Messages in this thread | | | Date | Sun, 20 Apr 2014 21:59:23 +0100 | From | Mel Gorman <> | Subject | Re: [PATCH 0/2] Disable zone_reclaim_mode by default v2 |
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On Fri, Apr 18, 2014 at 04:48:25PM -0400, John Stoffel wrote: > >>>>> "Andrew" == Andrew Morton <akpm@linux-foundation.org> writes: > > Andrew> On Tue, 8 Apr 2014 09:22:58 +0100 Mel Gorman <mgorman@suse.de> wrote: > >> Changelog since v1 > >> o topology comment updates > >> > >> When it was introduced, zone_reclaim_mode made sense as NUMA distances > >> punished and workloads were generally partitioned to fit into a NUMA > >> node. NUMA machines are now common but few of the workloads are NUMA-aware > >> and it's routine to see major performance due to zone_reclaim_mode being > >> enabled but relatively few can identify the problem. > > > This is unclear here. "see major performance <what> due" doesn't make > sense to me. >
Degradation
-- Mel Gorman SUSE Labs
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