From: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.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>,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
Daniel Jordan <daniel.m.jordan@oracle.com>
Subject: Re: [PATCH -mm -v4 00/21] mm, THP, swap: Swapout/swapin THP in one piece
Date: Wed, 4 Jul 2018 11:11:53 +0900 [thread overview]
Message-ID: <20180704021153.GA3346@jagdpanzerIV> (raw)
In-Reply-To: <20180627215144.73e98b01099191da59bff28c@linux-foundation.org>
On (06/27/18 21:51), Andrew Morton wrote:
> On Fri, 22 Jun 2018 11:51:30 +0800 "Huang, Ying" <ying.huang@intel.com> wrote:
>
> > This is the final step of THP (Transparent Huge Page) swap
> > optimization. After the first and second step, the splitting huge
> > page is delayed from almost the first step of swapout to after swapout
> > has been finished. In this step, we avoid splitting THP for swapout
> > and swapout/swapin the THP in one piece.
>
> It's a tremendously good performance improvement. It's also a
> tremendously large patchset :(
Will zswap gain a THP swap out/in support at some point?
mm/zswap.c: static int zswap_frontswap_store(...)
...
/* THP isn't supported */
if (PageTransHuge(page)) {
ret = -EINVAL;
goto reject;
}
-ss
next prev parent reply other threads:[~2018-07-04 2:11 UTC|newest]
Thread overview: 72+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-22 3:51 [PATCH -mm -v4 00/21] mm, THP, swap: Swapout/swapin THP in one piece Huang, Ying
2018-06-22 3:51 ` [PATCH -mm -v4 01/21] mm, THP, swap: Enable PMD swap operations for CONFIG_THP_SWAP Huang, Ying
2018-07-07 21:11 ` Dan Williams
2018-07-09 5:40 ` Huang, Ying
2018-07-09 6:08 ` Dan Williams
2018-07-09 6:34 ` Huang, Ying
2018-07-09 15:59 ` Dave Hansen
2018-07-10 1:08 ` Huang, Ying
2018-06-22 3:51 ` [PATCH -mm -v4 02/21] mm, THP, swap: Make CONFIG_THP_SWAP depends on CONFIG_SWAP Huang, Ying
2018-07-07 21:12 ` Dan Williams
2018-07-09 6:34 ` Huang, Ying
2018-07-09 16:00 ` Dave Hansen
2018-07-10 1:19 ` Huang, Ying
2018-07-10 1:59 ` Dave Hansen
2018-07-10 5:26 ` Huang, Ying
2018-06-22 3:51 ` [PATCH -mm -v4 03/21] mm, THP, swap: Support PMD swap mapping in swap_duplicate() Huang, Ying
2018-06-29 6:04 ` Matthew Wilcox
2018-07-02 5:19 ` Huang, Ying
2018-07-07 23:22 ` Dan Williams
2018-07-09 7:38 ` Huang, Ying
2018-07-09 16:51 ` Dave Hansen
2018-07-10 6:44 ` Huang, Ying
2018-07-10 13:50 ` Dave Hansen
2018-07-11 0:59 ` Huang, Ying
2018-06-22 3:51 ` [PATCH -mm -v4 04/21] mm, THP, swap: Support PMD swap mapping in swapcache_free_cluster() Huang, Ying
2018-07-09 17:11 ` Dave Hansen
2018-07-10 6:53 ` Huang, Ying
2018-07-10 13:54 ` Dave Hansen
2018-07-11 1:08 ` Huang, Ying
2018-06-22 3:51 ` [PATCH -mm -v4 05/21] mm, THP, swap: Support PMD swap mapping in free_swap_and_cache()/swap_free() Huang, Ying
