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Re: [PATCH -mm -v3] mm, swap: Sort swap entries before free

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On Fri, 2017-04-07 at 14:49 +0800, Huang, Ying wrote:

> To solve the issue, the per-CPU buffer is sorted according to the
> swap
> device before freeing the swap entries.  Test shows that the time
> spent by swapcache_free_entries() could be reduced after the patch.
> 
> Test the patch via measuring the run time of
> swap_cache_free_entries()
> during the exit phase of the applications use much swap space.  The
> results shows that the average run time of swap_cache_free_entries()
> reduced about 20% after applying the patch.
> 
> Signed-off-by: Huang Ying <ying.huang@intel.com>
> Acked-by: Tim Chen <tim.c.chen@intel.com>
> Cc: Hugh Dickins <hughd@google.com>
> Cc: Shaohua Li <shli@kernel.org>
> Cc: Minchan Kim <minchan@kernel.org>
> Cc: Rik van Riel <riel@redhat.com>

Acked-by: Rik van Riel <riel@redhat.com>

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[PATCH -mm -v3] mm, swap: Sort swap entries before free "Huang, Ying" <ying.huang@intel.com> - 2017-04-07 08:50 +0200
  Re: [PATCH -mm -v3] mm, swap: Sort swap entries before free Rik van Riel <riel@redhat.com> - 2017-04-07 15:10 +0200
  Re: [PATCH -mm -v3] mm, swap: Sort swap entries before free Andrew Morton <akpm@linux-foundation.org> - 2017-04-07 23:50 +0200

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