From owner-freebsd-current@FreeBSD.ORG Tue Nov 2 18:05:20 2004 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id E1D9A16A4CF for ; Tue, 2 Nov 2004 18:05:20 +0000 (GMT) Received: from mail.gmx.net (mail.gmx.net [213.165.64.20]) by mx1.FreeBSD.org (Postfix) with SMTP id 0168143D53 for ; Tue, 2 Nov 2004 18:05:20 +0000 (GMT) (envelope-from Emanuel.Strobl@gmx.net) Received: (qmail 31075 invoked by uid 65534); 2 Nov 2004 18:05:18 -0000 Received: from flb.schmalzbauer.de (EHLO cale.flintsbach.schmalzbauer.de) (62.245.232.135) by mail.gmx.net (mp014) with SMTP; 02 Nov 2004 19:05:18 +0100 X-Authenticated: #301138 From: Emanuel Strobl To: freebsd-current@freebsd.org Date: Tue, 2 Nov 2004 19:05:01 +0100 User-Agent: KMail/1.7 References: <20041102124750.77588.qmail@web14102.mail.yahoo.com> <200411021355.58139.Emanuel.Strobl@gmx.net> <20041102113112.F23546@alpha.siliconlandmark.com> In-Reply-To: <20041102113112.F23546@alpha.siliconlandmark.com> X-OS: FreeBSD X-Birthday: 10/06/72 X-Address: Munich, 80686 X-Tel: +49 89 18947781 X-CelPhone: +49 173 9967781 X-Country: Germany MIME-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart6008457.DfzRTMEGpv"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit Message-Id: <200411021905.08044.Emanuel.Strobl@gmx.net> Subject: Re: asymmetric NFS transfer rates X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 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, 02 Nov 2004 18:05:21 -0000 --nextPart6008457.DfzRTMEGpv Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Am Dienstag, 2. November 2004 17:50 schrieb Andre Guibert de Bruet: > On Tue, 2 Nov 2004, Emanuel Strobl wrote: > > Am Dienstag, 2. November 2004 13:47 schrieb Claus Guttesen: > >>> problems, but I'm wondering why I > >>> can't write to my 5.3-stable NFS server more that > >>> 3,5MB/s while reading gives > >>> me 9,5MB/s? > >> > >> Are you using IDE- or SCSI-disks? Reading is faster > >> than writing on IDE. > > > > Like I wrote, the server writes more than 35MB/s onto the RAID5 array. > > Last time I saw a hard drive which has problems with 10MB/s was 6 years > > ago, no matter of IDE or SCSI. > > You are going by the assumption that the benchmarks are run using > transfers of a single, contiguous, abnormally huge file. In the real > world, things aren't that peachy. Remember to factor in things such as > seek times, drive response latency, driver locking and contention on > Giant (This is a SCSI RAID card, isn't it?), among other things... It's a IDE Raid controller (3ware 7506-4, a real one) and the file is indee= d=20 huge, but not abnormally. I have a harddisk video recorder, so I have lots = of=20 700MB files. Also if I copy my photo collection from the server it takes 5= =20 Minutes but copying _to_ the server it takes almost 15 Minutes and the=20 average file size is 5 MB. Fast Ethernet isn't really suitable for my needs= ,=20 but at least the 10MB/s should be reached. I can't imagine I get better=20 speeds when I upgrade to GbE, (which the important boxes are already, just= =20 not the switch) because NFS in it's current state isn't able to saturate a= =20 100baseTX line, at least in one direction. That's the real anstonishing thi= ng=20 for me. Why does reading staurate 100BaseTX but writes only a third? Thanks, =2DMano > > Regards, > Andy > > | Andre Guibert de Bruet | Enterprise Software Consultant > > | Silicon Landmark, LLC. | http://siliconlandmark.com/ > > > _______________________________________________ > 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" --nextPart6008457.DfzRTMEGpv Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.6 (FreeBSD) iD8DBQBBh8xTBylq0S4AzzwRAs1cAJ9UCMsYyZGIYZWB2bySibQ+LtywwQCfbelu +nHNv3uD/DVCMXw43uZOWIg= =WQDG -----END PGP SIGNATURE----- --nextPart6008457.DfzRTMEGpv--