Messages in this thread | | | From | Xunlei Pang <> | Subject | [PATCH v2 0/3] mm/slub: Fix count_partial() problem | Date | Mon, 10 Aug 2020 20:17:49 +0800 |
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v1->v2: - Improved changelog and variable naming for PATCH 1~2. - PATCH3 adds per-cpu counter to avoid performance regression in concurrent __slab_free().
[Testing] On my 32-cpu 2-socket physical machine: Intel(R) Xeon(R) CPU E5-2650 v2 @ 2.60GHz perf stat --null --repeat 10 -- hackbench 20 thread 20000
== original, no patched 19.211637055 seconds time elapsed ( +- 0.57% )
== patched with patch1~2 Performance counter stats for 'hackbench 20 thread 20000' (10 runs):
21.731833146 seconds time elapsed ( +- 0.17% )
== patched with patch1~3 Performance counter stats for 'hackbench 20 thread 20000' (10 runs):
19.112106847 seconds time elapsed ( +- 0.64% )
Xunlei Pang (3): mm/slub: Introduce two counters for partial objects mm/slub: Get rid of count_partial() mm/slub: Use percpu partial free counter
mm/slab.h | 2 + mm/slub.c | 124 +++++++++++++++++++++++++++++++++++++++++++------------------- 2 files changed, 89 insertions(+), 37 deletions(-)
-- 1.8.3.1
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