From owner-freebsd-hackers Sat Mar 4 12:34:47 2000 Delivered-To: freebsd-hackers@freebsd.org Received: from mimer.webgiro.com (mimer.webgiro.com [212.209.29.5]) by hub.freebsd.org (Postfix) with ESMTP id 35F7D37B88C for ; Sat, 4 Mar 2000 12:34:35 -0800 (PST) (envelope-from abial@webgiro.com) Received: by mimer.webgiro.com (Postfix, from userid 66) id 98D7A2DC07; Sat, 4 Mar 2000 21:39:14 +0100 (CET) Received: by mx.webgiro.com (Postfix, from userid 1001) id 000D67811; Sat, 4 Mar 2000 21:30:43 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by mx.webgiro.com (Postfix) with ESMTP id EF73210E16; Sat, 4 Mar 2000 21:30:43 +0100 (CET) Date: Sat, 4 Mar 2000 21:30:43 +0100 (CET) From: Andrzej Bialecki To: Paul Robinson Cc: hackers@freebsd.org Subject: Re: Tuning TCP/IP Performance In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Sat, 4 Mar 2000, Paul Robinson wrote: > Hi, > > I've been trying to get TCP/IP performance as fast as possible by playing > around with sysctl (playing in the net.inet area) and so on, and was > wondering if there were any comprehensive resources on this that I've > missed. Whenever I do a sysctl -d -a to get a list of descriptions, I get > the following on 3.2-RELEASE: > > sysctl: sysctl name -1 1024 2: No such file or directory Retrieval of descriptions is not implemented yet. I'm afraid you'll need to resort to grepping through the source... > > Any idea as to what's going on here? > > Also, I seem to remember hearing about a method used on SunOS to send the > first four bytes of the data payload back with the SYN ACK which gives the > appearance of improved performance on benchmarks. Does anybody know as to > whether this is possible under any version of FreeBSD? I'll move to 4.0 if > I have to. :) There was a recent discussion (about a month ago) on -current about delayed ACKs. It's in the archives. Andrzej Bialecki // WebGiro AB, Sweden (http://www.webgiro.com) // ------------------------------------------------------------------- // ------ FreeBSD: The Power to Serve. http://www.freebsd.org -------- // --- Small & Embedded FreeBSD: http://www.freebsd.org/~picobsd/ ---- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message