| From: |
| Sergey Senozhatsky <senozhatsky-AT-chromium.org> |
| To: |
| Minchan Kim <minchan-AT-kernel.org>, Andrew Morton <akpm-AT-linux-foundation.org> |
| Subject: |
| [PATCHv3 0/4] zsmalloc: fine-grained fullness and new compaction algorithm |
| Date: |
| Fri, 03 Mar 2023 16:31:26 +0900 |
| Message-ID: |
| <20230303073130.1950714-1-senozhatsky@chromium.org> |
| Cc: |
| Yosry Ahmed <yosryahmed-AT-google.com>, linux-kernel-AT-vger.kernel.org, linux-mm-AT-kvack.org, Sergey Senozhatsky <senozhatsky-AT-chromium.org> |
| Archive-link: |
| Article |
Hi,
Existing zsmalloc page fullness grouping leads to suboptimal page
selection for both zs_malloc() and zs_compact(). This patchset
reworks zsmalloc fullness grouping/classification.
Additinally it also implements new compaction algorithm that is
expected to use less CPU-cycles (as it potentially does fewer
memcpy-s in zs_object_copy()).
Test (synthetic) results can be seen in patch 0003.
v3:
-- reworked compaction algorithm implementation (Minchan)
-- keep existing stats and fullness enums (Minchan, Yosry)
-- dropped the patch with new zsmalloc compaction stats (Minchan)
-- report per inuse ratio group classes stats
Sergey Senozhatsky (4):
zsmalloc: remove insert_zspage() ->inuse optimization
zsmalloc: fine-grained inuse ratio based fullness grouping
zsmalloc: rework compaction algorithm
zsmalloc: show per fullness group class stats
mm/zsmalloc.c | 362 ++++++++++++++++++++++++--------------------------
1 file changed, 175 insertions(+), 187 deletions(-)
--
2.40.0.rc0.216.gc4246ad0f0-goog
