Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 20 Dec 2001 12:39:25 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 20 Dec 2001 12:39:16 -0500 Received: from sproxy.gmx.de ([213.165.64.20]:716 "HELO mail.gmx.net") by vger.kernel.org with SMTP id ; Thu, 20 Dec 2001 12:39:03 -0500 Date: Thu, 20 Dec 2001 18:41:17 +0100 From: Sebastian =?ISO-8859-1?Q?Dr=F6ge?= To: linux-kernel@vger.kernel.org Subject: Re: IDE Harddrive Performance Message-Id: <20011220184117.46cde456.sebastian.droege@gmx.de> In-Reply-To: In-Reply-To: <01122013105001.27161@spikes> X-Mailer: Sylpheed version 0.6.6 (GTK+ 1.2.10; i686-pc-linux-gnu) Mime-Version: 1.0 Content-Type: multipart/signed; protocol="application/pgp-signature"; boundary="=.QHogtuCyy'Yzr?" Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org --=.QHogtuCyy'Yzr? Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Hi, My disc throughput on a Intel PIIX4 with an IBM-DTTA-351010 (10 GB/hda) and a Western Digital WD800BB-00BSA0 (80 GB/hdb) Kernel is 2.5.1-dj2 Maybe it helps a bit ;) Little question for the masters of hardware here in the list... buffer-chache reads speed is just the speed of the cache, right? So I think only buffered disk reads say something about the real speed of the drive. And 10 or 11 MB/sec aren't much... --------------------------------------------------------------------------------------------------- root:/home/slomo# hdparm -Tt /dev/hda /dev/hda: Timing buffer-cache reads: 128 MB in 1.49 seconds = 85.91 MB/sec Timing buffered disk reads: 64 MB in 5.93 seconds = 10.79 MB/sec root:/home/slomo# hdparm /dev/hda /dev/hda: multcount = 16 (on) I/O support = 1 (32-bit) unmaskirq = 1 (on) using_dma = 1 (on) keepsettings = 0 (off) nowerr = 0 (off) readonly = 0 (off) readahead = 8 (on) geometry = 1232/255/63, sectors = 19807200, start = 0 root:/home/slomo# hdparm -I /dev/hda /dev/hda: non-removable ATA device, with non-removable media Model Number: IBM-DTTA-351010 Serial Number: WF0WFHH5554 Firmware Revision: T56OA73A Standards: Used: ATA/ATAPI-4 T13 1153D revision 17 Supported: 1 2 3 4 Configuration: Logical max current cylinders 16383 16383 heads 16 16 sectors/track 63 63 bytes/track: 0 (obsolete) bytes/sector: 0 (obsolete) current sector capacity: 16514064 LBA user addressable sectors = 19807200 Capabilities: LBA, IORDY(can be disabled) Buffer size: 466.0kB ECC bytes: 34 Queue depth: 32 Standby timer values: spec'd by standard, no device specific minimum r/w multiple sector transfer: Max = 16 Current = 16 DMA: sdma0 sdma1 sdma2 mdma0 mdma1 mdma2 udma0 udma1 *udma2 Cycle time: min=120ns recommended=120ns PIO: pio0 pio1 pio2 pio3 pio4 Cycle time: no flow control=240ns IORDY flow control=120ns Commands/features: Enabled Supported: * NOP cmd * READ BUFFER cmd * WRITE BUFFER cmd * Host Protected Area feature set release interrupt * look-ahead * write cache * Power Management feature set Security Mode feature set * SMART feature set * READ/WRITE DMA QUEUED Security: supported not enabled not locked not frozen not expired: security count not supported: enhanced erase 22min for SECURITY ERASE UNIT. ------------------------------------------------------------------------------------------------- root:/home/slomo# hdparm -Tt /dev/hdb /dev/hdb: Timing buffer-cache reads: 128 MB in 1.39 seconds = 92.09 MB/sec Timing buffered disk reads: 64 MB in 5.61 seconds = 11.41 MB/sec root:/home/slomo# hdparm /dev/hdb /dev/hdb: multcount = 16 (on) I/O support = 1 (32-bit) unmaskirq = 1 (on) using_dma = 1 (on) keepsettings = 0 (off) nowerr = 0 (off) readonly = 0 (off) readahead = 8 (on) geometry = 155061/16/63, sectors = 156301488, start = 0 root:/home/slomo# hdparm -I /dev/hdb /dev/hdb: non-removable ATA device, with non-removable media Model Number: WDC WD800BB-00BSA0 Serial Number: WD-WMA6S1226085 Firmware Revision: 12.08C12 Standards: Supported: 1 2 3 4 5 Likely used: 5 Configuration: Logical max current cylinders 16383 17475 heads 16 15 sectors/track 63 63 bytes/track: 57600 (obsolete) bytes/sector: 600 (obsolete) current sector capacity: 16513875 LBA user addressable sectors = 156301488 Capabilities: LBA, IORDY(can be disabled) Buffer size: 2048.0kB ECC bytes: 40 Queue depth: 1 Standby timer values: spec'd by standard, with device specific minimum r/w multiple sector transfer: Max = 16 Current = 16 DMA: mdma0 mdma1 mdma2 udma0 udma1 *udma2 udma3 udma4 udma5 Cycle time: min=120ns recommended=120ns PIO: pio0 pio1 pio2 pio3 pio4 Cycle time: no flow control=120ns IORDY flow control=120ns Commands/features: Enabled Supported: * READ BUFFER cmd * WRITE BUFFER cmd * Host Protected Area feature set * look-ahead * write cache * Power Management feature set Security Mode feature set * SMART feature set SET MAX security extension * DOWNLOAD MICROCODE cmd Security: supported not enabled not locked not frozen not expired: security count not supported: enhanced erase HW reset results: CBLID- above Vih Device num = 1 determined by the jumper Checksum: correct --=.QHogtuCyy'Yzr? Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (GNU/Linux) iD8DBQE8IiK/vIHrJes3kVIRAtQVAJ92rk4ZEy8wTQjr4OYiD857JMiyTgCgsImq Cs6otlOgrJqKYQ298BqoL/A= =qKr+ -----END PGP SIGNATURE----- --=.QHogtuCyy'Yzr?-- - 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/