From owner-freebsd-performance@FreeBSD.ORG Wed Dec 5 01:11:55 2007 Return-Path: Delivered-To: freebsd-performance@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 43AAE16A417 for ; Wed, 5 Dec 2007 01:11:55 +0000 (UTC) (envelope-from cryx-freebsd@h3q.com) Received: from mail.h3q.com (mail.h3q.com [213.73.89.199]) by mx1.freebsd.org (Postfix) with ESMTP id 861A813C468 for ; Wed, 5 Dec 2007 01:11:54 +0000 (UTC) (envelope-from cryx-freebsd@h3q.com) Received: (qmail 19255 invoked from network); 5 Dec 2007 01:11:53 -0000 Received: from unknown (HELO goa.local) (smtpsend@195.160.173.123) by mail.h3q.com with AES256-SHA encrypted SMTP; 5 Dec 2007 01:11:53 -0000 Message-ID: <4755FAD8.5030805@h3q.com> Date: Wed, 05 Dec 2007 02:11:52 +0100 From: Philipp Wuensche User-Agent: Thunderbird 2.0.0.9 (Macintosh/20071031) MIME-Version: 1.0 To: Bill Moran References: <4755ED57.6030603@h3q.com> <20071204195131.56cb1307.wmoran@collaborativefusion.com> In-Reply-To: <20071204195131.56cb1307.wmoran@collaborativefusion.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: "freebsd-performance@freebsd.org" Subject: Re: tuning for high connection rates X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 05 Dec 2007 01:11:55 -0000 Bill Moran wrote: > > Enable polling on the interface and see if that helps. See man polling. We tried polling already and it didn't help at all. As I understand it, and correct me if I'm wrong, polling helps against high interrupt rates but for that intel gigabit cards have interrupt moderation. We don't have a problem with interrupts (20% CPU) at the moment but with system (100% CPU) as you can see in the system monitoring graphs. Interrupts sometimes peak at, but usually are under, the 2k interrupts/sec limit. greetings, cryx