
Charles Hooper
Co-author of "Expert Oracle Practices: Oracle Database Administration from the Oak Table"
http://hoopercharles.wordpress.com/
IT Manager/Oracle DBA
K&M Machine-Fabricating, Inc.

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7 year, 100+ PC Veteran Stumped ! Power, and performance issues. Full detail included.

Good morning everyone! (At least it's morning in wonderful Pennsylvania USA!)
AMD Athlon 64 3200+ (New Castle)
Thermaltake Venus 12 CPU Cooler w/ Manual Adjust
MSI "K8T Neo-FIS2R" K8T800
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Creative SoundBlaster Audigy Platinum eX
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There we have it, I think that that is all you need to know to perhaps give opinions and advice. Allow me to elaborate on why I am posting today after browsing this wonderful forum for the last two weeks. (...and by the way, my hat's off to some of you knowledgeable regulars for helping out a lot of newbies and folks in trouble!) Without further adieu:
Problem #1: POWER ISSUE
When, or if, I remove AC Power from my PC for whatever reason I run into a problem in which after reconnecting the AC Power and attempting to turn on the computer it goes into a 3-5 second startup loop in which the PC does not post, but rather cycles power to all of the components indefinitely. I notice the LEDs on my optical drives cycling repeatedly ad infinitum until I power off using the 4-second hold method, and then press the power button again. At this point the PC boots up fine, and boots up fine going forward from all restarts and shut downs. How strange? I've never, EVER, encountered something like this before.
Problem #2: PERFORMANCE ISSUE
This PC has a handful of serious performace issues.
3dMark03 scored horribly.
Prime95 runs ridiculously slow although there are no erros! It runs much more quickly on my work PC which is a PIII 866mhz with 384MB of PC133 RAM.
I receive, on no regular frequency, or while doing anything in particular, Explorer memory errors. Not BSOD's mind you, but "...blah blah blah referenced memory address xxxxx-xxxxx and could not be written". This causes Explorer to restart itself, blowing away the start menu, task bar, and any Explorer windows open. They reappear, of course, without incident.
The most off performance issue of all is that when opening an Explorer window for either of my IDE HDs, designated D and E drives, I find that when using the highlighting rectangle tool the Explorer window freezes or lags. I can double-click and open or move/copy files without incident, but if I attempt to highlight by this method this halt or lag occurs.
Also, since my update of the BIOS from 1.2 to 1.7, and then to 1.8 system startup times prior to Windows loading are HORRID. I have disabled just about everything, and yet the SATA BIOS loads for 5 seconds, and then I must wait 20 seconds for Windows itself to come to the login screen. No other BIOS related issues to report per se, but this is terrible for what should be a blazingly fast computer.
Now let's see.. what have I tried to do to repair the issues?
1) 2 BIOS flashes. First from 1.2->1.7, and then from 1.7->1.8. Ostensibly this was just "because". The power user need to have the latest! I noticed the incorrect CPU temperature being reported, however.. This led to me buying this massive ThermalTake HSF to replace my stocker. I also added more thermal goop than I ever have before, as well as a PCI slot fan before I became aware that it was a BIOS issue! GRRRR MSI.
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3) I unplugged every molex cable, the 4-pin CPU power, and the 20-pin ATX power and rerranged them all - as well as removed and then reinserted the RAM.
4) I tried changing my memory timings and power management settings, etc in BIOS. Nothing seem to impact the issue. I didn't fiddle with the voltages, but I should not need to running the RAM at SPD or lower settings and without overclocking the system at all!
5) Another issue that I had that seems to have vanished, come back, vanished, and then come back a "little bit" is my USB ports. When set to enable legacy devices in BIOS my USB items like my Logitech wireless keyboard would just cycle power and refuse to function. Also my UPS connected VIA USB seems to sometimes handshake with Windows and sometimes not. I've tried using all of the different ports, etc but the problem remains. I NEED 6 ports for my devices so it is all that I could do!
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Soooo.. Show me what a n00b I am, oh great ones. I've built over 100 PCs since 1998 for myself, friends, families, and customers... and I've never seen an issue like this one! I'm no dummy, but please don't assume too much. Other pros on here know full well you can forget the most simple mundane detail in spite of experience! I want to solve this problem. I am on the verge of shelling out for a new motherboard and processor of the 939 pin variety.. and am now wary of MSI's long awaited socket 939 K8 Neo2 board despite it's awesome reviews. MSI has never really given me trouble before.. but I don't really want to spend money to the order of $200+ for that damned Gigabyte board. Gigabyte has always been good to me as well. Save my wallet! PLEASE!!!
Thanks so much everyone, I tried very hard not to leave out any details!
Az (Ian)
You can reach me on Yahoo or AIM just about any time, and I will check here frequently.

