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Re: poor performance with Context Switch Storm at TPC-W. - Mailing list pgsql-hackers

From Jim C. Nasby
Subject Re: poor performance with Context Switch Storm at TPC-W.
Date
Msg-id 20060719153542.GT83250@pervasive.com
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In response to Re: poor performance with Context Switch Storm at TPC-W.  (Katsuhiko Okano <okano.katsuhiko@oss.ntt.co.jp>)
Responses Re: poor performance with Context Switch Storm at TPC-W.  (Katsuhiko Okano <okano.katsuhiko@oss.ntt.co.jp>)
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On Fri, Jul 14, 2006 at 02:58:36PM +0900, Katsuhiko Okano wrote:
> NOT occurrence of CSStorm. The value of WIPS was about 400.
> (but the value of WIPS fell about to 320 at intervals of 4 to 6 minutes.)

If you haven't changed checkpoint timeout, this drop-off every 4-6
minutes indicates that you need to make the bgwriter more aggressive.
-- 
Jim C. Nasby, Sr. Engineering Consultant      jnasby@pervasive.com
Pervasive Software      http://pervasive.com    work: 512-231-6117
vcard: http://jim.nasby.net/pervasive.vcf       cell: 512-569-9461

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