Re: 2.6.8.1-mm3

[Andrew Morton <akpm@osdl.org>]

Thomas Davis <tadavis@lbl.gov> wrote:
>
> Andrew Morton wrote:
> > ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.8.1/2.6.8.1-mm3/
> > 
> > - Added three more bk trees:
> > 
> > 	bk-fb:		Some ARM framebuffer driver (rmk)
> > 	bk-mmc:		ARM-specific media drivers(?)
> > 	bk-watchdog:	watchdog drivers
> > 
> > - I'm totally unclear on what's happening with the release_task
> >   sleep-while-atomic bug, and with the CPU hotplug BUG.  This kernel will
> >   probably emit might_sleep warnings.  Turn off CONFIG_PREEMPT if it gets
> >   irritating.
> > 
> > - Added Nick Piggin's CPU scheduler to see what happens.  See inside the
> >   patch for details.  Please test, benchmark, report.
> > 
> > - This is (very) lightly tested.  Mainly a resync with various parties.
> > 
> 
> Not sure what does what - I'm in the process of going back to 2.6.8.1, and see if any of this goes away..
> 
> 1) the ub device kills my SanDisk 8 in 1 reader (SDDR-88)  I have to yank it out of the USB port to fix it.  fixed by removing the UB device from my config outright.

Hi, Pete.

> 2) do not try to modprobe -r ub; it will do wonky things to your machine (I tried in a KDE Konsole, and lost the keyboard, and the terminal just scrolled blank lines..)

Hi, Pete.

> 3) Interactivity performance when compiling a kernel (make rpm) sucks.  I have a Dell Poweredge 400SC, with a Hyper threaded P4/1GB of ram, ATI Radeon 9600 based video.  Load average jumps to the 4's, and stays there - while each cpu in the hyper thread shows about 50% idle time.  Mouse pointer jumps all over the place, mouse clicks are lost, menus are slow to drop down, etc..

Ingo found a ghastly performance problem with X, but that'll be present in
2.6.8.1 as well.