Re: [RFC v2 PATCH 0/4] futex: Add support task local hash maps.

From: Sebastian Andrzej Siewior
Date: Thu Oct 31 2024 - 13:47:51 EST


On 2024-10-31 16:56:43 [+0100], To linux-kernel@xxxxxxxxxxxxxxx wrote:
> Pinning the bench to individual CPUs belonging to a NUMA node and
> running the same test with 110 threads only (avg over 5 runs):
> ops/sec global ops/sec local
> node 0 2278572.2 2534827.4
> node 1 2229838.6 2437498.8
> node 0+1 2542602.4 2535749.8

Running on node 1, with variable slot size:
hash slots ops/sec
2 43292.2
4 81829.2
8 156903.4
16 297063.6
32 554229.4
64 962158.4
128 1615859.6
256 2106941.4
512 2269494.8
1024 2328782.6
2048 2342981.6
4096 2337705.2
8192 2334141.4
16384 2334237.6
32768 2339262.2
65536 2438800.4

Sebastian