On Sat, Mar 10, 2007 at 08:19:18AM +1100, Con Kolivas wrote: > On Saturday 10 March 2007 08:07, Con Kolivas wrote: > > On Saturday 10 March 2007 07:46, Matt Mackall wrote: > > > My suspicion is the problem lies in giving too much quanta to > > > newly-started processes. > > > > Ah that's some nice detective work there. Mainline does some rather complex > > accounting on sched_fork including (possibly) a whole timer tick which rsdl > > does not do. make forks off continuously so what you say may well be > > correct. I'll see if I can try to revert to the mainline behaviour in > > sched_fork (which was obviously there for a reason). > > Wow! Thanks Matt. You've found a real bug too. This seems to fix the qemu > misbehaviour and bitmap errors so far too! Now can you please try this to see > if it fixes your problem?
Sorry, it's about the same. I now suspect an accounting glitch involving pipe wake-ups. 5x memload: good 5x execload: good 5x forkload: good 5 parallel makes: mostly good make -j 5: bad So what's different between makes in parallel and make -j 5? Make's job server uses pipe I/O to control how many jobs are running. -- Mathematics is the supreme nostalgia of our time. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
