Messages in this thread | | | From | Bill Davidsen <> | Subject | Re: 2.6.0 performance problems | Date | Sat, 03 Jan 2004 14:37:02 -0500 |
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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@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@tmr.com> CTO TMR Associates, Inc Doing interesting things with small computers since 1979 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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