improving concurrency/performance (fwd)
Sergio Devojno Bruder
bruder at haxent.com.br
Wed Nov 9 12:13:31 EST 2005
John Madden wrote:
>>>This guy is having a problem with cyrus-imap and ext3 - when multiple
>>>processes are attempting to write to the one filesystem (but not the one
>>>file), performance drops to next to nothing when only five processes are
>>>writing. An strace shows most of the time is being spent in fdatasync
> Actually, the thread just got off topic quickly -- I'm running this on reiserfs,
> not ext3. ...And I've got it mounted with data=writeback, too. But thanks for
> the info, Andrew.
I'll bet that the fakesync preload library will make diference for you.
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