Re: [patch v2 1/3] mm: vmscan: fix numa reclaim balance problem in kswapd

2013-08-07 Thread Mel Gorman
On Fri, Aug 02, 2013 at 11:37:24AM -0400, Johannes Weiner wrote: > When the page allocator fails to get a page from all zones in its > given zonelist, it wakes up the per-node kswapds for all zones that > are at their low watermark. > > However, with a system under load the free pages in a zone

Re: [patch v2 1/3] mm: vmscan: fix numa reclaim balance problem in kswapd

2013-08-07 Thread Mel Gorman
On Fri, Aug 02, 2013 at 11:37:24AM -0400, Johannes Weiner wrote: When the page allocator fails to get a page from all zones in its given zonelist, it wakes up the per-node kswapds for all zones that are at their low watermark. However, with a system under load the free pages in a zone can

[patch v2 1/3] mm: vmscan: fix numa reclaim balance problem in kswapd

2013-08-02 Thread Johannes Weiner
When the page allocator fails to get a page from all zones in its given zonelist, it wakes up the per-node kswapds for all zones that are at their low watermark. However, with a system under load the free pages in a zone can fluctuate enough that the allocation fails but the kswapd wakeup is also

[patch v2 1/3] mm: vmscan: fix numa reclaim balance problem in kswapd

2013-08-02 Thread Johannes Weiner
When the page allocator fails to get a page from all zones in its given zonelist, it wakes up the per-node kswapds for all zones that are at their low watermark. However, with a system under load the free pages in a zone can fluctuate enough that the allocation fails but the kswapd wakeup is also