Quote
Originally posted by AzaghalSEI
Good morning everyone! (At least it's morning in wonderful Pennsylvania USA!)
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Thermaltake Venus 12 CPU Cooler w/ Manual Adjust
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2x Viewsonic 19" VX900 LCD Monitors
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Lite-On SOHD-167T Black 16x DVD-ROM
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Western Digital WD2500JB 250GB 7,200rpm 8MB IDE
Seagate Barracuda ST3200822AS 200GB 7,200rpm 8MB IDE
Lian-Li PC-65B Black Aluminum Case
Vantech PCI Slot Fan
CyberPower 825va Voltage Regulating UPS
Windows XP Professional SP1a
There we have it, I think that that is all you need to know to perhaps give opinions and advice. Allow me to elaborate on why I am posting today after browsing this wonderful forum for the last two weeks. (...and by the way, my hat's off to some of you knowledgeable regulars for helping out a lot of newbies and folks in trouble!) Without further adieu:
Problem #1: POWER ISSUE
When, or if, I remove AC Power from my PC for whatever reason I run into a problem in which after reconnecting the AC Power and attempting to turn on the computer it goes into a 3-5 second startup loop in which the PC does not post, but rather cycles power to all of the components indefinitely. I notice the LEDs on my optical drives cycling repeatedly ad infinitum until I power off using the 4-second hold method, and then press the power button again. At this point the PC boots up fine, and boots up fine going forward from all restarts and shut downs. How strange? I've never, EVER, encountered something like this before.
Problem #2: PERFORMANCE ISSUE
This PC has a handful of serious performace issues.
3dMark03 scored horribly.
Prime95 runs ridiculously slow although there are no erros! It runs much more quickly on my work PC which is a PIII 866mhz with 384MB of PC133 RAM.
I receive, on no regular frequency, or while doing anything in particular, Explorer memory errors. Not BSOD's mind you, but "...blah blah blah referenced memory address xxxxx-xxxxx and could not be written". This causes Explorer to restart itself, blowing away the start menu, task bar, and any Explorer windows open. They reappear, of course, without incident.
The most off performance issue of all is that when opening an Explorer window for either of my IDE HDs, designated D and E drives, I find that when using the highlighting rectangle tool the Explorer window freezes or lags. I can double-click and open or move/copy files without incident, but if I attempt to highlight by this method this halt or lag occurs.
Also, since my update of the BIOS from 1.2 to 1.7, and then to 1.8 system startup times prior to Windows loading are HORRID. I have disabled just about everything, and yet the SATA BIOS loads for 5 seconds, and then I must wait 20 seconds for Windows itself to come to the login screen. No other BIOS related issues to report per se, but this is terrible for what should be a blazingly fast computer.
Now let's see.. what have I tried to do to repair the issues?
1) 2 BIOS flashes. First from 1.2->1.7, and then from 1.7->1.8. Ostensibly this was just "because". The power user need to have the latest! I noticed the incorrect CPU temperature being reported, however.. This led to me buying this massive ThermalTake HSF to replace my stocker. I also added more thermal goop than I ever have before, as well as a PCI slot fan before I became aware that it was a BIOS issue! GRRRR MSI.
2) I thought perhaps for the one issue that one of the hard drives was an issue, and even perhaps for power, but I replaced each with new drives and tested all 4 on another PC. NO problems. Also I should perhaps mention that my IDE drives are all hooked up using Antec Cobra cables. Expensive yes, but why the hell not, right? I've never seen a hang-off grounding wire for IDE before. Decided not to use them as I could think of a great place to screw them in, nor have other PC using them had trouble skipping the ground wire.
