From owner-freebsd-stable@FreeBSD.ORG Sat Oct 6 16:21:16 2007 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 018A816A417 for ; Sat, 6 Oct 2007 16:21:16 +0000 (UTC) (envelope-from almarrie@gmail.com) Received: from nf-out-0910.google.com (nf-out-0910.google.com [64.233.182.191]) by mx1.freebsd.org (Postfix) with ESMTP id 8070513C4C4 for ; Sat, 6 Oct 2007 16:21:15 +0000 (UTC) (envelope-from almarrie@gmail.com) Received: by nf-out-0910.google.com with SMTP id b2so666057nfb for ; Sat, 06 Oct 2007 09:21:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; bh=JG56/a4qtwoOjX+LZD6R29B29FmKXYHg/4WqDSWwyRQ=; b=rmtDmQnwT4WhsbojLhxeKMB1u3rM07Pmg7nXtZ6u3PRJQNmGaZgdprRx8sltZJkWwqL90i9uRaQS739nNcFOS2XXalsDhl0IBI6k6VQWmC+Ds6OMX8XdmFO8DdKguMnF2QVuyekoDYfCbMu9VOIExPtd1U3F/GFTt6YnD9d1oe0= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=jFV2GHn9a4IJz9bQa5doagR5t9pE3O0XEU9bHyNVgqnDpIqAPxEMb7kdH7F8Y4osu5RhYNg5+2AnWUc6T/oSlCD3Y7+Ko0+yECBjGufhNm0KfwM/YvTJWoi7rHyuy0P2EtJZeiqTtUfNdLqhY4I6uCTVqMISyNWj/8XOhaC8L6M= Received: by 10.86.72.15 with SMTP id u15mr3471988fga.1191687673994; Sat, 06 Oct 2007 09:21:13 -0700 (PDT) Received: by 10.86.2.1 with HTTP; Sat, 6 Oct 2007 09:21:13 -0700 (PDT) Message-ID: <499c70c0710060921l774e2570se1b9ead6482291cc@mail.gmail.com> Date: Sat, 6 Oct 2007 19:21:13 +0300 From: "Abdullah Ibn Hamad Al-Marri" To: "Doug Barton" In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <02d401c805cb$abf59ec0$0c00a8c0@Artem> Cc: Artem Kuchin , freebsd-stable@freebsd.org Subject: Re: Quation about HZ kernel option X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 06 Oct 2007 16:21:16 -0000 On 10/5/07, Doug Barton wrote: > On Wed, 3 Oct 2007, Artem Kuchin wrote: > > > Hello! > > > > What value of HZ option would you recommend for a hosting (web) server > > with a lot of processes (about 900) and polling off (as decided from > > previous discussion polling is useless in this situation). > > Is this an SMP system? If so you'd probably be well served by testing the > latest 7.0-current (which will soon be a beta for 7.0-release) with the > ULE scheduler. That's likely to have more benefit for you than changing > HZ, although setting it to 100 is probably going to be better than 1000 > for reasons others have already mentioned. > > hth, > > Doug > > -- > > This .signature sanitized for your protection Hello, Thank you for the nice discussion guys, I have server with dual xeon cpus, and C2D I switched kern.hz to 100 instead of 1000. -- Regards, -Abdullah Ibn Hamad Al-Marri Arab Portal http://www.WeArab.Net/