About my voltage drops and Vitru Technology

Ok, as far as i know the vdroop can't be disabled in my GD65 motherboard, it's only Auto and +12.....+100 [now it's Auto]
For example if i put in BIOS the voltage 1.23V, back in Windows when it's idle the voltage is 1.23V, but when i stress test the CPU it drops on 1.21V
I guess i have some sort of vdroop that is in my motherboard, and it can't be disabled ?
And for a multiplier OC, i should disable EIST and C1E ?
And regarding Virtu Tech. Why when i enable Virtu in the BIOS, then i click save bios settings, my PC stops and automatically starts 4 times ??

Quote from: CalinTM on 09-January-13, 22:50:26
Ok, as far as i know the vdroop can't be disabled in my GD65 motherboard, it's only Auto and +12.....+100 [now it's Auto]
For example if i put in BIOS the voltage 1.23V, back in Windows when it's idle the voltage is 1.23V, but when i stress test the CPU it drops on 1.21V
I guess i have some sort of vdroop that is in my motherboard, and it can't be disabled ?
And for a multiplier OC, i should disable EIST and C1E ?
And regarding Virtu Tech. Why when i enable Virtu in the BIOS, then i click save bios settings, my PC stops and automatically starts 4 times ??
When I enabled / disabled the IGD with my SB Cpu I had the same behavior on the initial boot. THen it was fine.
No you cannot disabled vdroop, 100% is as close as you can get to none.
If you want EIST & C1E, I would suggest a turbo oc. If you want to do a hard multiplier oc, suggest disabling the power savings features.

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Error message: ni: A frame has been dropped and the acqusition has been canceled

I use a NI PCIe 1433 framegrabber with a Basler spl4096-140km line camera.
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When I use the Matlab image acquisiton toolbox to acquire data, I however very often get the error message: 'ni: A frame has been dropped and the acqusition has been canceled". This happens even at much lower framerates (20kHz) and only seems to go away when acquiring data slowly.
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Do you have any pointers why this error message appears and what can be done about it?
Thank you!
Reto

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Hey all,
I am currently redesigning a weekly process (weekly coz we pre determined the rate of index fragmentation) for specific indexes that get massive updates. The old process has proved to be able to fix and maintain reports performance.
In this process we rebuild specific indexes using the below command:
Alter index index_name rebuild online;
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Create Index Index_Name on Table_name (Col1, col, ..);
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SELECT ProductID, ProductName, MfrID FROM PRODUCT WHERE MFRID = 'Mfr1';
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)|
| 0 | SELECT STATEMENT | | 37 | 3737 | 13 (0)|
| 1 | TABLE ACCESS BY INDEX ROWID| PRODUCT | 37 | 3737 | 13 (0)|
| 2 | INDEX RANGE SCAN | PRODUCT_X1 | 37 | | 3 (0)|
dropping PRODUCT_X1 and recreating it only changed the cost to 12.
Gathering the stats again took the cost to 14.
No performance issues were faced and index was still used.
My question is: Is there any oracle recommendation that requires rebuilding the index instead of dropping and recreating it?
Is there any side effect to my approach that I did not consider?
Thank you

Charlov wrote:
I am currently redesigning a weekly process (weekly coz we pre determined the rate of index fragmentation)Nice. Not only have you defined and located index fragmentation but have also measured the rate at which it occurs.
Could you please share your definition of index fragmentation, how you detect it, and how you measure the rate of change of this fragmentation.
I am curious about all this since it can be repeatedly shown that Oracle btree indexes are never fragmented.
http://richardfoote.files.wordpress.com/2007/12/index-internals-rebuilding-the-truth-ii.pdf
The old process has proved to be able to fix and maintain reports performance.Great so you have traces and run time statistics from before and after the rebuild that highlight this mysterious fragmentation and show how the fragmentation caused the report to be slow, details what effects the rebuild had that caused the reports to perform better.
Please share them as these would be an interesting discussion point since no one has been able to show previously how an index rebuild caused a report to run faster or even show the fragmentation that caused it to be slow in the first place.
I mean it would be a pity if the report was just slow because of an inefficient plan and compressing an index or two that probably shouldn't be used in teh first place appears to temporarily speed it up. Could you imagine rebuilding indexes every week, because some developer put the wrong hint in a query? That would be pretty funny.

