Date: Wed, 13 Oct 1999 14:28:58 +0200 From: Andre Oppermann <oppermann@pipeline.ch> To: Brad Knowles <blk@skynet.be> Cc: "Jonathan M. Bresler" <jmb@hub.freebsd.org>, scrappy@hub.org, nate@mt.sri.com, current@FreeBSD.ORG Subject: Re: People getting automatically unsub'ed from -arch Message-ID: <38047B0A.CC0C61BD@pipeline.ch> References: <19991012142522.57A98152AF@hub.freebsd.org> <38038AA5.45796B87@pipeline.ch> <v04205504b4293cb18531@[195.238.21.204]> <380395E7.2D38E200@pipeline.ch> <v04205500b42951a335e4@[195.238.21.204]>
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Brad Knowles wrote: > > At 10:11 PM +0200 1999/10/12, Andre Oppermann wrote: > > They must be crazy to run a several million recipients > > mailing list with sendmail... > > You don't know all the hacks that they made to sendmail to make > it perform at previously unheard of levels. ;-) Preciously unheard levels for sendmail? Who want's spend weeks or days of sendmail tuning to get a peak performace of x when it takes ten minutes to download and install qmail or postfix which delivers that as sustained performance?? > If you want to see some of the ideas that I got from them (and > others), take a look at the paper I presented at SANE'98 entitled > "Sendmail Performance Tuning for Large Systems" at > <http://www.shub-internet.org/brad/papers/sendmail-tuning/>. Nice paper! Most of the suggestions are already realized in qmail and postfix. The best is on page three, "handle at least tens of thousands messages per day per server"... About a year ago I tested qmail's performace with two old 486DX100/16MB/2GBIDE and 10BaseT ethernet. Guess what I was able to pump through them? 300'000 unique messages of about 3KB in 24 hours. Guess what my current production server can handle a day (PII-350/256MB/54GBSCSIRAID0+1)? About 2.5 million (too bad I don't have a T3). These numbers include the local deliveries to the maildir. > There > are a number of additional enhancements that they made that I still > can't talk about, however. As long as these additional performance enhancements are not public available I don't care. -- Andre Oppermann CEO / Geschaeftsfuehrer Internet Business Solutions Ltd. (AG) Hardstrasse 235, 8005 Zurich, Switzerland Fon +41 1 277 75 75 / Fax +41 1 277 75 77 http://www.pipeline.ch ibs@pipeline.ch To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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