On Sun, Aug 29, 2004 at 09:58:16AM +0800, John Summerfield wrote:
>
> >>>kowari:~# hdparm -t /dev/hd{a,g}{,}
> >>>
> >>>/dev/hda:
> >>>Timing buffered disk reads: 152 MB in 3.02 seconds = 50.33 MB/sec
> >>>/dev/hda:
> >>>Timing buffered disk reads: 152 MB in 3.02 seconds = 50.33 MB/sec
> >>>
> >>>/dev/hdg:
> >>>Timing buffered disk reads: 120 MB in 3.02 seconds = 39.74 MB/sec
> >>>
> >>>/dev/hdg: Timing buffered disk reads: 120 MB in 3.00 seconds =
> >>>40.00 MB/sec
> >>>kowari:~# uname -r
> >>>2.4.26-1-k7
> >>>kowari:~#
> >>>
> >>>
> >>I have further results, and I've just filed a bug report (confirmation
> >>not in yet so no no).
> >>kowari:~# hdparm -t /dev/hd{a,g}{,}
> >>
> >>/dev/hda:
> >>Timing buffered disk reads: 112 MB in 3.05 seconds = 36.73 MB/sec
> >>
> >>/dev/hda:
> >>Timing buffered disk reads: 110 MB in 3.00 seconds = 36.64 MB/sec
> >>
> >>/dev/hdg:
> >>Timing buffered disk reads: 118 MB in 3.01 seconds = 39.21 MB/sec
> >>
> >>/dev/hdg:
> >>Timing buffered disk reads: 120 MB in 3.01 seconds = 39.83 MB/sec
> >>kowari:~# uname -r
> >>2.6.8-1-k7
> >>kowari:~#
> >>
> >>
> >>It's a self-built kernel, but without modification.
> >>
> >>I neglected to include a modules listing in the bug report. Here are
> >>those myst likely to be involved:
> >>ide_generic 1472 0
> >>sis5513 16776 1
> >>hpt366 22788 2
> >>ide_disk 19264 5 hpt366
> >>ide_core 138776 5
> >>usb_storage,ide_generic,sis5513,hpt366,ide_disk
> >>sd_mod 21632 0
> >>ata_piix 8132 0
> >>libata 41348 1 ata_piix
> >>scsi_mod 124620 3 usb_storage,sd_mod,libata
> >>unix 28592 170
> >>
> >>
> >
> >I wonder if your ide chipset got correctly detected (aparently), and if dma
> >and other such parameters are identic.
> >
> >
> >
> The sis5513 is plausible, I know it is used for earlier SiS chipsets.
> Here are the kernel messages I think relevant:
> PCI: Probing PCI hardware (bus 00)
> Uncovering SIS963 that hid as a SIS503 (compatible=0)
> Enabling SiS 96x SMBus.
> ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
I asked because another guy (with a piix chipset though), was claiming that
his chipset was not detected, and thus that dma was not activated.
Friendly,
Sven Luther
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