On Mon, 11 Jul, at 09:58:52AM, Dietmar Eggemann wrote: > This difference in the initial se->avg.load_avg value [0 or 1024] has an > influence in wake_affine() [weight = p->se.avg.load_avg;] for the wakeup > handling of the hackbench tasks in the 'send/receive data' phase. The way I was running hackbench made it very susceptible to changes in fork behaviour, i.e. running it with a small number of loops.
> There are a couple of patches on tip/sched/core which might change the > behaviour of this: fork path, no double attach_entity_load_avg for new > task, no remove_entity_load_avg for new task, changes in effective_load ... Indeed they do! Things are much improved when running the latest tip/sched/core, thanks for the pointer.
