Mark Knecht <markknecht <at> gmail.com> writes:
>
> Hi James,
> Typically run hdparm -tT /dev/hda to test the effect of the
> settings you make. the numbers are not 'real' but they are useful.
Yea, I've seen/used this syntax/test before, but, I'm not too sure
how robust it is.
Here's my results after a reboot:
/dev/hda:
multcount = 16 (on)
IO_support = 0 (default 16-bit)
unmaskirq = 0 (off)
using_dma = 1 (on)
keepsettings = 0 (off)
readonly = 0 (off)
readahead = 256 (on)
geometry = 16383/255/63, sectors = 60011642880, start = 0
icelander:/home/james# hdparm -tT /dev/hda
/dev/hda:
Timing cached reads: 1860 MB in 2.00 seconds = 930.14 MB/sec
Timing buffered disk reads: 116 MB in 3.02 seconds = 38.35 MB/sec
NOW:
icelander:/home/james# hdparm -d 1 -A 1 -m 16 -u 1 -c1 -a 256 /dev/hda
/dev/hda:
multcount = 16 (on)
IO_support = 1 (32-bit)
unmaskirq = 1 (on)
using_dma = 1 (on)
keepsettings = 0 (off)
readonly = 0 (off)
readahead = 256 (on)
geometry = 16383/255/63, sectors = 60011642880, start = 0
icelander:/home/james# hdparm -tT /dev/hda
/dev/hda:
Timing cached reads: 1860 MB in 2.00 seconds = 929.68 MB/sec
Timing buffered disk reads: 116 MB in 3.03 seconds = 38.30 MB/sec
Hard to believe that 32bit mode, and the other settings make no difference
in performance.
hdparm -i /dev/hda shows:
Model=HTS726060M9AT00, FwRev=MH4OA68A, SerialNo=MRH403M4GLMLKB
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
BuffType=DualPortCache, BuffSize=7877kB, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=117210240
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: mode=0x80 (128) WriteCache=enabled
Drive conforms to: ATA/ATAPI-6 T13 1410D revision 3a:
Which *udma5 selected may not need these other settings.
I'm just not sure why
hdparm -k1 /dev/hda
does not permanently save settings, after a reboot. Googling
does not produce anything useful. Surely I do not have to embedded
these hdparm settings to get activated upon reboot?
Surely we have a HD(hdparm) expert somewhere in the Gentoo community?
James
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