Date: Fri, 3 Mar 1995 21:44:33 -0800 (PST) From: Poul-Henning Kamp <phk@ref.tfs.com> To: davidg@Root.COM Cc: CVS-commiters@freefall.cdrom.com, cvs-sys@freefall.cdrom.com Subject: Re: cvs commit: src/sys/net if_loop.c Message-ID: <199503040544.VAA13918@ref.tfs.com> In-Reply-To: <199503040514.VAA00190@corbin.Root.COM> from "David Greenman" at Mar 3, 95 09:14:09 pm
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> >> davidg 95/03/03 20:28:51 > >> > >> Modified: sys/net if_loop.c > >> Log: > >> Reduced loopback MTU to 16k to work around a miriad of problems with it > >> set near or above 32k (likely caused by 16bit signed word overflow). 16k > >> actually (surprizingly) has higher performance than other values I tested. > > > >Probably because it matches our default TCP-window, thus making it possible > >to return to user-space and effectively run in parallel. > > An interesting thought...but I think it's much more complicated than that. A very good candidate for "understatement of the year". The major part of the last year I have tried to get ATM to perform, and I have learned that unless you actually see it on the line, you shouldn't assume anything about what's in a packet. -- Poul-Henning Kamp <phk@login.dknet.dk> TRW Financial Systems, Inc. I am Pentium Of Borg. Division is Futile. You WILL be approximated.
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