From owner-freebsd-current@FreeBSD.ORG Sat May 30 16:52:01 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 4861710656CD for ; Sat, 30 May 2009 16:52:01 +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 C17ED8FC0C for ; Sat, 30 May 2009 16:52:00 +0000 (UTC) (envelope-from asmrookie@gmail.com) Received: by bwz9 with SMTP id 9so6828620bwz.43 for ; Sat, 30 May 2009 09:51:59 -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=29305O4TAoKX1hKMgdhZ/tLZ7R+tfa7mKp+e4iLQyyE=; b=cfDRiS1OQIwntJRojohnWJSm4qr86fZFmeQTr/vmMO9W8xiKdePu3584xLoCzRJL9Z AfbxBJhS3C8yq6fBzplJRn5gt1P1Qi2NqsElRIQIvpI8fq7RaKau3BVWwn0kU9S+tVrB u5KQVUGp9elREqGxECwzm3f93/dF5viLk+K4E= 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=Gz/CAOyCNb0Dfvtn8VstIsNLI0TdnmZzmaseM0eZiqIUwNLSuXth8tNJbd4aEw9NPz B0Xz36TXk+NDE0RXb5UFiCJMq7E+/KtxAuTO8nwBaffzO5n7X8r8RvN8lLEQnIpatc65 cTn6VSfcBxWoxxn5qEJdYbLw6X4l6xHsEAoag= MIME-Version: 1.0 Sender: asmrookie@gmail.com Received: by 10.223.110.4 with SMTP id l4mr2529127fap.47.1243702319707; Sat, 30 May 2009 09:51:59 -0700 (PDT) In-Reply-To: <3bbf2fe10905300944r96ae931re4475c78d9be3aa8@mail.gmail.com> References: <4A2120D5.50300@mail.zedat.fu-berlin.de> <3bbf2fe10905300848s6342a7b1l32340baee8e7e8f1@mail.gmail.com> <4A215D7F.7020807@mail.zedat.fu-berlin.de> <3bbf2fe10905300944r96ae931re4475c78d9be3aa8@mail.gmail.com> Date: Sat, 30 May 2009 18:51:59 +0200 X-Google-Sender-Auth: 3b153fed05be7c37 Message-ID: <3bbf2fe10905300951o3beea201j72b6e6b96f85c05a@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 16:52:01 -0000 2009/5/30 Attilio Rao : > 2009/5/30 O. Hartmann : >> Attilio Rao wrote: >>> 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 >>> >>> >>> >> Most recent, say: yesterday! As well as world. > > Can you try to revert only r193011 and see if something changes? Also, did you compile the single-core athlon64 without the option SMP? Thanks, Attilio -- Peace can only be achieved by understanding - A. Einstein