Date: Fri, 30 Nov 2001 19:32:18 -0500 (EST) From: "James C. Durham" <durham@w2xo.pgh.pa.us> To: freebsd-hackers@freebsd.org Subject: Re: FreeBSD performing worse than Linux? Message-ID: <200112010032.fB10WIp55898@w2xo.pgh.pa.us>
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(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
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