Date: Thu, 31 Dec 1998 18:05:56 -0800 (PST) From: "Jonathan M. Bresler" <jmb@FreeBSD.ORG> To: dillon@apollo.backplane.com Cc: grog@lemis.com, donegan@quick.net, current@FreeBSD.ORG Subject: Re: sendmail throughput (was: HEADS UP: Postfix is coming. new uid, gid required.) Message-ID: <199901010205.SAA19303@hub.freebsd.org> In-Reply-To: <199901010122.RAA05674@apollo.backplane.com> (message from Matthew Dillon on Thu, 31 Dec 1998 17:22:22 -0800 (PST)) References: <199901010122.RAA05674@apollo.backplane.com>
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> Date: Thu, 31 Dec 1998 17:22:22 -0800 (PST)
> From: Matthew Dillon <dillon@apollo.backplane.com>
>
> This is not a good argument for replacing sendmail, considering the fact
> that 100,000 messages an hour is sufficient to handle the needs of a
> userbase of 100,000 users or more.
1 message per user per hour.
please read the paper. rob kolstad wrote it after contending
with mail lists that we taking hours to deliver a single message
to all the subscribers.
FreeBSD mail list subscribers seem to want instantaneous
delivery...sometimes 30 minutes is just too long for some
poeple ;) postfix delivers the mail to more people faster.
thats what they awnt. that make me happy ;) and the queue
directories are smaller (without loading up the queues on the
mail-relays...thats just shifting the problem elsewhere and
hiding it so i cant tell if there is a big backlog or not.)
with postfix hte need for the mail-relays has decreased
dramtically.
> BEST has two incoming mail servers, running sendmail, to support it's
> 30,000+ users and the mail rate is only 150 messages a minute (per server)
> at peak.
>
> BEST's outgoing mailing lists machine is our busiest mail box. The
> outgoing mail rate, doing the mailing lists for all best users (a few
> thousand mailing lists) is, at peak, around 1000 messages a minute at
> peak (around 60,000 an hour).
current has 1411 subscribers. each wonts to get the message
first! if we do 100 messages a day that's only 141,100
messages, nothing....but to deliver them all in 3 minutes boosts
the effective rate to 2.8 million message per hour.
i am not saying that postfix is delivering that rate. the
closer the better.
hub is currently delivering ~100k messages per hour (400 - 430
in 15 seconds reporting periods) for the last 75 seconds. then
it drops to nearly nothing. that message has made it out. i
would have preferred to do it in 15 seconds. that was just one
message
jmb
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