On Thu, 2009-07-02 at 07:12 -0400, Josh Boyer wrote: > On Thu, Jul 02, 2009 at 05:33:12PM +1000, Benjamin Herrenschmidt wrote: > >On Wed, 2009-07-01 at 20:14 -0400, Josh Boyer wrote: > > > >> I've toyed with that idea myself. I keep coming back to the fact that you > >> need > >> a workload that would really leverage it, and I don't have one at the > >> moment. > > > >To some extent that's true but just turning full preemption including > >kernel side with all the associated debug bits and lockdep should make a > >whole bunch of things show up even with ordinary workloads. > > I can look at doing that for ppc44x_defconfig. I'll be honest and say I don't > expect it to go well, particularly with lockdep :). > > >For 440 tend to boot an ubuntu distro off NFS root with all X & DRI 3D > >etc... and then run compiz :-) > > Yes. Because that's a totally realistic workload for a 440. I'm surprised > you > don't have a p595 machine acting as your home router too! ;)
It doesn't need to be realistic. In fact, a "realistic" workload is the worst thing to test with because it won't exercise all the "uncommon" code path which are the ones likely to bite. So yesm it's not a "realistic" workload, but it's a good "torture" workload to find bugs. Cheers, Ben. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
