Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 27 Feb 2002 17:54:57 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 27 Feb 2002 17:54:27 -0500 Received: from nobugconsulting.ro ([213.157.160.38]:44672 "EHLO mail.nobugconsulting.ro") by vger.kernel.org with ESMTP id ; Wed, 27 Feb 2002 17:52:29 -0500 Message-ID: <3C7D632C.46CE687@pcnet.ro> Date: Thu, 28 Feb 2002 00:52:28 +0200 From: lonely wolf X-Mailer: Mozilla 4.79 [en] (X11; U; Linux 2.4.14 i686) X-Accept-Language: en MIME-Version: 1.0 To: Mark Hahn , linux-kernel@vger.kernel.org Subject: Re: disk transfer speed problem In-Reply-To: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Mark Hahn wrote: > > initial data: one brand new intel bonham motherboard (i815) , 900 MHz > > celeron processor > > what's the ram config? that's probably one of the old/slow > FSB66 celerons, but is the ram fast? the processor has 100 MB FSB The memory is PC133, 1 DIMM of 128 MB > > DMA modes: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5 > > fine, udma100. i know > > The problem: > > #/sbin/hdparm -tTf /dev/hdd > > > > /dev/hdd: > > Timing buffer-cache reads: 128 MB in 1.17 seconds =109.40 MB/sec > > Timing buffered disk reads: 64 MB in 3.24 seconds = 19.75 MB/sec > > well, 109 MB/s is pretty low for buffer-cache reads; this reflects > the relative crippled-ness of your cpu/dram/chipset. well... i would't name a Celeron 900 MHz crippled. PC133 is the best the board gets... and now the speed is lower then the previous server which was an Athlon 600 pluggede in an Asus VIA KX133 based mobo. > doesn't the i815 have integrated video, yes > and if so, are you using it, yes > and if so, do you have the optional "display cache"? couldn't find any BIOS setting for that. where should it be ? > without the DC, video steals quite a lot of dram bandwidth... the machine is (should be) a NFS server, I couldn't care less about the video -- Manuel Wolfshant linux registered user #131416 network administrator NoBug Consulting Romania Beware the fury of a patient man. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/