Re: 2.6.21-rc3-mm1 RSDL results

Matt Mackall
2007-03-10T01:55:02Z

On Sat, Mar 10, 2007 at 12:28:38PM +1100, Con Kolivas wrote:
> On Saturday 10 March 2007 11:49, Matt Mackall wrote:
> > On Sat, Mar 10, 2007 at 11:34:26AM +1100, Con Kolivas wrote:
> > > Ok, so some of the basics then. Can you please give me the output of 'top
> > > -b' running for a few seconds during the whole affair?
> >
> > Here you go:
> >
> > http://selenic.com/baseline
> > http://selenic.com/underload
> >
> > This is with 2.6.20+rsdl+tickfix at HZ=250.
> >
> > Something I haven't mentioned about my setup is that I'm using ccache.
> > And it turns out disabling ccache makes a large difference. Going to
> > switch back to a NO_HZ kernel and see what that looks like.
>
> Your X is reniced to -10 so.... try again with X nice 0 please.

Doh, can't believe I didn't notice that. That's apparently a default
in Debian/unstable (not sure where to tweak it). Reniced:

without ccache with ccache
make -j 5
beryl good ok
galeon ok/good ok
mp3 good good
terminal good ok
mouse good ok

We're still left with a big unexplained ccache differential, and a big
NO_HZ vs HZ=250 differential.

--
Mathematics is the supreme nostalgia of our time.