From owner-freebsd-net Wed Oct 27 8:25:29 1999 Delivered-To: freebsd-net@freebsd.org Received: from khavrinen.lcs.mit.edu (khavrinen.lcs.mit.edu [18.24.4.193]) by hub.freebsd.org (Postfix) with ESMTP id 3FB5914FFE for ; Wed, 27 Oct 1999 08:25:25 -0700 (PDT) (envelope-from wollman@khavrinen.lcs.mit.edu) Received: (from wollman@localhost) by khavrinen.lcs.mit.edu (8.9.3/8.9.3) id LAA87666; Wed, 27 Oct 1999 11:25:22 -0400 (EDT) (envelope-from wollman) Date: Wed, 27 Oct 1999 11:25:22 -0400 (EDT) From: Garrett Wollman Message-Id: <199910271525.LAA87666@khavrinen.lcs.mit.edu> To: "Craig Critchley" Cc: "Garrett Wollman" , Subject: Re: FTP Net Performance In-Reply-To: <1f6601bf200e$c8e476b0$0201010a@fuzzer.com> References: <1df701bf1f84$32751020$0201010a@fuzzer.com> <199910261606.MAA83232@khavrinen.lcs.mit.edu> <1f6601bf200e$c8e476b0$0201010a@fuzzer.com> Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org < said: > Looking at netstat -i, I see that I'm getting Oerrs of about 15% of Opkts, > but no Ierrs. There is an inconsequential number of collisions. Perhaps > the error rate is to blame for the problem. What sorts of things do these > errors represent? TCP performance is going to suck with that level of packet loss. TCP only works well with less than about 1% packet loss; if you're losing 15%, that explains what's going on. -GAWollman -- Garrett A. Wollman | O Siem / We are all family / O Siem / We're all the same wollman@lcs.mit.edu | O Siem / The fires of freedom Opinions not those of| Dance in the burning flame MIT, LCS, CRS, or NSA| - Susan Aglukark and Chad Irschick To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message