Messages in this thread | | | Date | Mon, 14 Jun 2010 17:46:46 -0400 | From | tytso@mit ... | Subject | Re: Why is kslowd accumulating so much CPU time? |
| |
On Mon, Jun 14, 2010 at 02:42:44PM -0400, Nick Bowler wrote: > > This sounds exactly like the issue I've been seeing on a T500 laptop, as > well (GM45 board). The slowdowns render the system essentially > unusable, as it can spend a loooong time just moving the mouse cursor a > few pixels on the screen. During this time, nothing else on the display > is updating (glxgears drops to 0fps). Things generally seem to be > working fine if I am not moving the mouse, or if I'm not running X.
I saw exactly the same behaviour when using the Ubuntu Karmic userspace. Basically, using a 2.6.35-rc2 (+ vt memory corrupter fix) kernel, the system was essentially unusable. Interestingly, the problem went away (with the same kernel) once I updated to Ubuntu Lucid. I was going to mention that so that hopefully someone with far more X.org-fu than I could figure out how much of this is a X server bug, and how much of this was a kernel bug, but things worked just *fine* with 2.6.34 kernel.
Occasionally it will happen that the mouse stops tracking, and then I grumble and curse, and a few seconds later it resolves itself. I haven't had time to track it down; but the problem was breathtakingly easy to reproduce with an Ubuntu Karmic userspace. :-)
- Ted
| |