On Sunday 10 February 2002 06:38 am, Bertrik Sikken wrote: >Hi, > >Gunther Mayer wrote: >> 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 corresponds to about 50K/sec for 'uhci' (and the scanner >> must stop'n'start) ! >> >> Is this a known bug in "uhci" ? > >I found something similar, with transfer rates below 100 kB/s >while it was something like 700 kB/s before, resulting in >heavy backtracking of the scanner head of my HP3300 scanner. >I too used (a custom compiled) kernel 2.4.17, libusb 0.1.4 and >uhci (compiled as module). Using the usb-uhci module instead of >the uhci module solved it for me. I did not further research the >issue, so I can't really tell for sure what caused the problem. > >Regards, >Bertrik Sikken
How are you fellows effecting this change in usb drivers? Here, on an M7VIB mobo, 1400mhz AthlonDX, I have uhci compiled in and have noted no such problems. Now on my other machine, a TYAN TRINITY 100 mobo, any uhci eventulluy crashes if more than a mouse is used on the bus. -- Cheers, Gene AMD K6-III@500mhz 320M Athlon1600XP@1400mhz 512M 98.5+% setiathome rank, not too shabby for a hillbilly _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
