On Mon, 25 Apr 2005, James wrote:
>
> 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
>
Hi,
Take a shot to bonnie. I run it to test HD performance.
HTH.
Cheers,
Tamas Sarga Sárga Tamás
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