I've just measured my drive reading time and found out that it's
3.5-4.9MB/s (measured in Midnight Commander by copying a not yet cached
file to /dev/null). Then I plugged a USB drive (an HDD box) and tried
checking, it's 15-20MB/s, this isn't funny! I have ASUS F3Jp laptop (I
have no settings in my BIOS) and now I see this was the reason of of bug
#126274 and bug #131094 at least in my case.
[EMAIL PROTECTED]:~$ sudo hdparm -i /dev/sda
/dev/sda:
Model=Hitachi HTS541612J9SA00 , FwRev=SBDOC70P, SerialNo=
SB3D00E5G0D07A
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
BuffType=DualPortCache, BuffSize=7516kB, MaxMultSect=16, MultSect=?16?
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=234441648
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 udma3 udma4 *udma5
AdvancedPM=yes: mode=0x80 (128) WriteCache=enabled
Drive conforms to: ATA/ATAPI-7 T13 1532D revision 1: ATA/ATAPI-2,3,4,5,6,7
* signifies the current active mode
I don't understand this, since I see udma5 marked as active in hdparm's
output. (?)
--
Slow SATA performance
https://bugs.launchpad.net/bugs/119730
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