3) I unplugged every molex cable, the 4-pin CPU power, and the 20-pin ATX power and rerranged them all - as well as removed and then reinserted the RAM.
4) I tried changing my memory timings and power management settings, etc in BIOS. Nothing seem to impact the issue. I didn't fiddle with the voltages, but I should not need to running the RAM at SPD or lower settings and without overclocking the system at all!
5) Another issue that I had that seems to have vanished, come back, vanished, and then come back a "little bit" is my USB ports. When set to enable legacy devices in BIOS my USB items like my Logitech wireless keyboard would just cycle power and refuse to function. Also my UPS connected VIA USB seems to sometimes handshake with Windows and sometimes not. I've tried using all of the different ports, etc but the problem remains. I NEED 6 ports for my devices so it is all that I could do!
6) I have an Enermax 550w EG651P-VE(FMA) with 36 amps on each voltage rail on it's way, and it should arrive tomorrow. Despite all of the crap regarding power supplies that I see on this board I am not confident that it's the problem. That Antec PSU should be able to hold it's on with 20 amps on the +12v channel. C'mon now. I build a nearly identical system with the same power supply for a customer and he has no problems at all. He also has 3 HDs, same motherboard, etc.. the only difference is he has but one optical drive and a 2800+ rather than a 3200+. That power difference should be decimal nature in amps needed.
...oh and the sound card is in PCI slot 3, for those that remember the glory days of sound card IRQ issues that Creative was once notorious for... oh, and I disable the ethernet boot device, etc so my slow startups should not be related. My serial ATA drive is also on connection 1 of the VIA controller.. Promise can kiss my a**.
Soooo.. Show me what a n00b I am, oh great ones. I've built over 100 PCs since 1998 for myself, friends, families, and customers... and I've never seen an issue like this one! I'm no dummy, but please don't assume too much. Other pros on here know full well you can forget the most simple mundane detail in spite of experience! I want to solve this problem. I am on the verge of shelling out for a new motherboard and processor of the 939 pin variety.. and am now wary of MSI's long awaited socket 939 K8 Neo2 board despite it's awesome reviews. MSI has never really given me trouble before.. but I don't really want to spend money to the order of $200+ for that damned Gigabyte board. Gigabyte has always been good to me as well. Save my wallet! PLEASE!!!
Thanks so much everyone, I tried very hard not to leave out any details!
Az (Ian)
You can reach me on Yahoo or AIM just about any time, and I will check here frequently.
The startup problem might just be a screwy psu. Your antec *should* be able to power your stuff just fine, but maybe it is defective in some strange way.
What is your 3dmark03 score? If it is 3000-4000, (approx perf. level of ati 9600xt), then it is fine.
Check your memory using memtest86+, and try underclocking it to ddr333.
UNplug usb devices, and see if it speeds up boot. Also, I would not recommend bios 1.8 since people seem to have some troubles with it.
Also, try disabling agp fast writes, disabling spread spectrum, and maybe boosting ram voltage a tiny bit.
Try booting without your audigy plugged in, and try booting barebones (nothing but 1 hard drive with os) and see what happens.
I'm no expert, but you might get lucky trying these steps.

