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SQL Server instance is taking 100% CPU and is very slow


SQL Server instance is taking 100% CPU and is very slow

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Mani-584606
Mani-584606
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Points: 2632 Visits: 1998
Hi,

SQL Server instance is taking 100% cpu. I tried to find the active sessions using sp_who2 'active' and I got one select statement in running. but when I see the cpuTime column for that, the value is 1063

I believe that query is taking very little CPU.

But why the SQL Server is taking 100% CPU? how to find what else is taking cpu?

Please advise.
anthony.green
anthony.green
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Points: 24960 Visits: 6519
Run Brad's DMV Starter Pack especially the CPU related DMVs against your instance, http://www.bradmcgehee.com/2010/07/free-sql-server-dmv-starter-pack/

Also read chapter 3 of the Accidental DBA guide, link in my signature below.



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Troubleshooting SQL Server: A Guide for the Accidental DBA - Jonathan Kehayias and Ted Krueger


GilaMonster
GilaMonster
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http://www.simple-talk.com/sql/performance/finding-the-causes-of-poor-performance-in-sql-server,-part-1/
http://www.simple-talk.com/sql/performance/finding-the-causes-of-poor-performance-in-sql-server,-part-2/

Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

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