Hello
Today I install hdparm and test HDDs on my servers and get this data:
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# hdparm -i /dev/hda
/dev/hda:
Model=ST31000340NS, FwRev=SN06, SerialNo=9QJ5LWPL
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
BuffType=unknown, BuffSize=0kB, 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 pio1 pio2 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 udma2
AdvancedPM=no WriteCache=enabled
Drive conforms to: unknown: ATA/ATAPI-4 ATA/ATAPI-5 ATA/ATAPI-6 ATA/ATAPI-7
* signifies the current active mode
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# hdparm -Tt /dev/hda
/dev/hda:
Timing cached reads: 8692 MB in 2.00 seconds = 4353.79 MB/sec
Timing buffered disk reads: 12 MB in 3.09 seconds = 3.88 MB/sec
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I think most important here it's "BuffSize=0kB" and "Timing buffered disk reads
... 3.88 MB/sec" is so small.
This is link to official specification page. This hard drive contain 32MB
buffer.
Also it's CentOS 5.4 on board and #uname -a => Linux A102 2.6.18-164.11.1.el5
#1 SMP Wed Jan 20 07:32:21 EST 2010 x86_64 x86_64 x86_64 GNU/Linux
In attach I put dmesg, dmidecode and df data.
Who can help me. Maby need some drivers o something other?
** Attachment added: "Additional server data"
http://launchpadlibrarian.net/38648210/server-A102.txt
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Hard drive BuffSize=0kB
https://bugs.launchpad.net/bugs/31072
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