Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 28 Feb 2002 19:02:56 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 28 Feb 2002 19:01:08 -0500 Received: from nobugconsulting.ro ([213.157.160.38]:30862 "EHLO mail.nobugconsulting.ro") by vger.kernel.org with ESMTP id ; Thu, 28 Feb 2002 18:58:43 -0500 Date: Fri, 1 Mar 2002 01:58:41 +0200 (EET) From: lonely wolf X-X-Sender: wolfy@nobugconsulting.ro Cc: linux-kernel@vger.kernel.org Subject: Re: disk transfer speed problem In-Reply-To: <3C7EB3C2.5090401@bcgreen.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII To: unlisted-recipients:; (no To-header on input)@localhost.localdomain Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 28 Feb 2002, Stephen Samuel wrote: > Picking nits, perhaps -- but after giving us data on hdc, > you did the test on hdd. I realize you said that it is identical > for both, but if you missed something critical, we'll never see it. they are 100% identical. except for the fact that one is master and the other slave on the same cable. I did not include the results for both in order to shorten the message. here we go, just in case: [root@bugmaster /root]# /sbin/hdparm -tT /dev/hdc /dev/hdd;/sbin/hdparm /dev/hdc /dev/hdd;/sbin/hdparm -i /dev/hdc /dev/hdd /dev/hdc: Timing buffer-cache reads: 128 MB in 1.17 seconds =109.40 MB/sec Timing buffered disk reads: 64 MB in 3.01 seconds = 21.26 MB/sec /dev/hdd: Timing buffer-cache reads: 128 MB in 1.09 seconds =117.43 MB/sec Timing buffered disk reads: 64 MB in 2.96 seconds = 21.62 MB/sec /dev/hdc: multcount = 16 (on) I/O support = 1 (32-bit) unmaskirq = 0 (off) using_dma = 1 (on) keepsettings = 0 (off) nowerr = 0 (off) readonly = 0 (off) readahead = 8 (on) geometry = 23989/16/63, sectors = 156301488, start = 0 /dev/hdd: multcount = 16 (on) I/O support = 1 (32-bit) unmaskirq = 0 (off) using_dma = 1 (on) keepsettings = 0 (off) nowerr = 0 (off) readonly = 0 (off) readahead = 8 (on) geometry = 23989/16/63, sectors = 156301488, start = 0 /dev/hdc: Model=ST380021A, FwRev=3.05, SerialNo=3HV080KH Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% } RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4 BuffType=unknown, BuffSize=2048kB, MaxMultSect=16, MultSect=16 CurCHS=16383/16/63, CurSects=-66060037, LBA=yes, LBAsects=156301488 IORDY=on/off, tPIO={min:240,w/IORDY:120}, tDMA={min:120,rec:120} PIO modes: pio0 pio1 pio2 pio3 pio4 DMA modes: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5 /dev/hdd: Model=ST380021A, FwRev=3.05, SerialNo=3HV07SDN Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% } RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4 BuffType=unknown, BuffSize=2048kB, MaxMultSect=16, MultSect=16 CurCHS=16383/16/63, CurSects=-66060037, LBA=yes, LBAsects=156301488 IORDY=on/off, tPIO={min:240,w/IORDY:120}, tDMA={min:120,rec:120} PIO modes: pio0 pio1 pio2 pio3 pio4 DMA modes: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5 Mr Davidovac Zoran mentioned normal transfer speeds with kernel 2.4.17. Should I try ? Are there significant differences between 2.4.9-21 (or -31) and 2.4.17 in the IDE drivers ? - This is Linux Country. On a quiet night, you can hear Windows NT reboot! - 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/