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I am definitely disappointed with my computer.
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September 24th, 2008
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November 9th, 2009
HD Problems
One year later, in late 2009, I purchased a Mac OS update, the Snow Leopard. I was back to Brazil, where I live till today. During the OS installation, something went wrong and it couldn't be completed. Mac asked me to restart the computer, but then the system didn't start anymore; some files were corrupted. I guess there was not enough space to install the update, so it was not completed; but it should be no reason to the corruption of the OS.
November 10th, 2009
I took my computer to the local Apple technical support, the "Omni Informatica", in Curitiba, PR, Brazil, to format the HD and reinstall the Snow Leopard. As I needed more space, I also changed my original 160Gb HD for a new 250Gb Western Digital HD. The service was finished in Nov 17th.
I noticed also little cracks in the laptop case, but I had no time to insist with the bad local technical support to repair it (I know Apple already acknowledged this problem.) They said, at first, that they would have to ask the Apple USA to send the body, or something like that.
(Pictures:http://picasaweb.google.com/gstorck/MacbookProblems#5476986477312032226)
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The reinstallation was ok, and the laptop was running well. Suddenly, when I take the Macbook from the case and open it on my desk, something pretty wrong appears: a large crack on the lower right corner of the screen.
It was not dropped, it was not crashed, and I did not "close it with a pen inside".
The screen simply cracked. And as so many similar problems with another users I could easily find on the web, I really expect Apple to admit it as a Manufacture's fault. The local technical support said it is no other thing except I hit the laptop, or dropped it, so it's all my fault. (See Picture 3)
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If the problems were just it, it would be not so bad.
(Pictures: http://picasaweb.google.com/gstorck/MacbookProblems#5476986361400585122)
February 11th, 2010
HD FAILURE
After 1 month, on Feb 11th, my new 250Gb HD simply stopped working. Different from the first time, that the HD was just corrupted, this time it has really broken, it died. I had it all backed up, but I have lost the HD.
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May 28th, 2010
DECREASE IN PERFORMANCE
I'm working again with the original 160Gb HD (formatted and reinstalled), and some other external drives to store my files.
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Don't forget: It's a 1,5-year-old Macbook, with 2.4GHz, 4Gb RAM and the O.S. is installed for no longer than 4 months. It is supposed to work better, I guess.
I saved a lot of money to buy a good computer, and to get rid of the endless issues I had with PCs. That issues never were so serious with the ones I face now with Macbook.
Even if I pay R$1200 to replace the screen, with the money I don't have, I would still stand these performance issues, which seem to have come with this problematical laptop. I hope to have some solution from Apple, if it want to deliver what it promises and want to keep a customer.
Otherwise, I will have to change to another system platform and another computer manufacturer, to see if I stop throwing money away with these devices. I think that maybe at least, the cost-benefit ratio will be higher.
Did anybody receive contact from Apple support about these screen problems?
Guilherme R. Storck
Apple user since 2008
<Edited By Host>
gstorck (at) gmail (dot) com

