From owner-freebsd-stable Thu Dec 13 5: 3:57 2001 Delivered-To: freebsd-stable@freebsd.org Received: from verdi.nethelp.no (verdi.nethelp.no [158.36.41.162]) by hub.freebsd.org (Postfix) with SMTP id CE80D37B421 for ; Thu, 13 Dec 2001 05:03:53 -0800 (PST) Received: (qmail 32391 invoked by uid 1001); 13 Dec 2001 13:03:51 +0000 (GMT) To: thz@Lennartz-electronic.de Cc: stable@freebsd.org Subject: Re: TCP stack still hosed? From: sthaug@nethelp.no In-Reply-To: Your message of "Thu, 13 Dec 2001 13:42:44 +0100" References: <20011213134244.A380@mezcal.tue.le> X-Mailer: Mew version 1.05+ on Emacs 19.34.2 Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Date: Thu, 13 Dec 2001 14:03:51 +0100 Message-ID: <32389.1008248631@verdi.nethelp.no> Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG > repeated the tests with a normal ethernet card. I had to change the > test procedure, because of the 100Mbit ethernet sysinstall was masking > the results. So I did fetch ftp:// of the iso image, about 150MB. > > the result is different: > server 2001/12/13, client 2001/12/12: 6 MBps > server 2001/11/20, client 2001/12/12: 5.8 MBps > server 2001/11/20, client 2001/07/17: 7.2 MBps > > so here the differences are not that much. How close are these hosts? As far as I can remember, the TCP problem that was corrected related to behavior under packet loss. With two hosts running -STABLE connected with a switch I have no problem filling a 100 Mbps Ethernet pipe: mgmtserv2# ttcp -r ttcp-r: buflen=8192, nbuf=2048, align=16384/+0, port=5001 tcp ttcp-r: socket ttcp-r: accept from 195.18.128.227 ttcp-r: 134217728 bytes in 11.35 real seconds = 11543.38 KB/sec +++ ttcp-r: 91930 I/O calls, msec/call = 0.13, calls/sec = 8096.18 ttcp-r: 0.0user 0.4sys 0:11real 4% 15i+206d 244maxrss 0+1pf 91929+2csw 11544.62 * 8192 * 1538/1460 = 99.626 Mbps. Close enough :-) Steinar Haug, Nethelp consulting, sthaug@nethelp.no To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message