From owner-freebsd-questions@FreeBSD.ORG Sat Sep 17 12:41:07 2011 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 2D7A91065670 for ; Sat, 17 Sep 2011 12:41:07 +0000 (UTC) (envelope-from c.kworr@gmail.com) Received: from mail-fx0-f54.google.com (mail-fx0-f54.google.com [209.85.161.54]) by mx1.freebsd.org (Postfix) with ESMTP id B35418FC17 for ; Sat, 17 Sep 2011 12:41:06 +0000 (UTC) Received: by fxg9 with SMTP id 9so3396479fxg.13 for ; Sat, 17 Sep 2011 05:41:05 -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=R3KXh4LEizru15S21eXwbAA67LSmfa4U9fy310lC6Yk=; b=XWcZFxPYDJDPtgKHYv1EJGcGbbc5U/GLrHeFfMvVw+LIpK4wDc2LjXIxwRxYVsC5fk JgYVTw6ELGqkbFNYZNMDdxIF8dRNiFW+XldJyOalt/fB2Oo0o1atqR/O4lctRuqqJ/UL +DjYnQrwX5E1lA9rrOd6QWd2hnY5SqqHpKah0= Received: by 10.223.75.24 with SMTP id w24mr1056574faj.132.1316262808758; Sat, 17 Sep 2011 05:33:28 -0700 (PDT) Received: from limbo.lan ([195.225.157.86]) by mx.google.com with ESMTPS id n12sm10937530fan.9.2011.09.17.05.33.26 (version=SSLv3 cipher=OTHER); Sat, 17 Sep 2011 05:33:26 -0700 (PDT) Message-ID: <4E749394.1090607@gmail.com> Date: Sat, 17 Sep 2011 15:33:24 +0300 From: Volodymyr Kostyrko User-Agent: Mozilla/5.0 (X11; FreeBSD i386; rv:6.0.2) Gecko/20110907 Thunderbird/6.0.2 MIME-Version: 1.0 To: freebsd@top-consulting.net References: <20110916063153.200375qdq59crf8c@mail.top-consulting.net> <32990703-D068-4B0D-AF3A-C1E6EA0A4100@elde.net> <20110916101833.17485ybnq5srjbc4@mail.top-consulting.net> <20110916173956.18133qtvqi91m3wg@mail.top-consulting.net> In-Reply-To: <20110916173956.18133qtvqi91m3wg@mail.top-consulting.net> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-questions@freebsd.org Subject: Re: FS of choice for max random iops ( Maildir ) X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 17 Sep 2011 12:41:07 -0000 17.09.2011 00:39, freebsd@top-consulting.net wrote: > I even went as far as disabling the cache flush option of ZFS through > this variable: vfs.zfs.cache_flush_disable: 1, since I already have the > write cache of the controller. I've also set some other variables as per > the Tuning guide but according to several benchmarks ( iozone, bonnie++, > dd ) ZFS still comes in slower than UFS at pretty much everything. Oh, so you are making setup for running iozone, bonnie++ and dd continuously? You really like to wait for hours before fsck will finish checking for your volume? Listen to the others, you need real world benchmark, not some stress-tests. -- Sphinx of black quartz judge my vow.