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praveen

Hi,
when there is no suitable business content datasource we go for creating generic data source.
by using generic data source we can extract data present in single or multiple tables.
If the data is present in the single table we go for generic data source extracting from table.
If the data that is to be extracted is present in multiple tables and the relation between the tables is one to one and if there is a common field in both the tables we create a view on these tables and create a generic data source extracting from view.
if you want to extract data from different tables and there is no common field we create a info set on these tables and create a generic datasource extracting from query.
if you want to extarc the data from different tables and the relation is one to many or many to many we create a generic data source from function module.
If we extarct from function module ,at run time it has to execute the code and brings the data to BW.so it degrades the loading performance.
regards,

----Constraints and Performance issues----

Hi all,
I have a major concern and I would like ur suggestion on the best way to handle it.
I have a staging table cust_staging. I have 2 target tables customer, customer_address which must be populated from this staging table.
The customer key in all 3 tables is the primary key. For table customer_address, the customer_key is also referenced from the customer table.
Incremental data will be available in the staging table (aorund 0.2 million) and the customer table would have appx 2 million records.
The concern I have is that i have to insert/update this information into the target tables without disabling the foreign key constraints.
I tried to insert into both the target tables with the constraints enabled but the mapping just hangs and I am forced to kill the process. I had tried using a single mapping to populate both tables and when that was going into hang mode, i tried with first customer and then another mapping for customer_address. This also just goes on hang mode.
Next I tried to disable the constarint and enable it again in the mapping itself. My concern here is that if I do a blind insert and when I re-enable the constraints, if there is a violation, the target table may goto an unusable state and my target table will become non usable.
My concern here is how to tackle this problem. Can i first disable the constraints, incorporate some logic using the pre-mappings wherein I can apply business rules to check the constraints explicitly and then redirect the bad records to reject and other records to the actual target.
Please do let me know how I should handle this situation in OWB bearing in mind the performance issues also.
we use owb 9.2.

Hi all,
I have a major concern and I would like ur suggestion on the best way to handle it.
I have a staging table cust_staging. I have 2 target tables customer, customer_address which must be populated from this staging table.
The customer key in all 3 tables is the primary key. For table customer_address, the customer_key is also referenced from the customer table.
Incremental data will be available in the staging table (aorund 0.2 million) and the customer table would have appx 2 million records.
The concern I have is that i have to insert/update this information into the target tables without disabling the foreign key constraints.
I tried to insert into both the target tables with the constraints enabled but the mapping just hangs and I am forced to kill the process. I had tried using a single mapping to populate both tables and when that was going into hang mode, i tried with first customer and then another mapping for customer_address. This also just goes on hang mode.
Next I tried to disable the constarint and enable it again in the mapping itself. My concern here is that if I do a blind insert and when I re-enable the constraints, if there is a violation, the target table may goto an unusable state and my target table will become non usable.
My concern here is how to tackle this problem. Can i first disable the constraints, incorporate some logic using the pre-mappings wherein I can apply business rules to check the constraints explicitly and then redirect the bad records to reject and other records to the actual target.
Please do let me know how I should handle this situation in OWB bearing in mind the performance issues also.
we use owb 9.2.

Memory management in jelly bean xperia tablet s and performance issues

Most used apps are always in memory.
while recent apps few remain in memory untill memory is full.
this is how memory management is supose to work.
pretty much same as windows 7
but if this true then why are games lagging ?
http://www.youtube.com/watch?v=S3TwBlW5ibk
When their not enough memory games i suspect lagging.
if their not enough memory recent apps getting killed to free up ram.
why does't this happen ?
And why are their apps in memory that i never use ?
tv sideview never use why its in memory ?
social life again never use again using memory
reader widget again using ram again never use at all
music unlimited again in memory never actualy use
Like i say'd most used apps are in memory all the time while rest is in cache.
But my most used apps are never in ram untill i start them
now if disabled lot apps my tablet become much faster respondsive.
Can sony plz plz plz plz fix memory management stop saying you did ?
You maybe reduced random shutdowns by like 90% or 95% perhaps even 99.99%
Before random shutdowns happend because of broken memory management, which obviously still broken as i see lag in games
sony apps use way to much ram, stop treating it like a computer with infinity amount of ram

I rooted my tablet, and when looking at the processor speed in SetCPU, Sony uses a governor for power management that makes the tablet run jagged... I changed the power governor to ondemand, and got MUCH better smoothness and performance, while not sacrificing my battery life. You should try it out, maybe that'll help with games and such.

