Date: Fri, 30 Nov 2001 17:19:46 -0500 (EST) From: Kenneth Wayne Culver <culverk@wam.umd.edu> To: "James C. Durham" <durham@w2xo.pgh.pa.us> Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: FreeBSD performing worse than Linux? Message-ID: <Pine.GSO.4.21.0111301718460.9908-100000@rac4.wam.umd.edu> In-Reply-To: <Pine.GSO.4.21.0111301634001.9908-100000@rac4.wam.umd.edu>
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As a side note, I turned off delayed ack on both machines, and had the sendsize and recvsize set at 32768... I'm talking about wirespeed too, not measured incredibly accurately, but just measured using one of the windowmaker dockapps :-D Ken On Fri, 30 Nov 2001, Kenneth Wayne Culver wrote: > Wierd, on my Dual PII 300 I'm getting around 8MB/sec to an 800MHz > athlon. The athlon is using a 3com 905b I believe, and the PII is using an > intel fxp type card. Granted this is from my living room to my bedroom so > that may be part of what I see. Also, the Dual PII is running -STABLE as > of a week ago, and the Athlon is running -CURRENT as of about a week ago. > > Ken > > On Fri, 30 Nov 2001, James C. Durham wrote: > > > (snip...a large number of postings regarding slow performance by 4.x > > kernels with TCP/IP) > > > > A friend who works for a local university and I tried moving large > > files using variouis OS'es and hardware. These are FTP transfers > > with file sizes from 100 to 300 megabytes.. > > > > The conclusion we arrived at was that the TCP performance of FreeBSD > > 4.x and Linux is aproximately the same and that processor speed > > makes the most difference. In one case, a fast laptop with 16 bit > > pcmcia NIC did poorly. > > > > Moving large files on 100mb/s ethernet backbones gave the folowing > > results... > > > > Dual 800 mhz PIII processors with Linux 6.1: > > 10mB/s. > > > > Sunblade 100's: > > 10mB/s. > > > > Single 1.4ghz processors (noname box)with 3C905 NICS, > > FreeBSD-stable (June 2001).: > > 9.5 mB/s. > > > > In the case wehere we had only one machine of a type, we > > used the dual 800mhz machines as a "sink"...with the following > > results (this is probably questionable): > > > > Dual 333 Linux 5.1 5mB/s > > > > Pentium 350 III with 3C905 NIC, Linux 5.1: > > 2mB/sec > > > > K6-2 400 with smc NIC, Linux 5.1: > > 2.8mB/sec > > > > Dell 500mhz PowerEdge with 4.3 with 3C905 NIC to HP Netserver PII 266, > > both running 4.3-RELEASE: > > 3.0 mB/sec. > > > > Dell 500mhz PowerEdge with 4.3 to Dell 850mhz laptop running > > 4.4 with Dlink PCMCIA ethernet card: > > 1.0 mB/sec. (caused by pcmcia NIC?) > > > > PIIMMX 200mhz box running 4.4-Relese with 3C905 to same Dell Laptop: > > 500kB/sec. > > > > Unfortunately, we didn't have any 7.x Linux available or 3.X FreeBSD. > > > > FWIW... > > > > Jim Durham > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > > with "unsubscribe freebsd-hackers" in the body of the message > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-hackers" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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