From owner-freebsd-current@FreeBSD.ORG Tue Jul 17 03:45:15 2007 Return-Path: X-Original-To: freebsd-current@freebsd.org Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 95F8C16A401 for ; Tue, 17 Jul 2007 03:45:15 +0000 (UTC) (envelope-from bdonnell@gmail.com) Received: from wr-out-0506.google.com (wr-out-0506.google.com [64.233.184.225]) by mx1.freebsd.org (Postfix) with ESMTP id ECD7913C4AA for ; Tue, 17 Jul 2007 03:45:14 +0000 (UTC) (envelope-from bdonnell@gmail.com) Received: by wr-out-0506.google.com with SMTP id i23so711243wra for ; Mon, 16 Jul 2007 20:45:14 -0700 (PDT) DKIM-Signature: a=rsa-sha1; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:references; b=i7MBbU0+NoStMiMUcsh3AnPb/xeVIkBN5jcJS6HY8PdPPPhYttYbcKDQKksqtzJu+EjFJ8u1WDLeDMjV8Qo6zc/pEezCRm0YJiU1F9SqheKgGAdzexC5OH+Yyy4/vQ2m139oRpbluBwXqnJOGUYE07s/kMvAQpTbHk9ay1Rqyi0= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:references; b=KPUhBIYgpry6AzM5xBNLXYkFMeoYgaUY1oBvdm8N+TdV+mT7jOKTJ8UNvfV/8e4MpDLPuakjIAegN0GwJ7mTL3JVcyS4+jZbmuXFrOkz2zWx17A36DsRIKN6WSPNGj3J7yJocbY8up0VolXO6HWSnRS3eGHBw5QRiq65K7a/8fA= Received: by 10.142.214.5 with SMTP id m5mr71wfg.1184643911694; Mon, 16 Jul 2007 20:45:11 -0700 (PDT) Received: by 10.142.77.9 with HTTP; Mon, 16 Jul 2007 20:45:11 -0700 (PDT) Message-ID: <1c5c32890707162045u9d56cfeq2f7430ddddd55418@mail.gmail.com> Date: Mon, 16 Jul 2007 23:45:11 -0400 From: "Brian Donnell" To: "Steven Schlansker" In-Reply-To: <469C3900.5020703@berkeley.edu> MIME-Version: 1.0 References: <2978EDA9-D393-434C-B734-2DE188631761@berkeley.edu> <469C3900.5020703@berkeley.edu> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: freebsd-current@freebsd.org Subject: Re: Strange performance characteristics with ZFS 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, 17 Jul 2007 03:45:15 -0000 When I was experimenting with ZFS over NFS I had similar experiences. Do me a favor and try something that sounds a little out there. On a shell on the ZFS machine set up a looping script that executes an ls on the directory you're writing the file to once every second and watch your transfer rates. I noticed a marked improvement, but I could never determine if it was ZFS or the client NFS implementation. -- Brian On 7/16/07, Steven Schlansker wrote: > > Claus Guttesen wrote: > >> I'm experiencing what (to me) seems to be strange performance with > >> ZFS. I have it set up as follows: > >> > >> [steven@universe /universe]$ sudo zpool status > >> pool: universe > >> state: ONLINE > >> I share it over NFS to a linux machine. I'm trying to write a very > >> large (30GB) disk image to it over nfs, and it goes in short fits and > >> bursts. > >> > >> It copies a few (mega?)bytes of data (not sure how much exactly), and > >> top shows: > > > > How much ram is installed? > > > > 2.5GB, with an Athlon64 3200+ > _______________________________________________ > 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" >