RELENG_7 jerky mouse and skipping sound (still a problem -BETA3)

[Kris Kennaway]

David E. Thiel wrote:
> On Sun, Dec 30, 2007 at 11:12:26PM +0100, Kris Kennaway wrote:
>>> FWIW, the problem remains for me. Still terrible performance
>>> during compiles.
>> OK.  Instead of going over all of the usual questions again, can you point 
>> me to a previous mail in which you explain your observations and test 
>> results in detail?
> 
> The most recent is http://marc.info/?l=freebsd-stable&m=119428719505129&w=2, but
> it started way back at http://marc.info/?l=freebsd-current&m=118998090512027&w=2.
> 
> I've tried a lot of stuff in between, and all I've been able to narrow
> it down to is that it's not a display driver issue, and that none of
> my swap partition is getting used, so that's not the problem. During
> compiles, my UP system with ULE still gets very unresponsive when
> compiling, sometimes taking up to 10 seconds just to draw a new terminal
> window. Even changing focus with the window manager can take several
> seconds. I'd like to provide more info, but I'm not sure what stats
> are useful for this particular issue. Please let me know. 
> 
> dmesg is at http://redundancy.redundancy.org/dmesg.txt, and kernel
> config is at http://redundancy.redundancy.org/DEEPTHOUGHT. Even though
> I'm still getting reported 80-95% memory utilization and no paging,
> I'm going to get an extra gig of RAM on order to see if that improves
> things. 2G of ram for a desktop, what's the world coming to? ;)

OK, can you obtain a schedgraph trace when the problem is manifesting? 
See /usr/src/tools/sched/ and previous discussion in this or related 
threads.

Kris