Re: [PATCH 27/63] mm: numa: Scan pages with elevated page_mapcount

2013-10-07 Thread Rik van Riel
On 10/07/2013 06:29 AM, Mel Gorman wrote: > Currently automatic NUMA balancing is unable to distinguish between false > shared versus private pages except by ignoring pages with an elevated > page_mapcount entirely. This avoids shared pages bouncing between the > nodes whose task is using them but

[PATCH 27/63] mm: numa: Scan pages with elevated page_mapcount

2013-10-07 Thread Mel Gorman
Currently automatic NUMA balancing is unable to distinguish between false shared versus private pages except by ignoring pages with an elevated page_mapcount entirely. This avoids shared pages bouncing between the nodes whose task is using them but that is ignored quite a lot of data. This patch

[PATCH 27/63] mm: numa: Scan pages with elevated page_mapcount

2013-10-07 Thread Mel Gorman
Currently automatic NUMA balancing is unable to distinguish between false shared versus private pages except by ignoring pages with an elevated page_mapcount entirely. This avoids shared pages bouncing between the nodes whose task is using them but that is ignored quite a lot of data. This patch

Re: [PATCH 27/63] mm: numa: Scan pages with elevated page_mapcount

2013-10-07 Thread Rik van Riel
On 10/07/2013 06:29 AM, Mel Gorman wrote: Currently automatic NUMA balancing is unable to distinguish between false shared versus private pages except by ignoring pages with an elevated page_mapcount entirely. This avoids shared pages bouncing between the nodes whose task is using them but

[PATCH 27/63] mm: numa: Scan pages with elevated page_mapcount

2013-09-27 Thread Mel Gorman
Currently automatic NUMA balancing is unable to distinguish between false shared versus private pages except by ignoring pages with an elevated page_mapcount entirely. This avoids shared pages bouncing between the nodes whose task is using them but that is ignored quite a lot of data. This patch

[PATCH 27/63] mm: numa: Scan pages with elevated page_mapcount

2013-09-27 Thread Mel Gorman
Currently automatic NUMA balancing is unable to distinguish between false shared versus private pages except by ignoring pages with an elevated page_mapcount entirely. This avoids shared pages bouncing between the nodes whose task is using them but that is ignored quite a lot of data. This patch