On Tue, 19 Feb 2008 17:34:59 +1100 Nick Piggin <[EMAIL PROTECTED]> wrote:
> On Tuesday 19 February 2008 16:44, KOSAKI Motohiro wrote: > > background > > ======================================== > > current VM implementation doesn't has limit of # of parallel reclaim. > > when heavy workload, it bring to 2 bad things > > - heavy lock contention > > - unnecessary swap out > I think it should maybe be a per-zone thing... > > What happens if you make it a per-zone mutex, and allow just a single > process to reclaim pages from a given zone at a time? I guess that is > going to slow down throughput a little bit in some cases though... I agree, doing things per zone will probably work better, because that way one process can do page reclaim on every NUMA node at the same time. -- All rights reversed. -- 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/
