From owner-freebsd-current@FreeBSD.ORG Fri Nov 13 00:57:07 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 8EFA81065696 for ; Fri, 13 Nov 2009 00:57:07 +0000 (UTC) (envelope-from ivoras@gmail.com) Received: from mail-fx0-f227.google.com (mail-fx0-f227.google.com [209.85.220.227]) by mx1.freebsd.org (Postfix) with ESMTP id 1D3048FC0A for ; Fri, 13 Nov 2009 00:57:06 +0000 (UTC) Received: by fxm27 with SMTP id 27so3070064fxm.3 for ; Thu, 12 Nov 2009 16:57:06 -0800 (PST) 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:from:date:x-google-sender-auth:message-id:subject:to:cc :content-type; bh=qR6WQiNFiAsDhHXOIQtzuebzK3z9zgW3R/n3C58Kh3E=; b=rMKl+iUansHf5N/PvRSp0GeNGyTx2s5O1ccZ/Vko8GibsHJW3Ce7Vs39RZ6IsA166f zfSJrfbiSsz/GhlTIDRqCreO7exN9aaoqwd2Z2PUMZxeqH/HtVgEH4N+HXFCwVHKL6i0 ECVAz6C835pFL8cupPyCykBwOPrOJV81NhVWE= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:from:date :x-google-sender-auth:message-id:subject:to:cc:content-type; b=rlBdPsloQyHX+D8iE0/fJZ53sT3vSspLdRtdmcuUdnZx8Zv7OyAjpwG+GRccdszjay /whlQtUGdLaHp5iryucEHjkRxBDW36cOMUDXXqkTBie7Fwk/YfvPA/WnVSWSzmjv4Wbu 3l2FeEzm52gBjK9u3m1430e6BdCjpzYSmtjXM= MIME-Version: 1.0 Sender: ivoras@gmail.com Received: by 10.216.91.10 with SMTP id g10mr1107027wef.217.1258073826168; Thu, 12 Nov 2009 16:57:06 -0800 (PST) In-Reply-To: References: <11167f520911111050j36dd94far667c81e6f5c18e69@mail.gmail.com> <9bbcef730911111352t12188bdajbca71bcf35a5beb5@mail.gmail.com> <11167f520911121044l74744c30u5a4d9ca008ab863c@mail.gmail.com> <11167f520911121101o403751ddmb544dfaf1c61bf1e@mail.gmail.com> <9bbcef730911121328t342b2268oceba3712b52511d4@mail.gmail.com> From: Ivan Voras Date: Fri, 13 Nov 2009 01:56:46 +0100 X-Google-Sender-Auth: 6746473480af4eef Message-ID: <9bbcef730911121656x7615efcbu7dfb1ef060c2797c@mail.gmail.com> To: Scott Ullrich Content-Type: text/plain; charset=UTF-8 Cc: freebsd-current@freebsd.org Subject: Re: Help ZFS FreeBSD 8.0 RC2 Write performance issue 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: Fri, 13 Nov 2009 00:57:07 -0000 2009/11/13 Scott Ullrich : > On Thu, Nov 12, 2009 at 4:28 PM, Ivan Voras wrote: >> So in short, you are saying the to get "normal" performance out of >> ZFS+NFS, the best way is to invest in an Areca and 2 SSDs :)) > > Yep, that seems to be the magic recipe for NFS related serving. I know it's a bit late now that you've settled on your equipment but did you try discovering why you get performance so low you need SSDs to cope? I think I've read somewhere that disabling ZIL should help NFS performance - did you try it? Did you test your workload directly on the ZFS volume (without NFS) or with another network file system like Samba?