From: Rik van Riel <riel@redhat.com>
To: "Huang, Ying" <ying.huang@intel.com>,
Andrew Morton <akpm@linux-foundation.org>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Hugh Dickins <hughd@google.com>, Shaohua Li <shli@kernel.org>,
Minchan Kim <minchan@kernel.org>
Subject: Re: [PATCH -mm -v3] mm, swap: Sort swap entries before free
Date: Fri, 07 Apr 2017 09:05:29 -0400 [thread overview]
Message-ID: <1491570329.8850.163.camel@redhat.com> (raw)
In-Reply-To: <20170407064901.25398-1-ying.huang@intel.com>
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>
WARNING: multiple messages have this Message-ID (diff)
From: Rik van Riel <riel@redhat.com>
To: "Huang, Ying" <ying.huang@intel.com>,
Andrew Morton <akpm@linux-foundation.org>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Hugh Dickins <hughd@google.com>, Shaohua Li <shli@kernel.org>,
Minchan Kim <minchan@kernel.org>
Subject: Re: [PATCH -mm -v3] mm, swap: Sort swap entries before free
Date: Fri, 07 Apr 2017 09:05:29 -0400 [thread overview]
Message-ID: <1491570329.8850.163.camel@redhat.com> (raw)
In-Reply-To: <20170407064901.25398-1-ying.huang@intel.com>
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.A A 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.A A 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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next prev parent reply other threads:[~2017-04-07 13:05 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-07 6:49 [PATCH -mm -v3] mm, swap: Sort swap entries before free Huang, Ying
2017-04-07 6:49 ` Huang, Ying
2017-04-07 13:05 ` Rik van Riel [this message]
2017-04-07 13:05 ` Rik van Riel
2017-04-07 21:43 ` Andrew Morton
2017-04-07 21:43 ` Andrew Morton
2017-04-11 7:03 ` Huang, Ying
2017-04-11 7:03 ` Huang, Ying
2017-04-14 1:36 ` Huang, Ying
2017-04-14 1:36 ` Huang, Ying
2017-04-14 1:41 ` Huang, Ying
2017-04-18 4:59 ` Minchan Kim
2017-04-18 4:59 ` Minchan Kim
2017-04-19 8:14 ` Huang, Ying
2017-04-19 8:14 ` Huang, Ying
2017-04-20 6:38 ` Minchan Kim
2017-04-20 6:38 ` Minchan Kim
2017-04-20 7:15 ` Huang, Ying
2017-04-20 7:15 ` Huang, Ying
2017-04-21 12:29 ` Huang, Ying
2017-04-21 12:29 ` Huang, Ying
2017-04-21 23:29 ` Tim Chen
2017-04-21 23:29 ` Tim Chen
2017-04-23 13:16 ` Huang, Ying
2017-04-23 13:16 ` Huang, Ying
2017-04-24 16:03 ` Tim Chen
2017-04-24 16:03 ` Tim Chen
2017-04-24 4:52 ` Minchan Kim
2017-04-24 4:52 ` Minchan Kim
2017-04-24 6:47 ` Huang, Ying
2017-04-24 6:47 ` Huang, Ying
2017-04-26 12:42 ` Huang, Ying
2017-04-26 12:42 ` Huang, Ying
2017-04-26 20:13 ` Tim Chen
2017-04-26 20:13 ` Tim Chen
2017-04-27 1:21 ` Huang, Ying
2017-04-27 1:21 ` Huang, Ying
2017-04-27 16:48 ` Tim Chen
2017-04-27 16:48 ` Tim Chen
2017-04-27 4:35 ` Minchan Kim
2017-04-27 4:35 ` Minchan Kim
2017-04-28 1:09 ` Huang, Ying
2017-04-28 1:09 ` Huang, Ying
2017-04-28 7:42 ` Minchan Kim
2017-04-28 7:42 ` Minchan Kim
2017-04-28 8:05 ` Huang, Ying
2017-04-28 8:05 ` Huang, Ying
2017-04-28 9:00 ` Minchan Kim
2017-04-28 9:00 ` Minchan Kim
2017-04-28 11:48 ` Huang, Ying
2017-04-28 11:48 ` Huang, Ying
2017-04-28 13:35 ` Huang, Ying
2017-04-28 13:35 ` Huang, Ying
2017-05-02 5:02 ` Minchan Kim
2017-05-02 5:02 ` Minchan Kim
2017-05-02 5:35 ` Huang, Ying
2017-05-02 5:35 ` Huang, Ying
2017-05-02 5:48 ` Minchan Kim
2017-05-02 5:48 ` Minchan Kim
2017-05-02 6:08 ` Huang, Ying
2017-05-02 6:08 ` Huang, Ying
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