Messages in this thread | | | Subject | Re: SD still better than CFS for 3d ?(was Re: 2.6.23-rc1) | From | Peter Zijlstra <> | Date | Tue, 31 Jul 2007 08:31:01 +0200 |
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On Tue, 2007-07-31 at 01:46 +0200, Kasper Sandberg wrote:
> could perhaps be filesystem related, i have my maildir(extremely large) > on reiserfs, and /home on xfs. what my mail client will do is download > mail, spamasassin it(loading database from home), then it will put to > imap server placing it on reiserfs, and then a "local" copy in my home.
Ooh, do you perchance have PREEMPT_BKL=y?
If so, try on another filesystem than reiserfs (or disable PREEMPT_BKL, but that is obviously the lesser of the two choices).
Ingo traced a 1+ second latency at my end to BKL priority inversion between tty and reiserfs.
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