[Dovecot] imap daemon consuming all the cpu (with patch to fix the problem)
Rui Lopes
rgl at ruilopes.com
Sat Aug 26 03:42:16 EEST 2006
Hi,
Rui Lopes wrote:
> I've tried to do a full text search on the inbox, it run fine, but the
> imap daemon started to eat all the CPU until I closed the email client.
>
> I'm running dovecot 1.0.rc7 [using kqueue] on FreeBSD 6.1.
>
> ktrace shows this pattern over and over (its seems to be looping):
>
> 49021 imap CALL kevent(0x4,0,0,0x80df000,0x5,0xbfbfe988)
> 49021 imap RET kevent 1
> 49021 imap CALL gettimeofday(0x80d0b00,0x80d0b08)
> 49021 imap RET gettimeofday 0
> 49021 imap CALL gettimeofday(0x80d0b00,0x80d0b08)
> 49021 imap RET gettimeofday 0
> 49021 imap CALL kevent(0x5,0,0,0xbfbfe930,0x1,0xbfbfe928)
> 49021 imap RET kevent 1
> 49021 imap CALL gettimeofday(0xbfbfe990,0)
> 49021 imap RET gettimeofday 0
>
> Maybe this is useless to track the cause... :(
>
> Unfortunately(?) I can't reproduce this again, because searches run OK.
I'm was able to reproduce this problem. The attached patch will fix the
problem.
Best regards,
Rui Lopes
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