Magnus Bodin wrote:
>
> On Tue, 10 Aug 1999, Russell Nelson wrote:
>
> > Not AOL. Hotmail only uses it for outgoing. They tried using it for
> > incoming, but ran into qmail-send's single-threaded processing of
> > incoming email. I think they were the first party to ever run into
> > this problem, and I didn't realize what was happening when they asked.
>
> Exactly what does this mean? That qmail-send just processes one email
> at a time? And there is only one qmail-send that is master of and
> handling the queue (i.e. spawning off new qmail-(remote|local)s?
>
> And the only remedy for this is load-balancing to several servers I
> guess..
>
> Did they really had to give up qmail?
>
> /magnus
Hmm, qmail-spawn was never been a bottleneck in any load testing I did
except one case where qmail was set a low value for spawned
qmail-listen's: the symptoms were a backup behind spawn but the problem
was a combination of slow deliveries (NFS (I had modified lspawn so it
wouldn't throw up if it stat'ed an NFS mounted directory) and a too-low
value of spawnable children. I would very much like to understand the
circumstances under which qmail-spawn could become a bottleneck.
Russel, please let us know what the symptoms were.
--
Daemeon Reiydelle
Systems Engineer, Anthropomorphics Inc.
[EMAIL PROTECTED]
