DragonFly kernel List (threaded) for 2004-07
Re: Scheduler patch 03 available for testing
On Sat, 24 Jul 2004, Matthew Dillon wrote:
> :ok, that works ;]
> :must say my box is working fine, stream music works while doing
> :make -j10 buildworld. ony minor point is that swapping workspaces
> :in X is slow when the box is compiling.
> This will depend heavily on how much memory your system has. Since we
> do not schedule I/O yet, only CPU, any disk intensive activity will
> interfere with (slow down) paging activity. So if you don't have a lot
> of memory there are going to be issues.
> Use 'systat -vm 1' or 'vmstat 1' in an xterm to observe paging activity.
> If you aren't paging there could still be a scheduling issue.
> Also note that certain programs, like Mozilla, which can eat a ton of cpu
> for periods of several seconds when loading pages, may still be adversely
> effected by a background buildworld. This is because it's fairly
> difficult to discern between a cpu-guzzling mozilla and a cpu-guzzling
> compile :-)
> Matthew Dillon
Hi Matt ;]
i runned vmstat and indeed it is page faulting but i don't now what the
expected values are. when i'm just running X page fault are ~ 1000, when
the box is busy compiling faults are 8000-20000 with peaks at 25000.
what i noticed is that if i dont use the -j10 the box remains responsive.
i dont think its a memory issue, i've got 512 meg in this box.