Thomas Molina wrote:
>
> On Mon, 29 Dec 2003, Linus Torvalds wrote:
>
>
>>
>>On Mon, 29 Dec 2003, Thomas Molina wrote:
>>
>>>I just finished a couple of comparisons between 2.4 and 2.6 which seem to
>>>confirm my impressions. I understand that the comparison may not be
>>>apples to apples and my methods of testing may not be rigorous, but here
>>>it is. In contrast to some recent discussions on this list, this test is
>>>a "real world" test at which 2.6 comes off much worse than 2.4.
>>
>>Are you sure you have DMA enabled on your laptop disk? Your 2.6.x system
>>times are very high - much bigger than the user times. That sounds like
>>PIO to me.
>
>
>
> Sorry. One other bit of data from 2.6:
>
> [root _at_ lap bitkeeper]# hdparm -i /dev/hda
>
> /dev/hda:
>
> Model=IBM-DJSA-220, FwRev=JS4OAC3A, SerialNo=44V44FT3300
> Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
> RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
> BuffType=DualPortCache, BuffSize=1874kB, MaxMultSect=16, MultSect=16
> CurCHS=17475/15/63, CurSects=16513875, LBA=yes, LBAsects=39070080
> 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
> AdvancedPM=yes: mode=0x80 (128) WriteCache=enabled
> Drive conforms to: ATA/ATAPI-5 T13 1321D revision 1:
>
> * signifies the current active mode
What mode does 2.4 use?
--
bill davidsen <davidsen _at_ tmr.com>
CTO TMR Associates, Inc
Doing interesting things with small computers since 1979
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