Am Mittwoch 11 Juli 2007 14:30 schrieb Florian Philipp:
> Am Mittwoch 11 Juli 2007 10:01 schrieb Alexander Skwar:
> > Hello.
> >
> > Yesterday, I installed gentoo-sources-2.6.22. When I now boot this new
> > kernel, I notice that all of a sudden my SATA disk is addressed with
> > /dev/hda, whereas it used to be addressed with /dev/sda in 2.6.21. Why's
> > that?
> >
> > But much more important: The IDE performance is now extremely bad.
> >
> > ,----[ hdparm -tT /dev/hda, kernel 2.6.22 ]
> >
> > | /dev/hda:
> > | Timing cached reads: 2414 MB in 2.00 seconds = 1208.28 MB/sec
> > | Timing buffered disk reads: 8 MB in 3.99 seconds = 2.00 MB/sec
> >
> > `----
> >
> > With 2.6.21, it's A LOT faster:
> >
> > ,----[ hdparm -tT /dev/sda, kernel 2.6.21 ]
> >
> > | /dev/sda:
> > | Timing cached reads: 2414 MB in 2.00 seconds = 1207.80 MB/sec
> > | Timing buffered disk reads: 150 MB in 3.01 seconds = 49.76 MB/sec
> >
> > `----
> >
> > The drive is (is?) running with udma5 in both cases, according to
> > hdparm:
> >
> > ,----[ hdparm -Him /dev/sda, kernel 2.6.21 ]
> >
> > | /dev/sda:
> > | drive temperature (celsius) is: 42
> > | drive temperature in range: yes
> > | HDIO_GET_MULTCOUNT failed: Inappropriate ioctl for device
> > |
> > | Model=Hitachi HTS721010G9SA00 , FwRev=MCZOC10H,
> > | SerialNo= MPCZN7Y0H7E5VL Config={ HardSect NotMFM HdSw>15uSec
> > | Fixed DTR>10Mbs }
> > | RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
> > | BuffType=DualPortCache, BuffSize=7538kB, MaxMultSect=16, MultSect=?8?
> > | CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=195371568
> > | 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-7 T13 1532D revision 1:
> > | ATA/ATAPI-2,3,4,5,6,7
> > |
> > | * signifies the current active mode
> >
> > `----
> >
> > ,----[ hdparm -Him /dev/hda, kernel 2.6.22 ]
> >
> > | /dev/hda:
> > | drive temperature (celsius) is: 41
> > | drive temperature in range: yes
> > | multcount = 16 (on)
> > |
> > | Model=Hitachi HTS721010G9SA00, FwRev=MCZOC10H, SerialNo=MPCZN7Y0H7E5VL
> > | Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
> > | RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
> > | BuffType=DualPortCache, BuffSize=7538kB, MaxMultSect=16, MultSect=16
> > | CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=195371568
> > | 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-7 T13 1532D revision 1:
> > | ATA/ATAPI-2,3,4,5,6,7
> > |
> > | * signifies the current active mode
> >
> > `----
> >
> > What do I have to do, so that the drive is fast in kernel 2.6.22 as
> > well?
> >
> > I'm booting the 2.6.22 kernel with this entry in grub menu.lst:
> >
> > ,----[ kernel 2.6.22 ]
> >
> > | title Gentoo GNU/Linux (zuletzt gebauter Kernel mit hda)
> > | root (hd0,2)
> > | kernel /vmlinuz root=/dev/hda6 lapic libata.atapi_enabled=1
> > | combined_mode=libata
> >
> > `----
> >
> > Kernel 2.6.21 is started with the following entry in grub:
> >
> > ,----[ kernel 2.6.21 ]
> >
> > | title Gentoo GNU/Linux (vorletzter gebauter Kernel)
> > | root (hd0,2)
> > | kernel /vmlinuz.old root=/dev/sda6 lapic libata.atapi_enabled=1
> > | combined_mode=libata
> >
> > `----
>
> I had the same problem on my laptop. You have to deactivate generic drivers
> in your kernel. (Stuff like Generic ATA Support)Wow, 8.5 hours delay...
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