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From: gillhaa@ghost.whirlpool.com (Andrew Gillham)
Newsgroups: comp.os.linux.networking,comp.unix.bsd.netbsd.misc,comp.unix.bsd.freebsd.misc
Subject: Re: TCP latency
Date: 13 Jul 1996 00:04:20 -0400
Organization: Whirlpool Corporation
Lines: 43
Message-ID: <4s7784$t9c@ghost.whirlpool.com>
References: <4paedl$4bm@engnews2.Eng.Sun.COM> <4rvmtf$ven@linux.cs.Helsinki.FI> <31E3D9E2.41C67EA6@dyson.iquest.net> <4s5bl2$qpg@linux.cs.helsinki.fi>
NNTP-Posting-Host: ghost.whirlpool.com
Xref: euryale.cc.adfa.oz.au comp.os.linux.networking:45025 comp.unix.bsd.netbsd.misc:4011 comp.unix.bsd.freebsd.misc:23406
Ok, since you guys _insist_ on crossposting to netbsd... :)
In article <4s5bl2$qpg@linux.cs.helsinki.fi>,
Linus Torvalds <torvalds@linux.cs.Helsinki.FI> wrote:
>In article <31E3D9E2.41C67EA6@dyson.iquest.net>,
>
>Ooohh.. "FreeBSD is faster over loopback, when compared to Linux over
>the wire". Film at 11.
>
> linux$ ./lat_tcp linux
> $Id: lat_tcp.c,v 1.2 1995/03/11 02:25:31 lm Exp $
> TCP latency using linux: 181 microseconds
shadow# ./lat_tcp shadow
$Id: lat_tcp.c,v 1.1 1994/11/18 08:49:48 lm Exp $
TCP latency using shadow: 164 microseconds
>And if you don't like latency numbers, what are your throughput numbers?
>(Btw, check your bcopy() speed first to see if the hardware really _is_
>comparable, see below)
>
> linux$ ./bw_tcp linux 50m
> $Id: bw_tcp.c,v 1.3 1995/06/21 21:02:49 lm Exp $
> Socket bandwidth using linux: 17.14 MB/sec
shadow# ./bw_tcp shadow 50m
$Id: bw_tcp.c,v 1.1 1994/11/18 08:49:48 lm Exp $
Socket bandwidth using shadow: 39.25 MB/sec
shadow# uname -srm
NetBSD 1.2_BETA i386
-Andrew
PS. Since the *original* flamebait didn't list the hardware,
I'll not list mine either. :)
--
-----------------------------------------------------------------
Andrew Gillham
gillham@whirlpool.com Click here: http://www.NetBSD.org
I speak for myself, not for my employer.