HashSet and performance issue

Hello all:
When I was in a project, I was told that HashSet was once used but abandoned since it has a performance issue in operations like insert or update. Is it true? and why is it? I don't know about the implementation of HashSet, maybe it's slow for the same reason like ArrayList?
And if it's the case, can we write a customized set and how?
Thanks,
Sway

fathomBoat wrote:
I don't know about the implementation of HashSet, maybe it's slow for the same reason like ArrayList?ArrayList slow ???
Filling an HashSet is slower than ArrayList because HashSet has to check if an item is already present before adding it (very usefull to prevent duplicate entries).
Here's a small test you're free to complete if you want to test other methods :
    public static void main(String[] args) {
        List<Integer> list = new ArrayList<Integer>();
        Set<Integer> set = new HashSet<Integer>();
        // Test on ArrayList
        long startL = System.currentTimeMillis();
        for (int i = 0; i < 100000; i++) {
            list.add(Integer.valueOf(i - (i%2)));
        long endL = System.currentTimeMillis();
        System.out.println("List\t(" + list.size() + ")---> \t" + (endL-startL) + " millisec.");
        // Test on HashSet
        long startS = System.currentTimeMillis();
        for (int i = 0; i < 100000; i++) {
            set.add(Integer.valueOf(i - (i%2)));
        long endS = System.currentTimeMillis();
        System.out.println("Set \t(" + set.size() + ")---> \t" + (endS-startS) + " millisec.");
    }Output :
List     (100000)--->      39 millisec.
Set      (50000)--->      112 millisec.

ATPO Check and performance Issue

Hi All
We had performance issues for ATP check from R/3 to APO and while we asked SAP for help SAP responded saying the data volume for table TTSTR is high and we need to delete unnecessary data by running report -/SAPAPO/SCHED_DELETE_TSTRS and ZZSTRDELE. After running these two reports in test environment we found the data volume has reduced to 96 records from 105000 records. We asked SAP to know whether this is safe to run this and got response that we need to be carefull while running these as data is permanently deleted by this
Can anybody tell whether its completely safe to run these two reports or we may delete genuine Time Streams by running these?
Regards
Mridul

Mridul,
It seems very odd that you would open a dialogue with SAP, and then when you needed further information about their proposal, you didn't go back and ask them the question you have now posted here.
Although I have only run this report a couple of times, I have never had any problem running report /SAPAPO/SCHED_DELETE_TSTRS For more info, refer to their supporting note.
https://service.sap.com/sap/support/notes/1254606
I can't comment on report ZZSTRDELE, since I have never heard of it, nor does it exist in any APO system I am currently working on.
If you have doubts about SAP's recommendations, I suggest you go back to your message and respond to their last reply, or if the old message is closed, raise a new message. That's what you pay your support money for.
Best Regards,
DB49

Number of Workitem Containers and Performance Issues

Hi All,
Is there a major performance issue based on the number of workflow containers.
I know its recommended that the containers should be single line rather multiline and to keep the number of containers less
Did anyone face some performance issue with many containers and any idea on what is the minimum number to keeping performance into consideration.
Thanks,
Charan.

Performance does not come in for Workflow container but it is also a good practise to make the number of Workflow container less. Generally if you consider a sophesticated Workflow Expert who is only into developing will have the minimum of Workflow container. But if that same expert has experience in Support Project where he has to analyse Wflow developed by other expert then it is always handful to maintain all the meaningful information in the Workflow container. I will recommend to use minimum of Workflow container element but this should not sacrifice the information Container element.
Thanks
Arghadip

