Messages in this thread | | | Subject | Re: [PATCH -mm -v3] mm, swap: Sort swap entries before free | From | Rik van Riel <> | Date | Fri, 07 Apr 2017 09:05:29 -0400 |
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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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