Re: [PATCH 13/15] sched: Set preferred NUMA node based on number ofprivate faults

[Peter Zijlstra]

On Sat, Jul 06, 2013 at 12:09:00AM +0100, Mel Gorman wrote:
> The third reason is that multiple threads in a process will race each
> other to fault the shared page making the fault information unreliable.

Ingo and I played around with that particular issue for a while and we had a
patch that worked fairly well for cpu bound threads and made sure the
task_numa_work() thing indeed interleaved between the threads and wasn't done
by the same thread every time.

I don't know what the current code does and if that is indeed still an issue.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/