[sane-devel] Re: [linux-usb-devel] Bad Performance uhci (vs. usb-ohci ,ohci) ->2.4.18pre9 breaks libusb-0.1.4
Gene Heskett
gene_heskett at iolinc.net
Wed Feb 13 03:24:28 GMT 2002
On Tuesday 12 February 2002 03:30 pm, Gunther Mayer wrote:
>Greg KH wrote:
>> On Sun, Feb 10, 2002 at 11:10:07AM +0100, Gunther Mayer wrote:
>> > Hi,
>> > the "uhci" module suffers from very bad performance
>> > (linux-2.4.17).
>> >
>> > Scanning 150dpi A4 (merlin670 for Canon N670U over
>> > libusb-0.1.4) gives: uhci: 135 sec.
>> > usb-uhci: 43 sec.
>> > ohci: 35 sec
>>
>> This should be fixed in the latest 2.4.18-pre patches. Can
>> you grab the latest one, and let us know if you still have the
>> same problems with the uhci driver?
>
>2.4.18pre9 breaks "libusb-0.1.4" and so my application:
>
> mc:~/libusb-0.1.4/tests # ./testlibusb
> bus/device idVendor/idProduct
> bus=0x8049de8 dev=0x1029
> 001
> Segmentation fault (core dumped)
Thats not all it breaks folks, iptables (last release) gets a
very upset tummy over it, so I'm back to 2.4.17 with the
scheduler patches.
Message duely sent to Mathias of course. And no answer just yet.
--
Cheers, Gene
AMD K6-III at 500mhz 320M
Athlon1600XP at 1400mhz 512M
98.5+% setiathome rank, not too shabby for a hillbilly
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