Rakesh Tiwari <[EMAIL PROTECTED]> wrote:
>
> The problem is when i send a blast of mails say 150000 from both the
> boxes. The Qmail on the sun box takes ages to send while the Linux box
> does it in a giffy.
[...]
> One thing i saw was that during the mail blast the "iowait" on the sun
> box is huge. more than 50% at all times.
There's several possible contributing factors here. You installed from
source on the Sun box; did you apply Russell Nelson's big-todo patch to
qmail? If not, that could be slowing you down significantly.
How are you logging? If it's going to syslog, that could be slowing you
down significantly. Use multilog from Dan's daemontools package.
Also, Sun's filesystem is fairly slow when you are doing a lot of directory
scans.
A minor contributing factor could be the compiler you used; Sun's cc has been
shown to produce fairly bloated qmail binaries on this list in the past.
If none of the above are factors, you're probably running out of queue
disk bandwidth.
Charles
--
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Charles Cazabon <[EMAIL PROTECTED]>
GPL'ed software available at: http://www.qcc.sk.ca/~charlesc/software/
Any opinions expressed are just that -- my opinions.
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