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Old 12-03-2003, 12:35 AM   #1
GD_19
LQ Newbie
 
Registered: Aug 2003
Distribution: Gentoo
Posts: 28

Rep: Reputation: 15
USB problems with 2.6.0test11 - LOW system responsiveness


Hi!

I have switched to the 2.6 kernel series due to the higher performance and advanced features offered but there still are a few issues to be solved. One problem I cannot figure out a solution for is that whevever there is USB activity going (which in my system equals to ACM usb modem activity since I do not use any other USB device under linux), the system becomes very sluggish. Had it not been for the preemtible kernel function I suppose I wouldn't be able to use the system at all while data is flowing to/ftom the /dev/usb/ttyACM0 device!

There is no such issue under 2.4.22 or 2.4.23.

Do you have any idea of what could be wrong? Any suggestions would be greatly appreciated

Thanks!
GD
 
Old 12-03-2003, 02:31 AM   #2
GD_19
LQ Newbie
 
Registered: Aug 2003
Distribution: Gentoo
Posts: 28

Original Poster
Rep: Reputation: 15
I forgot to mention: I have tried to use both the OHCI and the EHCI USB ports of my mobo. Here's a brief system config I should have posted anyway:

abit nf7-s version 2.0 (nforce2 400 mobo)
256MB DDR266
axp2400+
matrox g400MAX gfx
WD120JB HD
Fedora Core 1 Linux
M-audio audiophile 2496 sound card AND nforce2 audio
nforce LAN (using reverse engineered forcedeth open source driver built in the kernel)

i have uploaded the .config used to compile the kernel at http://hwwolf.virtualave.net/temp/keep.config
 
  


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