[SGVLUG] Anyone know about Postfix on Linux?

[Chris Smith]

On 9/5/07, Stan Schwarz <stan at iron.gps.caltech.edu> wrote:
> I run the Earthquake Notification System here at the U.S.
> Geological Survey. I originally built the system to run on
> FreeBSD, since that's what I know. I have a Linux machine that I'm
> experimenting with, and the mail sending process is very slow.
> I adjusted in_flow_delay, but the process of inserting messages
> into the Postfix queue is still slow.
>
> I'm trying to achieve faster-than-a-speeding-spammer mail sends,
> since everyone wants to know about earthquakes right after they
> happen.
>
> Is there anyone here who has configured Postfix for speed?

I've done a wee bit, but I know people who've done more. There are a
few tricks one can do to improve speed. IIRC playing with sync
attributes helps as does the infamous noatime. What kind of rates are
you seeing? Have you tried profiling with oprofile?

-- 
Chris