swamped mail relays - suggestions

[Greg Matthews]

On Wed, 2005-05-18 at 10:28 +0200, Steen, Glenn wrote:
> > Ok, that's good then.
> > And you might well be right that 2x10K-file-directories might be the
> > problem (Not perhaps for MS as much as the actual MTA)... Have you
> > turned off atime updating too?
> >
> > -- Glenn
>
> ... And perhaps try getting rid of ext3 journal updating too (as
> suggested by David), by "reverting" to ext2.

These seem like good suggestions - I've implemented them on one of the
relays to compare performance. The load is down at the moment so too
early to tell the effect.

Incidentally, I'm still seeing await numbers (from iostat) up to
400-500ms even when lightly loaded so perhaps my interpretation of the
figures is off.

GREG

>
> -- Glenn

--
Greg Matthews           01491 692445
Head of UNIX/Linux, iTSS Wallingford

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