Date: Thu, 13 Dec 2001 14:58:40 -0500 (EST) From: Garrett Wollman <wollman@khavrinen.lcs.mit.edu> To: bmah@FreeBSD.ORG Cc: net@FreeBSD.ORG Subject: Re: -current vs. -stable network performance Message-ID: <200112131958.fBDJwef85203@khavrinen.lcs.mit.edu> In-Reply-To: <200112131913.fBDJD8d38312@bmah.dyndns.org> References: <20011212224206.D35108@iguana.aciri.org> <200112131839.fBDId7v70103@apollo.backplane.com> <200112131913.fBDJD8d38312@bmah.dyndns.org>
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<<On Thu, 13 Dec 2001 11:13:08 -0800, "Bruce A. Mah" <bmah@FreeBSD.ORG> said: > 5-CURRENT (11/19): 9244 pps, 35.6 Mbps > 4-STABLE (late November): 21827 pps, 84 Mbps Doesn't seem right to me. wollman@cheyenne-mountain(6)$ ttcp -t -s -v -f m -b 131072 -u mintaka ttcp-t: buflen=8192, nbuf=2048, align=16384/0, port=5001, sockbufsize=131072 udp -> mintaka ttcp-t: socket ttcp-t: sndbuf ttcp-t: 16777216 bytes in 1.32 real seconds = 97.26 Mbit/sec +++ ttcp-t: 16777216 bytes in 0.10 CPU seconds = 1276.04 Mbit/cpu sec ttcp-t: 2094 I/O calls, msec/call = 0.64, calls/sec = 1591.09 ttcp-t: 0.0user 0.1sys 0:01real 7% 12i+184d 622maxrss 0+2pf 40+174csw ttcp-t: buffer address 0x8054000 These are 4-stable 1-GHz Pentium IIIs doing UDP on a switched 100-Mbit/s network with GA620Ts. For TCP, it's a little bit worse: wollman@cheyenne-mountain(7)$ ttcp -t -s -v -f m -b 131072 mintaka ttcp-t: buflen=8192, nbuf=2048, align=16384/0, port=5001, sockbufsize=131072 tcp -> mintaka ttcp-t: socket ttcp-t: sndbuf ttcp-t: connect ttcp-t: 16777216 bytes in 1.55 real seconds = 82.46 Mbit/sec +++ ttcp-t: 16777216 bytes in 0.11 CPU seconds = 1212.30 Mbit/cpu sec ttcp-t: 2048 I/O calls, msec/call = 0.78, calls/sec = 1319.33 ttcp-t: 0.0user 0.1sys 0:01real 6% 19i+294d 246maxrss 0+2pf 7033+35csw ttcp-t: buffer address 0x8054000 Results are actually a little bit better on my six-months-ago-current desktop (an 800-MHz Pentium III with i82559). These machines are all under some level of network load, so the results for a clean system should be even better. -GAWollman To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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