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JaybeeSQL
Posting Yak Master
112 Posts |
 Posted - 2012-11-07 : 08:32:58
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| Hi all, We have a lightly-used OLTP system, split across 3 clusters, that is showing 6 sessions with wait times often in hundreds, or thousands of seconds. They are not causing performance complaints but ARE causing alerts to fire in our monitoring system (Idera). I would be grateful for any ideas to begin addressing the underlying issue, as well as rationalising the alerts (ie possibly by increasing the 'critical' point where an email is sent to 10,000secs).Many thanks,JB |
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jackv
Master Smack Fu Yak Hacker
2179 Posts |
Posted - 2012-11-07 : 09:46:33
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| 1)Try extracting the queries which are running at the time. This could give you some clues. Analyse the queries execution plans and see if there is an heavy CPU based activity. 2) Using a query over sys.dm_os_wait_stats check for : SOS_SCHEDULER_YIELD, THREADPOOL, CX_PACKET , usually related the CPUJack Vamvas--------------------http://www.sqlserver-dba.com |
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Session CPU wait times