Date: Fri, 22 Sep 2006 11:38:50 +0400 From: Taras Savchuk <taras@elantech.ru> To: freebsd-stable@freebsd.org Cc: freebsd-current@freebsd.org, delphij@delphij.net Subject: Dovecot 1.0 rc7 on FreeBSD 6.1-RELEASE/i386 with kqueue eats much CPU Message-ID: <4513930A.9080401@elantech.ru>
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I have a problem with dovecot eating sometimes up to 90% CPU. While making such high cpu load, dovecot calls gettimeofday() more than 20000 times per second: mail2# cat k.dov.l.txt | grep CALL | grep gettimeofday | wc -l 1195552 mail2# head -n 1 k.dov.l.txt 20910 imap 0.000000 CALL gettimeofday(0x80c2c60,0x80c2c68) mail2# tail -n 1 k.dov.l.txt 20910 imap 51.826065 RET gettimeofday 0 Here is my kdump: http://www.elantech.ru/kdump-dovecot.txt.gz top shows high system load (~50%) and small user load (~0-5%). We discussed this problem in dovecot@ mailing list ( http://www.dovecot.org/list/dovecot/2006-September/016096.html ), and people from dovecot@ recomended me to send this problem also to freebsd-stable@ and freebsd-current@. Thanks for help in advance! -- С уважением, Савчук Тарас ООО "Элантек" : Аутсорсинг ИТ, WEB-разработка http://www.elantech.ru +7 (495) 589 68 81 +7 (926) 575 22 11
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