Bad hdd performance
Hi,
I made a new server. Asrock N68PV-GS (http://www.asrock.com/mb/overview.asp?Model=N68PV-GS), Athlon 64 X2 5600+, 4 GB ram and a Western Digital Caviar Green WD10EADS 1 TB. I installed CentOs 5.3. I think this is a very basic setup. Nothing really special or exotic. It seems hdd performance is very bad. hdparm -Tt /dev/sda /dev/sda: Timing cached reads: 5208 MB in 2.00 seconds = 2603.57 MB/sec Timing buffered disk reads: 106 MB in 3.07 seconds = 34.48 MB/sec This is almost the same as my 6 year old Pentium 3. hdparm -i /dev/sda /dev/sda: Model=WDC WD10EADS-00L5B1 , FwRev=01.01A01, SerialNo= WD-WCAU48430253 Config={ HardSect NotMFM HdSw>15uSec SpinMotCtl Fixed DTR>5Mbs FmtGapReq } RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=50 BuffType=unknown, BuffSize=32767kB, MaxMultSect=16, MultSect=?16? CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=268435455 IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120} PIO modes: pio0 pio3 pio4 DMA modes: mdma0 mdma1 mdma2 UDMA modes: udma0 udma1 udma2 AdvancedPM=no WriteCache=enabled Drive conforms to: Unspecified: ATA/ATAPI-1 ATA/ATAPI-2 ATA/ATAPI-3 ATA/ATAPI-4 ATA/ATAPI-5 ATA/ATAPI-6 ATA/ATAPI-7 * signifies the current active mode hdparm -v /dev/sda /dev/sda: IO_support = 0 (default 16-bit) readonly = 0 (off) readahead = 256 (on) geometry = 56065/255/63, sectors = 1953525168, start = 0 hdparm -c1 /dev/sda /dev/sda: setting 32-bit IO_support flag to 1 HDIO_SET_32BIT failed: Invalid argument IO_support = 0 (default 16-bit) I really don't know what to do. I spent hours surfing, trying to find a solution... But nothing. I posted /var/log/messages on http://www.dimitrivisser.nl/messages Is there someone who can give me an idea/solution ? |
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All I can offer right now is this review from a PC shop owner: Quote:
Doesn't sound very promising. |
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I have no problems buying another hdd, if that's really the problem. What I thought is strange is the output of hdparm -v /dev/sda, 16 bit should be 32 bit. And hdparm -i /dev/sda doesn't show any active udma mode, while the bios says it's udma-6. I thought it was a driver problem. |
My suggestion; download the MHDD boot disk (http://hddguru.com/content/en/software/2005.10.02-MHDD/) and run that on the disk, just the basic scan. Its pretty graphical so you'll be able to get a good idea of what is going on before the scan is done. Word of advice; you see a lot of red, you cancel the scan and start getting data off
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I'd definitely take jamescondron's advice, and start looking for a better drive. |
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