Performance issue with drop and re-create index

My database table has about 2 million records. The index in the table was not optmized, so we created a new index lets call it index2. So this table now was the original index (index1) and the index2. We then inserted data into this table from the other box. It was running for a few weeks.
Suddenly we noticed that a query which used to take a few seconds now took more than a minute. The execution plan was using the index2 which technically should be faster. We checked if the statistics were upto date and it was. So then we dropped the new index, re-ran the query and it completed in 10 sec's. It was usign the old index. This puzzled me since the point of the index2 was to make it better. So then we re-created index2 and genrated stats for the index. Re-ran the query and it completed in 5 sec's.
Everytime we timed to run the query, I shutdown and restarted the box to clear all cache's. So all the time I have specified are pure time's and not cached. The execution plan using index2 taking 1 min and 5 sec's are nearly the same, with very minior difference in cost and cardnitality. Any ideas why index2 took 1 min before and after drop and create again takes only 5 sec.
The reason I want to find the cause is to ensure that this doesn't happen again, since its impossible for me to re-create the index everytime I see this issue. Any thoughts would be helpful.

Firstly the indexes are different index1 is only on the time column, where as index2 is a composite index consisting of 3 columns.
Here are the details. The test that I did were last friday, 3/31. Yesterday and today when I executed the same query I get more increased times, yesterday it took 9 sec amd today 17 sec. The stats job kicked in on both days and is upto date. This table, nothing gets deleted. Only added.
3/31
Original
Elapsed: 00:01:02.17
Execution Plan
0 SELECT STATEMENT Optimizer=CHOOSE (Cost=6553 Card=9240 Bytes
=203280)
1 0 SORT (UNIQUE) (Cost=6553 Card=9240 Bytes=203280)
2 1 INDEX (FULL SCAN) OF 'EVENT_NA_TIME_ETYPE' (NON-UNIQ
UE) (Cost=15982 Card=2306303 Bytes=50738666)
drop index EVENT_NA_TIME_ETYPE
Elapsed: 00:00:11.91
Execution Plan
0 SELECT STATEMENT Optimizer=CHOOSE (Cost=7792 Card=9275 Bytes
=204050)
1 0 SORT (UNIQUE) (Cost=7792 Card=9275 Bytes=204050)
2 1 TABLE ACCESS (BY INDEX ROWID) OF 'EVENT' (Cost=2092
Card=2284254 Bytes=50253588)
3 2 INDEX (RANGE SCAN) OF 'EVENT_TIME_NDX' (NON-UNIQUE
) (Cost=6740 Card=2284254)
create index EVENT_NA_TIME_ETYPE ON EVENT(NET_ADDRESS,TIME,EVENT_TYPE);
BEGIN
SYS.DBMS_STATS.GENERATE_STATS('USER','EVENT_NA_TIME_ETYPE',0);
end;
Elapsed: 00:00:05.14
Execution Plan
0 SELECT STATEMENT Optimizer=CHOOSE (Cost=6345 Card=9275 Bytes
=204050)
1 0 SORT (UNIQUE) (Cost=6345 Card=9275 Bytes=204050)
2 1 INDEX (FULL SCAN) OF 'EVENT_NA_TIME_ETYPE' (NON-UNIQ
UE) (Cost=12878 Card=2284254 Bytes=50253588)
4/3
Elapsed: 00:00:09.70
Execution Plan
0 SELECT STATEMENT Optimizer=CHOOSE (Cost=6596 Card=9316 Bytes
=204952)
1 0 SORT (UNIQUE) (Cost=6596 Card=9316 Bytes=204952)
2 1 INDEX (FULL SCAN) OF 'EVENT_NA_TIME_ETYPE' (NON-UNIQ
UE) (Cost=11696 Card=2409400 Bytes=53006800)
Statistics
0 recursive calls
0 db block gets
11933 consistent gets
9676 physical reads
724 redo size
467 bytes sent via SQL*Net to client
503 bytes received via SQL*Net from client
2 SQL*Net roundtrips to/from client
1 sorts (memory)
0 sorts (disk)
3 rows processed
4/4
Elapsed: 00:00:17.99
Execution Plan
0 SELECT STATEMENT Optimizer=CHOOSE (Cost=6681 Card=9421 Bytes
=207262)
1 0 SORT (UNIQUE) (Cost=6681 Card=9421 Bytes=207262)
2 1 INDEX (FULL SCAN) OF 'EVENT_NA_TIME_ETYPE' (NON-UNIQ
UE) (Cost=12110 Card=2433800 Bytes=53543600)
Statistics
0 recursive calls
0 db block gets
12279 consistent gets
9423 physical reads
2608 redo size
467 bytes sent via SQL*Net to client
503 bytes received via SQL*Net from client
2 SQL*Net roundtrips to/from client
1 sorts (memory)
0 sorts (disk)
3 rows processed
SQL> select index_name,clustering_factor,blevel,leaf_blocks,distinct_keys from u ser_indexes where index_name like 'EVENT%';
INDEX_NAME CLUSTERING_FACTOR BLEVEL LEAF_BLOCKS DISTINCT_KEYS
EVENT_NA_TIME_ETYPE 2393170 2 12108 2395545
EVENT_PK 32640 2 5313 2286158
EVENT_TIME_NDX 35673 2 7075 2394055

