From owner-freebsd-stable@FreeBSD.ORG Tue Jun 5 14:35:02 2012 Return-Path: Delivered-To: freebsd-stable@FreeBSD.ORG Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 2A09E106575A for ; Tue, 5 Jun 2012 14:35:02 +0000 (UTC) (envelope-from olli@lurza.secnetix.de) Received: from lurza.secnetix.de (lurza.secnetix.de [IPv6:2a01:170:102f::2]) by mx1.freebsd.org (Postfix) with ESMTP id 988708FC18 for ; Tue, 5 Jun 2012 14:35:01 +0000 (UTC) Received: from lurza.secnetix.de (localhost [127.0.0.1]) by lurza.secnetix.de (8.14.3/8.14.3) with ESMTP id q55EYiQ9057967; Tue, 5 Jun 2012 16:34:59 +0200 (CEST) (envelope-from oliver.fromme@secnetix.de) Received: (from olli@localhost) by lurza.secnetix.de (8.14.3/8.14.3/Submit) id q55EYiSD057966; Tue, 5 Jun 2012 16:34:44 +0200 (CEST) (envelope-from olli) Date: Tue, 5 Jun 2012 16:34:44 +0200 (CEST) Message-Id: <201206051434.q55EYiSD057966@lurza.secnetix.de> From: Oliver Fromme To: freebsd-stable@FreeBSD.ORG, ohartman@zedat.fu-berlin.de In-Reply-To: <4FC9DC69.6090907@zedat.fu-berlin.de> X-Newsgroups: list.freebsd-stable User-Agent: tin/1.9.6-20101126 ("Burnside") (UNIX) (FreeBSD/6.4-PRERELEASE-20080904 (i386)) MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.3.9 (lurza.secnetix.de [127.0.0.1]); Tue, 05 Jun 2012 16:35:00 +0200 (CEST) Cc: Subject: Re: Why Are You NOT Using FreeBSD ? X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 05 Jun 2012 14:35:02 -0000 O. Hartmann wrote: > 2) Disk and network I/O issues under load. We realized that FreeBSD has > some issues in multithreaded environments. Even on 6/12 or 12/24 > core/thread systems, under heavy load (especially network and CPU load), > disk I/O was (is?) poor. This is a no-go in a HPC environment. This got a lot better when I switched to native AHCI mode for SATA disks. You have to have a fairly recent mainboard; my workstation at the office (about 3 years old) doesn't support AHCI mode yet. > 4) The lack of clustering capabilities. The lack of a clustered > filesystem grows more and more important in the area of HPC, where > storage systems get spread over a department. Yes, a clustered file system would be very useful to have, even outside the HPC area. Best regards Oliver -- Oliver Fromme, secnetix GmbH & Co. KG, Marktplatz 29, 85567 Grafing b. M. Handelsregister: Registergericht Muenchen, HRA 74606, Geschäftsfuehrung: secnetix Verwaltungsgesellsch. mbH, Handelsregister: Registergericht Mün- chen, HRB 125758, Geschäftsführer: Maik Bachmann, Olaf Erb, Ralf Gebhart FreeBSD-Dienstleistungen, -Produkte und mehr: http://www.secnetix.de/bsd