From: Johannes Weiner <hannes@cmpxchg.org>
To: js1304@gmail.com
Cc: Andrew Morton <akpm@linux-foundation.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Michal Hocko <mhocko@kernel.org>, Hugh Dickins <hughd@google.com>,
Minchan Kim <minchan@kernel.org>,
Vlastimil Babka <vbabka@suse.cz>,
Mel Gorman <mgorman@techsingularity.net>,
kernel-team@lge.com, Joonsoo Kim <iamjoonsoo.kim@lge.com>
Subject: Re: [PATCH v3 1/9] mm/vmscan: make active/inactive ratio as 1:1 for anon lru
Date: Wed, 18 Mar 2020 13:45:39 -0400 [thread overview]
Message-ID: <20200318174539.GA154135@cmpxchg.org> (raw)
In-Reply-To: <1584423717-3440-2-git-send-email-iamjoonsoo.kim@lge.com>
On Tue, Mar 17, 2020 at 02:41:49PM +0900, js1304@gmail.com wrote:
> From: Joonsoo Kim <iamjoonsoo.kim@lge.com>
>
> Current implementation of LRU management for anonymous page has some
> problems. Most important one is that it doesn't protect the workingset,
> that is, pages on the active LRU list. Although, this problem will be
> fixed in the following patchset, the preparation is required and
> this patch does it.
>
> What following patchset does is to restore workingset protection. In this
> case, newly created or swap-in pages are started their lifetime on the
> inactive list. If inactive list is too small, there is not enough chance
> to be referenced and the page cannot become the workingset.
>
> In order to provide enough chance to the newly anonymous pages, this patch
> makes active/inactive LRU ratio as 1:1.
>
> Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
next prev parent reply other threads:[~2020-03-18 17:45 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-17 5:41 [PATCH v3 0/9] workingset protection/detection on the anonymous LRU list js1304
2020-03-17 5:41 ` [PATCH v3 1/9] mm/vmscan: make active/inactive ratio as 1:1 for anon lru js1304
2020-03-18 17:45 ` Johannes Weiner [this message]
2020-03-17 5:41 ` [PATCH v3 2/9] mm/vmscan: protect the workingset on anonymous LRU js1304
2020-03-18 17:51 ` Johannes Weiner
2020-03-19 4:01 ` Joonsoo Kim
2020-03-17 5:41 ` [PATCH v3 3/9] mm/workingset: extend the workingset detection for anon LRU js1304
2020-03-18 18:06 ` Johannes Weiner
2020-03-19 4:13 ` Joonsoo Kim
2020-03-17 5:41 ` [PATCH v3 4/9] mm/swapcache: support to handle the value in swapcache js1304
2020-03-18 18:33 ` Johannes Weiner
2020-03-19 6:01 ` Joonsoo Kim
2020-03-17 5:41 ` [PATCH v3 5/9] mm/workingset: use the node counter if memcg is the root memcg js1304
2020-03-18 19:18 ` Johannes Weiner
2020-03-19 6:20 ` Joonsoo Kim
2020-03-17 5:41 ` [PATCH v3 6/9] mm/workingset: handle the page without memcg js1304
2020-03-18 19:59 ` Johannes Weiner
2020-03-19 8:31 ` Joonsoo Kim
2020-03-17 5:41 ` [PATCH v3 7/9] mm/swap: implement workingset detection for anonymous LRU js1304
2020-03-17 5:41 ` [PATCH v3 8/9] mm/vmscan: restore active/inactive ratio " js1304
2020-03-17 5:41 ` [PATCH v3 9/9] mm/swap: count a new anonymous page as a reclaim_state's rotate js1304
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