From owner-freebsd-amd64@FreeBSD.ORG Fri Mar 16 15:06:33 2007 Return-Path: X-Original-To: freebsd-amd64@freebsd.org Delivered-To: freebsd-amd64@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 2DEA716A408 for ; Fri, 16 Mar 2007 15:06:33 +0000 (UTC) (envelope-from astrodog@gmail.com) Received: from wx-out-0506.google.com (wx-out-0506.google.com [66.249.82.239]) by mx1.freebsd.org (Postfix) with ESMTP id 89A4113C44B for ; Fri, 16 Mar 2007 15:06:32 +0000 (UTC) (envelope-from astrodog@gmail.com) Received: by wx-out-0506.google.com with SMTP id s18so557087wxc for ; Fri, 16 Mar 2007 08:06:32 -0700 (PDT) DKIM-Signature: a=rsa-sha1; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:message-id:date:from:user-agent:mime-version:cc:subject:references:in-reply-to:content-type:content-transfer-encoding; b=DaNBER+/iUAsrLb7bUp6mkyMK3EATT941r+MLg3uabpAisy/dvd2F8DiBapjIfk10980pX019yLldgTnithhsUsNs7W34sTM5qHZS8QsoOC8Za7i8hDG4g80aoStqPUkvlSAr2JFatvu6d5OHvkDrsQ846XGKEbhMB2bI7SVzcM= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:user-agent:mime-version:cc:subject:references:in-reply-to:content-type:content-transfer-encoding; b=dBAwe2sKgz5PW+peh/Ja/O/k+okJsd/S7IZoPkCuUUISYOxJzwW22Qc4qg1o8To6s+R9wQTJUeMQLgg4DSCzEx/hzmNldu8kNgIOaJ5J9x7M8Cbh1wbWvoD6RsmLoMqXMBwuRJDHKt2/p8YP6AAzDVKiZbhxByG0O5azcK7/BFs= Received: by 10.90.51.17 with SMTP id y17mr1795102agy.1174056043221; Fri, 16 Mar 2007 07:40:43 -0700 (PDT) Received: from ?192.168.1.2? ( [71.153.182.192]) by mx.google.com with ESMTP id 17sm8798626nzo.2007.03.16.07.40.41; Fri, 16 Mar 2007 07:40:42 -0700 (PDT) Message-ID: <45FAAC6A.90209@gmail.com> Date: Fri, 16 Mar 2007 09:40:42 -0500 From: Harrison Grundy User-Agent: Thunderbird 1.5.0.7 (X11/20061027) MIME-Version: 1.0 References: <000801c76757$4a6cf9e0$0204a8c0@jmlaptop> In-Reply-To: <000801c76757$4a6cf9e0$0204a8c0@jmlaptop> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: 'Axel Rau' , freebsd-database@freebsd.org, freebsd-amd64@freebsd.org Subject: Re: New Opteron box, dedicated to PostgreSQL X-BeenThere: freebsd-amd64@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Porting FreeBSD to the AMD64 platform List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 16 Mar 2007 15:06:33 -0000 Jan Mikkelsen wrote: > Hi, > > Axel Rau wrote: > > >> 1. Are there any precautions in fbsd to prevent from excessive page >> switching between the memory nodes? >> E.g. what happens if file cache pages (heavily used by Pg, >> planned 6GB) frequently not found on local node? >> > > Not that I'm aware of. FreeBSD doesn't have NUMA awareness. > FreeBSD does not support this. I've been working on the scheduler side of things, but I do not understand the VM well enough to do that side of it. > >> 2. If there is no good solution for this problem, does it make sense >> to stay with one dualcore (soon quadcore) processor? >> No. 2 memory controllers beats 1, even with the remote penalty occuring. The difference either way will be fairly trivial, though. > > Benchmark and see. > > >> 4. Can I install the system on an Areca raid? >> > > Yes. If you are planning to use 6.2-RELEASE, make sure that you get the > arcmsr driver from 6-STABLE. The arcmsr driver in 6.2-RELEASE can show > I/O errors under high load. > > Regards, > > Jan Mikkelsen > > _______________________________________________ > freebsd-amd64@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-amd64 > To unsubscribe, send any mail to "freebsd-amd64-unsubscribe@freebsd.org" > >