From owner-freebsd-current@FreeBSD.ORG Sat May 30 15:48:23 2009 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 6BA8F1065697 for ; Sat, 30 May 2009 15:48:23 +0000 (UTC) (envelope-from asmrookie@gmail.com) Received: from mail-bw0-f213.google.com (mail-bw0-f213.google.com [209.85.218.213]) by mx1.freebsd.org (Postfix) with ESMTP id E31398FC1B for ; Sat, 30 May 2009 15:48:22 +0000 (UTC) (envelope-from asmrookie@gmail.com) Received: by bwz9 with SMTP id 9so6808424bwz.43 for ; Sat, 30 May 2009 08:48:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:sender:received:in-reply-to :references:date:x-google-sender-auth:message-id:subject:from:to:cc :content-type:content-transfer-encoding; bh=MbzKkRnwdrm8/bAiZbnXJWTVsGVKpdS59PkyOC8eNUw=; b=MQjWBG8DWaJjWFX/76UJsN7qfnpgiH40DIqZq9u+qe8cWsE+qhiLpSQzJwwtfk6Xxm eSZDammw7wJM+VSGjAAX7spmtiPXMn1xNU/zYJ1RSVKAlU4FpdwoyZFsGNN+JaWKioK5 Ei9Pr/zCQATblkdZ3wWdpPzdUP1Ur1KLCoUps= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type :content-transfer-encoding; b=sLGLM9iYWwy0VB7nFZZZ992vbXS171YfTEPx3BOJBa9dMbheJ8AF7iklmOciuy9IHk 26c734qCk4kKWkYlxRbI3XD0hV9QhdkwyeQg2xF6nt21JvH5f8CkRflkvXC1Bkcmtw3U e8Qk+l9ismzMw1UwlKprsqGBT/z8yD/wep1vA= MIME-Version: 1.0 Sender: asmrookie@gmail.com Received: by 10.223.105.16 with SMTP id r16mr2545510fao.24.1243698501643; Sat, 30 May 2009 08:48:21 -0700 (PDT) In-Reply-To: <4A2120D5.50300@mail.zedat.fu-berlin.de> References: <4A2120D5.50300@mail.zedat.fu-berlin.de> Date: Sat, 30 May 2009 17:48:21 +0200 X-Google-Sender-Auth: 9f7cf0eec8fee95c Message-ID: <3bbf2fe10905300848s6342a7b1l32340baee8e7e8f1@mail.gmail.com> From: Attilio Rao To: "O. Hartmann" Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Cc: freebsd-current@freebsd.org Subject: Re: signifanctly slowdown of FreeBSD 8.0-CURRENT/amd64 X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 30 May 2009 15:48:24 -0000 2009/5/30 O. Hartmann : > Hello. > I realized a significant slowdown of FreeBSD 8.0-CURRENT/amd64 on every > box I run. I have the most recent FreeBSD 8.0-CURRENT/amd64 with custom > kernel and switched off every debugging. I see a drastic slowdown > whenever heavy I/O on UFS2 and ZFS partitions is performed and whenever > some compilation is done (compiling world and kernel). This is horrible > on a single core Athlon64 CPU with 2GB RAM as well as on a 4 core Q6600 > with 8GB and a server with 2 x 4-cores and 16GB RAM. > > I can not say clearly whether I/O is the bottleneck. Maybe something > with the memory subsystem, when it comes to compiler runs, when no disk > I/O is done but the box is still horrible slow. This behaviour occured > several weeks ago, not being able to specify it more precisely. > > AQre there any issues at the moment? Your kernel is compiled from which date? Thanks, Attilio -- Peace can only be achieved by understanding - A. Einstein