On Apr 7, 2007, at 1:32 AM, Johnny Billquist wrote:

> Whatever the problem is, it still exists.
> I noted that you checked in some new stuff for GCC, as well as the  
> mutex fixes Michael posted about, Matt. Things look good when  
> booting up, but as soon as I try to do something heavy on the disk,  
> the cpu time runs up to 100% system time, and the system hangs.
> Something is still bad, which was introduced after the 15 of March,  
> and Michael seems to have narrowed it down to something in GCC...  
> Hmmm... Any ideas on how to diagnose this?

I was seeing that problem but after rebuilding gcc and then using  
that gcc
to rebuild a new kernel, disk access returned to normal.  Are you  
rebuilt
the build tools?