Sadly I confirm the problem also on Jaunty, with the same configuration
described above.
/dev/sda:
Timing cached reads: 1744 MB in 2.00 seconds = 872.40 MB/sec
Timing buffered disk reads: 88 MB in 3.03 seconds = 29.05 MB/sec
/dev/sda:
IO_support = 0 (default)
readonly = 0 (off)
readahead = 256 (on)
geometry = 12161/255/63, sectors = 195371568, start = 0
Model=ST9100822A , FwRev=3.01 , SerialNo=
3LG1CH85
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
BuffType=unknown, BuffSize=8192kB, MaxMultSect=16, MultSect=?16?
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=195371568
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
UDMA modes: udma0 udma1 udma2 udma3 udma4 *udma5
AdvancedPM=yes: unknown setting WriteCache=enabled
Drive conforms to: ATA/ATAPI-6 T13 1410D revision 2: ATA/ATAPI-1,2,3,4,5,6
* signifies the current active mode
** Attachment added: "dmesg_ata"
http://launchpadlibrarian.net/26244552/dmesg_ata
--
Slow SATA performance
https://bugs.launchpad.net/bugs/119730
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