Messages in this thread | | | From | Tom Winkler <> | Subject | poor IDE performance on ASUS P4PE with WD800JB | Date | Sun, 26 Jan 2003 20:39:38 +0100 |
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Hi,
I've asked this question in several Newsgroups but nobody was really able to answer it. That's why I decided to send it to LKM. Please CC me on your replies. Thanks!
I've got a question related to ide performance. First of all my hardware: Mainboard: ASUS P4PE (using onboard IDE but not S-ATA) http://www.asus.com/products/mb/socket478/p4pe/overview.htm Harddisk: Western Digital WD800JB http://www.westerndigital.com/products/products.asp?DriveID=32
Now about the current performance (on 2.4.20 and almost the same on 2.5.56):
tom@storm:~$ sudo hdparm -tT /dev/hda /dev/hda: Timing buffer-cache reads: 128 MB in 0.27 seconds =474.07 MB/sec Timing buffered disk reads: 64 MB in 3.05 seconds = 20.98 MB/sec
The cache read time is pretty ok but the disk read time is below of what I'd have expected. My expectations would have been around 40MB/sec.
Am I wrong with my expectations for this setup? I'd really be interested in any suggestion about how I could omptimize the system.
And here's some more information about the current settings (let me know if you need anything else):
tom@storm:~$ sudo hdparm /dev/hda /dev/hda: multcount = 16 (on) I/O support = 3 (32-bit w/sync) unmaskirq = 1 (on) using_dma = 1 (on) keepsettings = 0 (off) nowerr = 0 (off) readonly = 0 (off) readahead = 255 (on) geometry = 9729/255/63, sectors = 156301488, start = 0 busstate = 1 (on)
tom@storm:~$ sudo cat /proc/ide/hda/settings name value min max mode ---- ----- --- --- ---- acoustic 0 0 254 rw address 0 0 2 rw bios_cyl 9729 0 65535 rw bios_head 255 0 255 rw bios_sect 63 0 63 rw breada_readahead 255 0 255 rw bswap 0 0 1 r current_speed 69 0 69 rw failures 0 0 65535 rw file_readahead 16384 0 16384 rw ide_scsi 0 0 1 rw init_speed 69 0 69 rw io_32bit 3 0 3 rw keepsettings 0 0 1 rw lun 0 0 7 rw max_failures 1 0 65535 rw max_kb_per_request 255 1 255 rw multcount 16 0 16 rw nice1 1 0 1 rw nowerr 0 0 1 rw number 0 0 3 rw pio_mode write-only 0 255 w slow 0 0 1 rw unmaskirq 1 0 1 rw using_dma 1 0 1 rw wcache 0 0 1 rw
tom@storm:~$ sudo hdparm -I /dev/hda /dev/hda: non-removable ATA device, with non-removable media Model Number: WDC WD800JB-00CRA1 Serial Number: WD-WMA8E3710419 Firmware Revision: 17.07W17 Standards: Supported: 1 2 3 4 5 Likely used: 5 Configuration: Logical max current cylinders 16383 16383 heads 16 16 sectors/track 63 63 bytes/track: 57600 (obsolete) bytes/sector: 600 (obsolete) current sector capacity: 16514064 LBA user addressable sectors = 156301488 Capabilities: LBA, IORDY(can be disabled) Buffer size: 8192.0kB 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 = 0 determined by the jumper Checksum: correct
A full dmesg dump can be found at http://www.wnk.at/files/dmesg.txt
Thanks very much, -- Tom Winkler - 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/
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