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 SQL 2008 CPU Load 100%

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Andy1805
Starting Member

2 Posts

Posted - 2011-07-26 : 02:27:51
Hi,
first please excuse my bad english
We have a strong server with two hexacore XEON CPUs and on it a hyper-v W2K8 R2 with sql 2008 r2 and sage office line evolution.Most time everything is fine, cpu load between 5 to 20 % and from one moment to the other the cpu load goes on all 4 cores (i gave the VM 4 cores and 16 gb RAM) to 100% and if i look in the task manager, it is only the SQL Server that is responsible for it.Then everything is very slow and the people cant work anymore till I reboot the VM.Do you have any idea, where I can search the problem? We reinstalled the VM two times and nothing changed.
Kindly regards
Andy

RickD
Slow But Sure Yak Herding Master

3608 Posts

Posted - 2011-07-26 : 04:48:55
Have a look at this, it may help:

http://www.hanselman.com/blog/VMPerformanceChecklistBeforeYouComplainThatYourVirtualMachineIsSlow.aspx

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Andy1805
Starting Member

2 Posts

Posted - 2011-07-26 : 08:03:47
Thx for that link. But I think the performance is ok. 95-99% of the working time everything is fine and only perhaps 20 min of 8.5 h business time the cpu load goes to 100%. But I will goes through the optimation advices, maybe it will help.
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RickD
Slow But Sure Yak Herding Master

3608 Posts

Posted - 2011-07-26 : 08:42:35
You might also want to look at http://stackoverflow.com/questions/149318/virtualized-sql-server-why-not and all the links in the replies.
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tkizer
Almighty SQL Goddess

38200 Posts

Posted - 2011-07-26 : 12:54:15
Sounds like you are missing indexes if you find that there are no other VM issues. Pretty simple to fix and actually identify. Have you looked at the missing indexes report, how about statistics, fragmentation, profiler trace?

Tara Kizer
Microsoft MVP for Windows Server System - SQL Server
http://weblogs.sqlteam.com/tarad/

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