[PATCH 14/18] mm: numa: Limit scope of lock for NUMA migrate rate limiting

2013-12-10 Thread Mel Gorman
NUMA migrate rate limiting protects a migration counter and window using a lock but in some cases this can be a contended lock. It is not critical that the number of pages be perfect, lost updates are acceptable. Reduce the importance of this lock. Signed-off-by: Mel Gorman Reviewed-by: Rik van

[PATCH 14/18] mm: numa: Limit scope of lock for NUMA migrate rate limiting

2013-12-10 Thread Mel Gorman
NUMA migrate rate limiting protects a migration counter and window using a lock but in some cases this can be a contended lock. It is not critical that the number of pages be perfect, lost updates are acceptable. Reduce the importance of this lock. Signed-off-by: Mel Gorman mgor...@suse.de

Re: [PATCH 14/18] mm: numa: Limit scope of lock for NUMA migrate rate limiting

2013-12-09 Thread Rik van Riel
On 12/09/2013 02:09 AM, Mel Gorman wrote: > NUMA migrate rate limiting protects a migration counter and window using > a lock but in some cases this can be a contended lock. It is not > critical that the number of pages be perfect, lost updates are > acceptable. Reduce the importance of this lock.

Re: [PATCH 14/18] mm: numa: Limit scope of lock for NUMA migrate rate limiting

2013-12-09 Thread Rik van Riel
On 12/09/2013 02:09 AM, Mel Gorman wrote: NUMA migrate rate limiting protects a migration counter and window using a lock but in some cases this can be a contended lock. It is not critical that the number of pages be perfect, lost updates are acceptable. Reduce the importance of this lock.

[PATCH 14/18] mm: numa: Limit scope of lock for NUMA migrate rate limiting

2013-12-08 Thread Mel Gorman
NUMA migrate rate limiting protects a migration counter and window using a lock but in some cases this can be a contended lock. It is not critical that the number of pages be perfect, lost updates are acceptable. Reduce the importance of this lock. Signed-off-by: Mel Gorman ---

[PATCH 14/18] mm: numa: Limit scope of lock for NUMA migrate rate limiting

2013-12-08 Thread Mel Gorman
NUMA migrate rate limiting protects a migration counter and window using a lock but in some cases this can be a contended lock. It is not critical that the number of pages be perfect, lost updates are acceptable. Reduce the importance of this lock. Signed-off-by: Mel Gorman mgor...@suse.de ---