linux-kernel - [PATCH 0/2] zsmalloc: fine-grained fullness grouping

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Message-Id: <20230206092559.2722946-1-senozhatsky@chromium.org>
Date:   Mon,  6 Feb 2023 18:25:57 +0900
From:   Sergey Senozhatsky <senozhatsky@...omium.org>
To:     Minchan Kim <minchan@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>
Cc:     linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        Sergey Senozhatsky <senozhatsky@...omium.org>
Subject: [PATCH 0/2] zsmalloc: fine-grained fullness grouping

	Hi,

	zsmalloc has only two fullness group to choose pages from during
zs_malloc() and zs_compact():
- ALMOST_EMPTY for pages with usage ratio equal or less to 3/4 of total
  page capacity
- ALMOST_FULL for pages with usage raio greater than 3/4 of total page
  capacity

This leads to suboptimal page selection for both zs_malloc() and
zs_compact().

This patchset reworks zsmalloc fullness grouping/classification.

Sergey Senozhatsky (2):
  zsmalloc: remove insert_zspage() ->inuse optimization
  zsmalloc: fine-grained inuse ratio based fullness grouping

 mm/zsmalloc.c | 253 +++++++++++++++++++++++++++++++-------------------
 1 file changed, 156 insertions(+), 97 deletions(-)

-- 
2.39.1.519.gcb327c4b5f-goog