2018-07-05 18:33 ` Daniel Jordan
2018-07-06 12:49 ` Huang, Ying
2018-07-09 17:19 ` Dave Hansen
2018-07-10 7:13 ` Huang, Ying
2018-07-10 14:07 ` Dave Hansen
2018-07-11 1:28 ` Huang, Ying
2018-06-22 3:51 ` [PATCH -mm -v4 06/21] mm, THP, swap: Support PMD swap mapping when splitting huge PMD Huang, Ying
2018-06-22 3:51 ` [PATCH -mm -v4 07/21] mm, THP, swap: Support PMD swap mapping in split_swap_cluster() Huang, Ying
2018-06-22 3:51 ` [PATCH -mm -v4 08/21] mm, THP, swap: Support to read a huge swap cluster for swapin a THP Huang, Ying
2018-06-29 6:21 ` Matthew Wilcox
2018-07-02 6:02 ` Huang, Ying
2018-07-04 0:12 ` Daniel Jordan
2018-07-04 2:24 ` Huang, Ying
2018-06-22 3:51 ` [PATCH -mm -v4 09/21] mm, THP, swap: Swapin a THP as a whole Huang, Ying
2018-06-22 3:51 ` [PATCH -mm -v4 10/21] mm, THP, swap: Support to count THP swapin and its fallback Huang, Ying
2018-06-22 3:51 ` [PATCH -mm -v4 11/21] mm, THP, swap: Add sysfs interface to configure THP swapin Huang, Ying
2018-06-22 3:51 ` [PATCH -mm -v4 12/21] mm, THP, swap: Support PMD swap mapping in swapoff Huang, Ying
2018-06-22 3:51 ` [PATCH -mm -v4 13/21] mm, THP, swap: Support PMD swap mapping in madvise_free() Huang, Ying
2018-06-22 3:51 ` [PATCH -mm -v4 14/21] mm, cgroup, THP, swap: Support to move swap account for PMD swap mapping Huang, Ying
2018-07-09 17:20 ` Daniel Jordan
2018-07-10 7:49 ` Huang, Ying
2018-07-10 22:49 ` Daniel Jordan
2018-06-22 3:51 ` [PATCH -mm -v4 15/21] mm, THP, swap: Support to copy PMD swap mapping when fork() Huang, Ying
2018-06-22 3:51 ` [PATCH -mm -v4 16/21] mm, THP, swap: Free PMD swap mapping when zap_huge_pmd() Huang, Ying
2018-06-22 3:51 ` [PATCH -mm -v4 17/21] mm, THP, swap: Support PMD swap mapping for MADV_WILLNEED Huang, Ying
2018-06-22 3:51 ` [PATCH -mm -v4 18/21] mm, THP, swap: Support PMD swap mapping in mincore() Huang, Ying
2018-06-22 3:51 ` [PATCH -mm -v4 19/21] mm, THP, swap: Support PMD swap mapping in common path Huang, Ying
2018-06-22 3:51 ` [PATCH -mm -v4 20/21] mm, THP, swap: create PMD swap mapping when unmap the THP Huang, Ying
2018-06-22 3:51 ` [PATCH -mm -v4 21/21] mm, THP: Avoid to split THP when reclaim MADV_FREE THP Huang, Ying
2018-06-28 4:51 ` [PATCH -mm -v4 00/21] mm, THP, swap: Swapout/swapin THP in one piece Andrew Morton
2018-06-28 5:29 ` Huang, Ying
2018-06-28 5:31 ` Andrew Morton
2018-06-28 5:35 ` Huang, Ying
2018-06-28 6:18 ` Andrew Morton
2018-06-28 9:03 ` Matthew Wilcox
2018-06-29 1:17 ` Huang, Ying
2018-06-29 5:57 ` Matthew Wilcox
2018-07-02 5:19 ` Huang, Ying
2018-07-04 2:11 ` Sergey Senozhatsky [this message]
2018-07-04 2:20 ` Huang, Ying
2018-07-04 2:27 ` Sergey Senozhatsky
2018-07-04 2:59 ` Huang, Ying
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