diff options
| author | Kairui Song <[email protected]> | 2024-07-30 23:49:17 -0700 |
|---|---|---|
| committer | Andrew Morton <[email protected]> | 2024-09-03 21:15:25 -0700 |
| commit | 650975d2b181e30c9017c42cb3f6535287555b1e (patch) | |
| tree | 874ce1490b317804d772174f239b7c51b0f91c60 /tools/perf/scripts/python/bin/flamegraph-record | |
| parent | 3b2561b5daeb3531c011491e9a6d2b934cc8f49f (diff) | |
mm: swap: skip slot cache on freeing for mTHP
Currently when we are freeing mTHP folios from swap cache, we free then
one by one and put each entry into swap slot cache. Slot cache is
designed to reduce the overhead by batching the freeing, but mTHP swap
entries are already continuous so they can be batch freed without it
already, it saves litle overhead, or even increase overhead for larger
mTHP.
What's more, mTHP entries could stay in swap cache for a while.
Contiguous swap entry is an rather rare resource so releasing them
directly can help improve mTHP allocation success rate when under
pressure.
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Kairui Song <[email protected]>
Reported-by: Barry Song <[email protected]>
Acked-by: Barry Song <[email protected]>
Cc: Chris Li <[email protected]>
Cc: "Huang, Ying" <[email protected]>
Cc: Hugh Dickins <[email protected]>
Cc: Kalesh Singh <[email protected]>
Cc: Ryan Roberts <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/bin/flamegraph-record')
0 files changed, 0 insertions, 0 deletions