From owner-freebsd-questions@FreeBSD.ORG Mon Feb 8 01:24:52 2010 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 797621065670 for ; Mon, 8 Feb 2010 01:24:52 +0000 (UTC) (envelope-from pieter@degoeje.nl) Received: from smtp.utwente.nl (smtp1.utsp.utwente.nl [130.89.2.8]) by mx1.freebsd.org (Postfix) with ESMTP id F39968FC12 for ; Mon, 8 Feb 2010 01:24:51 +0000 (UTC) Received: from nox-laptop.student.utwente.nl (nox-laptop.student.utwente.nl [130.89.160.140]) by smtp.utwente.nl (8.12.10/SuSE Linux 0.7) with ESMTP id o181O1Y7022381; Mon, 8 Feb 2010 02:24:01 +0100 From: Pieter de Goeje To: freebsd-questions@freebsd.org Date: Mon, 8 Feb 2010 02:24:00 +0100 User-Agent: KMail/1.9.10 References: <4B6ED119.2060308@mailinglist.ahhyes.net> In-Reply-To: <4B6ED119.2060308@mailinglist.ahhyes.net> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <201002080224.01343.pieter@degoeje.nl> X-UTwente-MailScanner-Information: Scanned by MailScanner. Contact icts.servicedesk@utwente.nl for more information. X-UTwente-MailScanner: Found to be clean X-UTwente-MailScanner-From: pieter@degoeje.nl X-Spam-Status: No Cc: alex Subject: Re: FreeBSD's UFS vs Ext4 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: Mon, 08 Feb 2010 01:24:52 -0000 On Sunday 07 February 2010 15:41:29 alex wrote: > Hi Guys, > > Today I reformatted a machine (network server) thats run FreeBSD nonstop > for at least the last 3 years and installed linux on it. I have a raid 0 > setup with 2 hard disks in the very same machine. > > Previously, the maximum I could get across my gigabit enabled network > was 60MB/s (megabytes) per second sustained transfer rate. > > Now that the same machine's raid is formatted with ext4, i am easily > sustaining 86MB/s. Too many variables. The difference in performance could be due to: 1) Slow filesystem. 2) Slow network (nic). 3) Slow FTP server. The fact that the limit is 86MB/sec (which is very low for a raid0 array) makes me think the box suffers from sub optimal network performance during a simple stream test like yours. This could be due to FreeBSD having a poor network driver for your particular NIC or could be due to insufficient tuning of the TCP parameters for this particular test. You haven't given any details about the hardware, network tuning done, how you configured the filesystem, raw filesystem performance, raw network performance. If you want a meaningful response based on more than guesswork, please gather more data. -- Pieter de Goeje