From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S270350AbTHBTTx (ORCPT ); Sat, 2 Aug 2003 15:19:53 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S270342AbTHBTTx (ORCPT ); Sat, 2 Aug 2003 15:19:53 -0400 Received: from willy.net1.nerim.net ([62.212.114.60]:39442 "EHLO www.home.local") by vger.kernel.org with ESMTP id S270524AbTHBTOi (ORCPT ); Sat, 2 Aug 2003 15:14:38 -0400 Date: Sat, 2 Aug 2003 21:14:33 +0200 From: Willy Tarreau To: Martin Josefsson Cc: Willy Tarreau , linux-kernel@vger.kernel.org Subject: Re: Linux 2.4.22-pre10 Message-ID: <20030802191433.GD13525@alpha.home.local> References: <20030801224753.GA912@alpha.home.local> <1059817370.1868.5.camel@tux.rsn.bth.se> <20030802181007.GB13525@alpha.home.local> <1059848925.1869.22.camel@tux.rsn.bth.se> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1059848925.1869.22.camel@tux.rsn.bth.se> User-Agent: Mutt/1.4i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Aug 02, 2003 at 08:28:46PM +0200, Martin Josefsson wrote: > Uhm, my tests have shown it to be very fast and efficient. But I didn't > look to see if all packets got through to the logfile. But getting it to > write logs at ~35MB/s wasn't a problem. I clearly didn't reach these numbers, I used LOGEMU, and while you're at it, I must say that when I speak about 1500/s, it's about logs _written_ down. The firewall can still can process 5k sessions/s, but looses many logs (3.5k every second). When I read the LOGEMU code, I had the impression that it was given more as a proof of concept than anything else. Because there are many many many "fprintf(of, something_trivial_enough_to_support_memcpy)". > Did you specify --ulog-qthreshold 50 ? > and did you specify --ulog-cprange at all? if you don't it will copy the > entire packet to userspace. I copy 64 bytes to userspace and that's more > than enough to log everything needed. honnestly, i't 6 months old in my head, and I don't remember with which parameters I played. But I'd happily restart a bench if you have some tuning advices (provided that they are compatible with basic production constraints, such as log rotation, and a few CPU left for monitoring processes :-)) I cannot promise to to it within a few days though. Cheers, Willy