fsync() takes about 0.06 second ---makes Cyrus deliver slow

[Jure Pecar]

On Mon, 9 Sep 2002 16:00:28 -0400 
Su Li <sli at rim.net> wrote:

> I wonder is there any way to may fsync() faster? If not is there any way
> to call fsync less often? Will using a fast hard disk help? Or will move
> the mail store -- /spool/imap/user to a database help?

For what i know, fsync() speed is directly poportional to the speed of your
disks (avg. access time more than r/w speed). The most you can do is to keep
different cyrus files on differet physical disks, possibly on differnet raid
arrays. Remember, mail means lots of fsync()s means disk being the
bottleneck. If you really need the performance, check some of the solid
state disks available around the net. 


--


Jure Pecar
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