Comment 84 for bug 131094

Hi Leann,

I have tried a kernel from kernel.org under Gutsy, because I cannot work on my machine anymore.
The interrupt issue seems to be a problem of my kernel-build.

With two writing and two reading disc access under Hardy 2.6.24-11-generic:
  27,1% (173,7) <kernel IPI> : Rescheduling interrupts
  20,4% (130,4) USB device 1-1 : BCM2045B (Broadcom Corp)
  15,6% (100,0) <interrupt> : uhci_hcd:usb1
  10,3% ( 66,0) <interrupt> : libata
   9,5% ( 60,9) <interrupt> : uhci_hcd:usb3, yenta, nvidia
   5,7% ( 36,8) dd : blk_plug_device (blk_unplug_timeout)

Hardy is a fresh test installation and with all updates

The problem was there under the 2.6.24-10 kernel.
2.6.24-10-generic #1 SMP Fri Feb 22 18:26:06 UTC 2008 x86_64 GNU/Linux

Now I try the 2.6.24-11 kernel.
2.6.24-11-generic #1 SMP Fri Feb 29 21:26:31 UTC 2008 x86_64 GNU/Linux
(Ubuntu 2.6.24-11.17-generic)

I have only made some tests on this kernel, but there are hang-ups, when there are disc activities. E.g. switching a desktop last 2 seconds, the response of selecting icons on the desktops is executed after 2-4 seconds. Sometimes the main menu stays still there and freezes after a program has been started for many seconds. Firefox hangs for 20 - 30 seconds (i think it' s a firefox problem).
The problem does not occur regular and there are periods when the systems works smooth. But from time to time (20s - 10min) the problem occurs every few seconds.

Can I make something to help solve the problem?