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reduce resource waits on sql server without upgrading sql server


reduce resource waits on sql server without upgrading sql server

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SQListic
SQListic
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Hi Experts,

How to reduce resource waits on sql server without upgrading CPU??

Thanks,
Nihar
Eugene Elutin
Eugene Elutin
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It depends! Which exact waits types you are having problem with?
Are you sure that they are CPU dependent ones?

_____________________________________________
"The only true wisdom is in knowing you know nothing"
"O skol'ko nam otkrytiy chudnyh prevnosit microsofta duh!":-D
(So many miracle inventions provided by MS to us...)

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SQListic
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Select signal_wait_time_ms=sum(signal_wait_time_ms)

,'%signal (cpu) waits' = cast(100.0 * sum(signal_wait_time_ms) / sum (wait_time_ms) as numeric(20,2))

,resource_wait_time_ms=sum(wait_time_ms - signal_wait_time_ms)

,'%resource waits'= cast(100.0 * sum(wait_time_ms - signal_wait_time_ms) / sum (wait_time_ms) as numeric(20,2))

From sys.dm_os_wait_stats


-----------
output:


signal_wait_time_ms   ----2003819   
%signal (cpu) waits   ----- 0.05   
resource_wait_time_ms   ---- 3897150915
%resource waits ----- 99.95
Eugene Elutin
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Wait types?

_____________________________________________
"The only true wisdom is in knowing you know nothing"
"O skol'ko nam otkrytiy chudnyh prevnosit microsofta duh!":-D
(So many miracle inventions provided by MS to us...)

How to post your question to get the best and quick help
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/

And chapter 3 of http://www.simple-talk.com/books/sql-books/troubleshooting-sql-server-a-guide-for-the-accidental-dba/


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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