Stability and Performance Issue With Aperture 3

I'm running Aperture 3.0.3 on my iMac. This is a switch from Adobe products and I'm having a ton of stability and performance problems.
Environment:
* My library is about 32,000 images, about 1/3 of which are 21 megapixel, the remainder are 10 megapixels or smaller.
* I have no smart albums.
* All images are referenced and live on an external FW800-connected RAID5 array. The library lives on my internal drive.
* I have an Apple Cinema display connected through the mini-DVI port.
Here's what's happening. Initially, Aperture starts up fine and things are peachy. After a few adjustments -- particularly cloning or patching, rendering becomes slow. It becomes slow as in a minute or more. On a 21 megapixel file, this is an incredible productivity killer. Here is what I've tried to make Aperture go faster (not all at the same time):
- Log in holding the shift key to make sure nothing but core system stuff is running
- Rebuild Aperture library
- Defragment internal hard disk using iDefrag
- Export a subset of images to a separate library and work on them there
None of these has had the desired effect. Worse, if I switch to full-screen mode, the whole interface becomes balky and can become unresponsive to the point where the only way out is to cold reboot the computer. Cmd+TAB doesn't even work.
I can't imagine this is an experience shared by many users of the screaming would be deafening. Lightroom and Photoshop are insanely fast by comparison so it can be done -- and on this computer.
What are the best practices for speeding up Aperture?
Thanks,
Steve
Message was edited by: films-so-last-year

Have you tried the Bergsma BAsh?
Many of us who have upgraded our library's over time have cleaned out caches using a technique discovered by Matthew Bergsma . It cleans out some obsolete files that significantly slow aperture 3 down.
Here's what you should do:
Quit aperture
Navigate to your aperture library.
Ctrl click library and select show package contents
Open the thumbnails folder and drag contents to trash.
Then delete the entire contents of the following cache folders:
Hard Drive/Library/Caches
Hard Drive/System/Library/Caches
Hard Drive/Users/Your username/Library/Caches
You may also like to delete the preferences file but that's up to you.
~/Preferences/Library/com.apple.aperture.plist
Open Aperture:
Rebuild Thumbnails click library - photos
Then select one photo and apple(command) A to select all.
Then go to the photo menu and choose generate thumbnails.
It'll take a while to go through them all but once it's all done Aperture 3 should zip along
You can read Matthew's original post:
here http://discussions.apple.com/thread.jspa?threadID=2359859&start=0&tstart=0
Hope this is of help!
M.

Premiere Pro CS5 Playback and Performance Issues

I upgraded (2) separate editing work stations to CS5 from CS4 about a month ago. I moved from 4 to 5 to try and get rid of some problems which both work stations were encountering.
The problems since the upgrade are similiar: playback from timeline has intermittent audio drop out and video going to black during playback, (new one)-video locked up but audio kept playing-system hung and had to be rebooted.
Also, when clicking around on the timeline or scrubbing the timeline, Premiere crashes.
This type of performance on playout or timeline usage is consistent on both machines which have indentical setups and builds. None of this happens all the time but happens enough to causes problems with workflow. We edit on the work stations, dub files to playback system for air, and use a shared server to move files back and forth as needed but files are always stored locally instead of using straight from server.
These machines are:
Premiere Pro CS5.02
OS WIndows 7 Pro 64 bit
12 GB Ram, DDR3-1333 (6-2GB modules)
CPU Intel Xeon Quad Core [email protected] GHZ, 2 processors, 8 MB Cache
500 GB SATA 2 hard drive, 7200 RPM, 32 MC (System Drive)...309 GB of space avail
(3) 1 TB SATA 2 hard drives, 7200RPM, 32 MC (3 TB, RAID0 STorage) 2.16 TB of space avail
Nvidia GE Force 9800 GT Graphics card, DUAL DVI, 1 GB
REaltek High Def Audio, Drivers 6.0.1.5953
(1) monitor in use
output of system runs to ADVC-700 breakout box to feed playback system
I have all of my software installed on C: (309 GB of 500 GB avail)
I have all of my videos files stored on D: (Raid Storage with 2.16 TB of 3 TB avail)
The only changes I've made since installing CS5 would be to change the auto save from 20 minutes to 60 minutes. Don't know if an auto save would cause an issue on playback as I've noted above.
I'm not a computer whiz by any stretch of the imagination but I can follow directions if given for testing/eval.

Do the PPBM5 Benchmark and send the results to me by PM, in addition to sending the results to Bill as indicated. I'll have a look at what might be going on here.

Windows 32 . Kernel CPU Spike and Performance issues.

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