Strange IMAQ Error Message: "ni: A frame has been dropped and the acquisition has been canceled."

Hello,
I am getting a strange error trying to use the NI PCIe-1427 with the MATLAB image acquisition toolbox configured with continuous acquisition. After about 5 minutes of acquisition, I get the error below:
??? ni: A frame has been dropped and the acquisition has been canceled.
Does anyone have any clues as to why I am getting this error / where I can find out what causes it? I need to acquire several hours worth of data and this error completely aborts my acquisition.
--Y

Hello,
Turns out that I found the problem. I had a slow memory allocation in my MATLAB code and this delay allowed too many frames to be accumulated in memory. I still do not know the source of the exact text of the error, but upon removing the slow memory allocation the error no longer occurs. I believe that it may have resulted from a buffer overrun of some sort in the underlying driver.
Given that this no longer poses a problem for me, I will not pursue it further.
Thank you for your help!

Drop and recreate table in stored procedure

Hi all
When creating tables using Transact-SQL scripts, I have always preferred to drop the table if it exists and then create it explicitly using CREATE TABLE. For two reasons:
1) It does not matter if it is the first time the SP is run ie. if I create the table manually in the first instance and just use TRUNCATE TABLE it could fail if the table is deleted
2) I have control over the data types of the table fields
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Microsoft Website
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Thanks Ronen
Please see my second post immediately before your reply.
Given that I need to store the data output in a physical table for use in QlikView, would you suggest truncating the table each time the SP runs? And then having a script that handles both dropping and creating the physical table, and also creating
the SP?
>> QlikView
QlikView is an Israeli company, right?
In any case I am not familiar with QlikView's application, therefore I can only give you general information, based on assumptions regarding the application, and facts regarding the SQL Server.
>> for use in QlikView
I assume that external application use specific database structure (table
structure) and it is change only in rare situations (for example CMS interface might change the tables if and when a module s update/install). In this case there is no need to drop the table and recreate it and TRUNCATE is the solution.
>> would you suggest truncating the table each time the SP runs
I am sorry but i cant recommend on TRUNCATE a table each time you execute SP, without know the exact reason for this logic. It sound to me, at this point of time (with the information that we have), that this
is very bad logic (application architecture). As I wrote above, basing your application on TRUNCATING the table each time mean that you have problems with multi users. Thins about 2 people that try to execute the same SP at almost the same time. Think about
locking in the SQL Server and bad data (one truncate while the other already inserted the new data and get no rows, if there is no locking).
But TRUNCATE is much better in this case probably then DROP and DELETE, since it is faster, and locking will be shorter (hopefully the application use the correct locking). There are other reasons why TRUNCATE is better, and other people already mentioned
most of them, but time in this scenario might be critical.
>> having a script that handles both dropping and creating the physical table, and also creating the SP?
I do not undestand what is this second step. we said that you truncate the table, so why do you need to
dropping and creating the physical table and who
creating the SP?
Are you meaning that the application create the tables and SP?
There are lot of application that during installation create the database structure. is this what you mean?
Ronen Ariely
[Personal Site] [Blog] [Facebook]

I need to know the right tools and java technology

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if you have a pointer to do it please let me know.... I'm very appreciate all your response...
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Start with Tomcat, which has the virtue of being free. Try some JSPs and servlets.
Use Applets to do client side presentation only if you must; Applets create an installation overhead on end-users, and some of them can't cope, while others may not have the necessary installation permissions on their office machines. They are pretty rarely needed, IMNSHO, most client-side behaviour is better handled with html and JavaScript.

