From owner-freebsd-hackers Wed Dec 4 01:47:12 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id BAA21355 for hackers-outgoing; Wed, 4 Dec 1996 01:47:12 -0800 (PST) Received: from skye.hut.fi (vode@skye.hut.fi [130.233.224.74]) by freefall.freebsd.org (8.7.5/8.7.3) with ESMTP id BAA21350 for ; Wed, 4 Dec 1996 01:47:09 -0800 (PST) Received: (from vode@localhost) by skye.hut.fi (8.8.3/8.7.3) id LAA19406; Wed, 4 Dec 1996 11:47:00 +0200 To: "David S. Miller" cc: hackers@freebsd.org Subject: Re: TCP/IP bandwidth bragging References: From: Kai Vorma Date: 04 Dec 1996 11:47:00 +0200 In-Reply-To: "David S. Miller"'s message of 3 Dec 1996 06:28:37 +0200 Message-ID: Lines: 33 X-Mailer: Gnus v5.3/Emacs 19.33 Sender: owner-hackers@freebsd.org X-Loop: FreeBSD.org Precedence: bulk "David S. Miller" writes: > ---------------------------------------------//// > Yow! 11.26 MB/s remote host TCP bandwidth & //// > 199 usec remote TCP latency over 100Mb/s //// > ethernet. Beat that! //// > -----------------------------------------////__________ o > David S. Miller, davem@caip.rutgers.edu /_____________/ / // /_/ >< Ok, how about this? --------------------------------------------------------------------------- cactus-18 - 11:36 - ~ > ttcp -s -t -l 65536 cactus-24-s ttcp-t: buflen=65536, nbuf=2048, align=16384/0, port=5001 tcp -> cactus-24-s ttcp-t: socket ttcp-t: connect ttcp-t: 134217728 bytes in 4.30 real seconds = 30468.04 KB/sec +++ ttcp-t: 2048 I/O calls, msec/call = 2.15, calls/sec = 476.06 ttcp-t: 0.1user 2.3sys 0:04real 58% 0i+9d 176maxrss 0+16pf 939+1022csw 0.120u 2.410s 0:04.32 58.5% 0+9k 0+0io 0pf+0w --------------------------------------------------------------------------- 30 MB/s remote host TCP bandwidth :-) The machine is dirty old IBM SP2 with wide nodes (similar to RS/6000 590 which appeared in 1993, I think) and HPS2 switch. Okay, the HPS2 switch is quite a different animal than ethernet, but you asked.. :-) ..vode