From owner-freebsd-current@FreeBSD.ORG Mon Nov 8 21:04:45 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 5C9A716A4CF for ; Mon, 8 Nov 2004 21:04:45 +0000 (GMT) Received: from mail.gmx.net (pop.gmx.net [213.165.64.20]) by mx1.FreeBSD.org (Postfix) with SMTP id 3680743D2D for ; Mon, 8 Nov 2004 21:04:44 +0000 (GMT) (envelope-from Emanuel.Strobl@gmx.net) Received: (qmail 5927 invoked by uid 65534); 8 Nov 2004 21:04:42 -0000 Received: from flb.schmalzbauer.de (EHLO cale.flintsbach.schmalzbauer.de) (62.245.232.135) by mail.gmx.net (mp012) with SMTP; 08 Nov 2004 22:04:42 +0100 X-Authenticated: #301138 From: Emanuel Strobl To: freebsd-current@freebsd.org Date: Mon, 8 Nov 2004 22:04:39 +0100 User-Agent: KMail/1.7 References: <20041102105534.K63929@carver.gumbysoft.com> <200411080429.12846.Emanuel.Strobl@gmx.net> In-Reply-To: <200411080429.12846.Emanuel.Strobl@gmx.net> 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="nextPart8801253.ULrAexxBJs"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit Message-Id: <200411082204.41913.Emanuel.Strobl@gmx.net> cc: Robert Watson 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: Mon, 08 Nov 2004 21:04:45 -0000 --nextPart8801253.ULrAexxBJs Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Am Montag, 8. November 2004 04:29 schrieb Emanuel Strobl: > Am Dienstag, 2. November 2004 19:56 schrieb Doug White: > > On Tue, 2 Nov 2004, Robert Watson wrote: > > > On Tue, 2 Nov 2004, Emanuel Strobl wrote: [...] > Now back to my real problem: Can you imagine that NFS and twe are blocking > each other or something like that? Why do I get such really bad transfer > rates when both parts are in use but every single part on its own seems to > work fine? I don't think so but by chance, can it have todo with this bug (from TWE(4)): BUGS The controller cannot handle I/O transfers that are not aligned to a 512-byte boundary. In order to support raw device access from user- space, the driver will perform alignment fixup on non-aligned data. This process is inefficient, and thus in order to obtain best performance user-space applications accessing the device should do so with aligned buffers. Thanks, -Harry > > Thanks for any help, > > -Harry --nextPart8801253.ULrAexxBJs Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.6 (FreeBSD) iD8DBQBBj99pBylq0S4AzzwRAqbjAJ9651gXcQ/XFQW1WUhz0pqr9cnQ5QCgj4iq QxC3wu3ALzxgOpW2qoOsaEc= =7PyF -----END PGP SIGNATURE----- --nextPart8801253.ULrAexxBJs--