From owner-freebsd-current@FreeBSD.ORG Tue Jul 12 18:10:35 2011 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 707B21065670 for ; Tue, 12 Jul 2011 18:10:35 +0000 (UTC) (envelope-from sendtomatt@gmail.com) Received: from mail-iy0-f182.google.com (mail-iy0-f182.google.com [209.85.210.182]) by mx1.freebsd.org (Postfix) with ESMTP id 2BFBC8FC14 for ; Tue, 12 Jul 2011 18:10:34 +0000 (UTC) Received: by iyb11 with SMTP id 11so6285158iyb.13 for ; Tue, 12 Jul 2011 11:10:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:content-type:content-transfer-encoding; bh=kHGRwFtbEFNWzJU/Re/4ROpzIKSZg156uBCrZhD4Pm0=; b=Zz4pramRBeWkIv5tyNg6BOl6b1qedn3RK4LuIsDsWPvteAZCMph3qEpl6cITt52S8j SbnTqgaCSDAb1nNPyyeb4/6r3NHgotiarbMWIobe1m6D+6iWhWinnivp9IrKaZsjjjnK OmSZ9rbD7KTu1CRSUwdSH+MQZSQ4+8tiwxfJA= Received: by 10.42.177.197 with SMTP id bj5mr177754icb.212.1310494234033; Tue, 12 Jul 2011 11:10:34 -0700 (PDT) Received: from sidhe.local ([75.111.38.94]) by mx.google.com with ESMTPS id a5sm1031885icb.3.2011.07.12.11.10.31 (version=SSLv3 cipher=OTHER); Tue, 12 Jul 2011 11:10:32 -0700 (PDT) Message-ID: <4E1C8E19.8010105@gmail.com> Date: Tue, 12 Jul 2011 11:10:33 -0700 From: Matt User-Agent: Mozilla/5.0 (X11; U; FreeBSD amd64; en-US; rv:1.9.2.18) Gecko/20110624 Thunderbird/3.1.11 MIME-Version: 1.0 To: Arnaud Lacombe References: <4E1421D9.7080808@zedat.fu-berlin.de> <20110706162811.GA68436@troutmask.apl.washington.edu> <20110706193636.GA69550@troutmask.apl.washington.edu> <4E14CCE5.4050906@zedat.fu-berlin.de> <20110707015151.GB71966@troutmask.apl.washington.edu> <4E1B67C7.8040402@FreeBSD.org> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: mdf@freebsd.org, FreeBSD Current Subject: Re: Heavy I/O blocks FreeBSD box for several seconds 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: Tue, 12 Jul 2011 18:10:35 -0000 > Sic... If you allow me the comparison, FreeBSD development is as open > as are the US (and, to some extend, most western country) borders > nowadays open to aliens, and believe me, this is not a compliment. > > - Arnaud > _______________________________________________ > freebsd-current@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org" > This is getting offtopic fast. Can we just EGODWIN here? It doesn't fulfill the entire requirements, but it's getting close... Is it possible CPU is the wrong cause of the blocking? Is there perhaps memory contention between ZFS/UFS in OP's setup? Could filesystem/disk performance be the cause and not obscure technicalities of ULE scheduler? Dodgy hardware causing interrupt storms? Ethernet not in polling mode? Matt