From owner-freebsd-fs@FreeBSD.ORG Thu Jan 10 17:08:52 2013 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.FreeBSD.org [8.8.178.115]) by hub.freebsd.org (Postfix) with ESMTP id 17D8D362 for ; Thu, 10 Jan 2013 17:08:52 +0000 (UTC) (envelope-from tevans.uk@googlemail.com) Received: from mail-vc0-f181.google.com (mail-vc0-f181.google.com [209.85.220.181]) by mx1.freebsd.org (Postfix) with ESMTP id CA645A08 for ; Thu, 10 Jan 2013 17:08:51 +0000 (UTC) Received: by mail-vc0-f181.google.com with SMTP id gb30so549506vcb.26 for ; Thu, 10 Jan 2013 09:08:45 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=OZoFrLIRFYH86Hdga6YTOzCV33cLcWDmQTUuLoDxNro=; b=Xx4+Tkd+X2tce+P+wXBDt3u1QuNMF5yvBGVF2F5U/1L/cJmO0/guip0eDoi5WkeZ1W F8cmZwx+3gFW/fqHEpbUd1/Fe7bTi0+5A9E6Gz/4okpeCNRKoX+iRi/FbX255GCcu6F0 lESsq0zfInlUBRlWc2arXGfp+SY+4SbBdKL72kLyXiw8mrY7ieii/G7BqlsfMq0MTz7z 7rB14LfVPQByIOctxsArpD0b2MaMQZFMQYdlPTl3FVMsbHwyO+/OS5tLarxtsjSvLB/y 4YvW6QxayPCjpI/i4QOKjGDP41nY6BXgBqbgrD0CPnPHTpY5kb7EKMhSpCvQHk6hImP1 JIxA== MIME-Version: 1.0 Received: by 10.52.66.144 with SMTP id f16mr78828115vdt.60.1357837725416; Thu, 10 Jan 2013 09:08:45 -0800 (PST) Received: by 10.59.13.73 with HTTP; Thu, 10 Jan 2013 09:08:45 -0800 (PST) In-Reply-To: <1357836862.81267.YahooMailClassic@web190806.mail.sg3.yahoo.com> References: <76DE1383-BAAA-4EFD-ABA6-A9328D79D5B3@bway.net> <1357836862.81267.YahooMailClassic@web190806.mail.sg3.yahoo.com> Date: Thu, 10 Jan 2013 17:08:45 +0000 Message-ID: Subject: Re: ZFS sub-optimal performance with default setting From: Tom Evans To: Patrick Dung Content-Type: text/plain; charset=UTF-8 Cc: freebsd-fs X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 10 Jan 2013 17:08:52 -0000 On Thu, Jan 10, 2013 at 4:54 PM, Patrick Dung wrote: > I have tried some tests, good and bad result is in below.......... > I am sure there is some bottleneck, and the root cause is still unknown. > Hi Patrick Correct me if I've made a mistake, but have you shown how you have configured your ZFS setup? Number and type of disks, etc, mirrored, raidz or raidz2? The output of zpool status and zfs-stats (from ports) would be useful. Cheers Tom