On Thu, 5 Jan 2006, Helmut Toplitzer wrote:
> > Got to admit, I don't understand why stopping lircd should reduce your
> > disk performance. Does restarting it cause the performance to improve
> > again?
>
>
> No. It never gets back until a new reboot and the same procedure.
> So --- Are there any hints where to insert some debug-code? Currently
> using 2.6.15 kernel. Took a first look on the VIA-PCI-IDE handling code.
> But it looks that by spec there's only a bad AdressSetupTiming:
> /linux-2.6.15/drivers/ide/pci/via82cxxx.c: 85
> { "vt8235", PCI_DEVICE_ID_VIA_8235,
> 0x00, 0x2f, VIA_UDMA_133 | VIA_BAD_AST },
>
> I have not done hardware programming for the last 7 years (and it was
> just very basic programming that time). So me digging
> through the code is not very effective ;-)
>
>
> I'm thankful for every help - even if you just redirect me to an
> other person to ask.
I don't have any bright ideas about where exactly the problem might be.
A good start would be to set up a cleaner testing environment.
Disable the lircd service so that it doesn't get started automatically,
and rename the /lib/modules/`uname -r`/kernel/drivers/usb/host/uhci-hcd.ko
file so that it doesn't loaded automatically either. Then reboot, and
you'll have a pristine set up for testing the effects of ehci-hcd.
Alan Stern
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