Konrad Rzepecki:
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> W dniu 18.01.2012 10:29, Simone Ruffilli pisze:
> > Hello everyone,
> >
> > whenever I submit to my postfix server a mail having a massive (~15k)
> > recipient list, it takes forever to accept and start delivering it.
>
> I have similar problem, and I suspect you may also hit it. In my case I
> send ~10k-20k mails through sendmail wrapper. My problem is caused by
> fsync done on EVERY queued mail. It take on my servers (4 core AMD @
> ext4 @ LVM @ RAID10 @ 8disk) ~ 0.2-0.3s for each one. Sometimes it's
> even 0.6s! So simple mail queuing for 15k recipients can take 1 hour or
> more...
0.6s for fsync is awful. You need to use a better file system.
Wietse
