Re: Huge CPU Wait spikes displayed in EM12c
From: Karl Arao <karlarao_at_gmail.com>
Date: Fri, 31 Aug 2012 09:26:59 -0500
Message-ID: <CACNsJnc0qCm7hs+PTPEPh_PzSqAMWAqyz792YLTSv9dUArh4UQ_at_mail.gmail.com>
CPU Wait is "unaccounted for DB Time" on high run queue or CPU intensive environments. This is similar to "unaccounted-for time" on 10046 trace which is a result of time spent of DB calls preempted (sitting the run queue wanting CPU but unable to get it). check out the AAS investigation updates here showing some screenshots http://goo.gl/77zaT
and here which shows what could possibly cause CPU wait http://goo.gl/331Ma
Date: Fri, 31 Aug 2012 09:26:59 -0500
Message-ID: <CACNsJnc0qCm7hs+PTPEPh_PzSqAMWAqyz792YLTSv9dUArh4UQ_at_mail.gmail.com>
CPU Wait is "unaccounted for DB Time" on high run queue or CPU intensive environments. This is similar to "unaccounted-for time" on 10046 trace which is a result of time spent of DB calls preempted (sitting the run queue wanting CPU but unable to get it). check out the AAS investigation updates here showing some screenshots http://goo.gl/77zaT
and here which shows what could possibly cause CPU wait http://goo.gl/331Ma
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Karl Arao
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Received on Fri Aug 31 2012 - 09:26:59 CDT