Re: acpicpu slowing down computer [was Re: firefox slowness -- X server problem?]

[<rjs%fdy2.demon.co.uk@localhost>]

Thomas Klausner wrote:
>On Wed, Aug 18, 2010 at 07:10:21PM +0200, Jens Rehsack wrote:
>> I've read something regarding a select() change on current@. When this was
>> introduced first time, my firefox or xchat was unbearably slow, even 
>> switching
>> between tabs of my gnome-terminal takes up to two seconds.
>> When the codes was taken out for analysis, it was fast again, came back,
>> slow again. I currently play around with Xen, and subjective feeling,
>> running a Xen system is slightly faster than native (except compiling 
>> sources).
>> Probably it's a hallucination (because the pausing when switching context
>> is extremely nerving), but I hadn't time to take a deeper look.
>
>Following your comment, I tried switching kernels, leaving the
>userland alone.
>
>Going back to a kernel from 20100702, firefox was fast again.
>I looked at the dmesg differences and found that I had enabled acpicpu
>in the meantime. I rebuilt a kernel using sources from yesterday, but
>disabling acpicpu, and firefox is still fast; with a kernel from
>yesterday and acpicpu enabled, it is slow.

I'm not using acpicpu on my system.

It isn't as slow as you describe but is slower than it used to be.

Robert Swindells