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Re: Postfix 2.4 patchlevel 05 available

From: Mark Martinec (Mark.Martinec+postfixijs.si)
Date: Wed Aug 01 2007 - 09:41:11 CDT


> Postfix stable release 2.4.5 fixes a one-bit typing error that
> slipped in during code cleanup for the Postfix 2.4.4 release,
> making the loopback TCP performance workaround ineffective.

> Loopback TCP performance workaround:
> Some systems exhibited poor SMTP and Milter performance with
> loopback (127.0.0.1) connections.

Perfect! I tried with postfix-current-2.5.20070731 and transfer
of a large mail body to a milter on a loopback interface is now
more than 50 times faster (38 MB/s).
Capture: http://www.ijs.si/~mark/tmp/dkim-pf-20070731.tcpdump.bz2

  Mark