Macbook Pro 15in Unibody Wi-Fi Drop and Stay Off / Total System Freeze

Hi.
Up until about two weeks ago I had no issues with my mac. Then I installed Lion and about two days later the following occurred:
Macbook Pro 15in Unibody - drops wifi connection with numerous routers and different locations. I turn Airport Utility off and it won't ever turn back on. Restart is the only option... Alternatively the mac will sometimes just freeze and I can't move the cursor or type at all. Booted into BOOTCAMP partition and that freezes as well.
So, now I have bought a new Solid State Drive and done a fresh install of Snow Leopard. About 5 seconds in and it froze again - so I restarted - and about 20 mins later the Airport Utility did the same issue, dropped the wifi and wouldn't turn back on after I turn it off.
Reset PRAM, Airport Utility did the same again. So far, touch wood, only the one freeze since the new HHD and PRAM reset...
ANY IDEAS AT ALL WHAT THE HECK THIS CAN BE? It is SO annoying I have been scouting the net but can't see an obvious solution. I have however been shocked at sooooo many cases similar to this with the Macbooks...
Thanks guys

Yes it will work just fine. I sell and set them up quite a bit with both PC's and Macs.
All N routers at the moment are all based on draft N protocol, even Apple's own Airport routers. So the Belkin N+ will work at N speeds if you set it to N mode only. Ofcourse for broad compatibility with all sorts of WiFi devices it is best to leave it in mixed mode.
For some background, i have used all sorts of makes of routers from Compaq/TrendNet (favourite)/Microsoft/Netgear (current favourite)/Dlink...and so on over the years, NOT any issues.
Apple's Airport extreme base stations (which are still draft N) aren't any more compatible than a Netgear or Belkin N router.

I am feeling so ripped off right now. I have wanted a Mac for years and believed the hype about it's stability and I have had more trouble with this Imac 2011 than I have ever had with a pc. It locks up with several software products from APP store.

I am feeling so ripped off right now. I have wanted a Mac for years and believed the hype about it's stability and I have had more trouble with this Imac 2011 than I have ever had with a pc. It locks up with several software products from APP store. I have already had to have a technician to look at it and really couldn't figure out what the deal was. I was told that the APP store software should give me no problems but the truth is that it locks up on the software. This machine is only 4 weeks old and I am using 37 g on a 1 T hard drive. There is no reason for it to be locking up. Also, when I try to use the help program, it always tells me that I am not connected to the internet even though I have used both the mail program and the browser with no problem just before that. I successfully used the help program on my pc lots of times. I did not need a $2000. plus machine to just get email. I just wanted to unload on somebody that might understand my pain and after checking out this site...I think there is a few of you out there.

I was told that the APP store software should give me no problems but the truth is that it locks up on the software.
The apps downloaded from the Mac App Store are written by third party developers, not Apple. If you have problems with those apps you need to visit the support area for their websites. Launch the App Store, locate the app name. You should see a support link.
when I try to use the help program, it always tells me that I am not connected to the internet even though I have used both the mail program and the browser with no problem just before that
Go to ~/Library/Preferences. Move the com.apple.helpviewer.plist file from the Preferences folder to the Trash. Restart your Mac, try the Help menu.
If you need help finding that file, hold down the Finder icon in the Dock then click: New Finder Window. From the menu bar top of your screen click: Go > Go to Folder. Type this in exactly as you see it here: ~/Library/Preferences/com.apple.helpviewer.plist That will take you right to that file.
(.plist) files stores information about a particular app or in this case, the Help viewer. Often times deleting the .plist file resolves the issue.
It's fine to "unload"... we understand that you expect your iMac to be stable but there are times when things go awry. That's why we have these forums so that you can you get help.
You may want to read up on how to repair the disk if necessary or reintsall Lion > OS X Lion: About Lion Recovery
Apple - Find Out How - Mac Basics
How to "switch" from PC to Mac > Apple - Support - Switch 101
I'm sorry you feel, "ripped off", but you are using the world's most advanced operating system and it may take some time to adjust to a new OS. http://developer.apple.com/technologies/mac/

About my voltage drops and Vitru Technology

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