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

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Message-ID: <20241031174736.apc_hFru@linutronix.de>
Date: Thu, 31 Oct 2024 18:47:36 +0100
From: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To: linux-kernel@...r.kernel.org
Cc: André Almeida <andrealmeid@...lia.com>,
	Darren Hart <dvhart@...radead.org>,
	Davidlohr Bueso <dave@...olabs.net>, Ingo Molnar <mingo@...hat.com>,
	Juri Lelli <juri.lelli@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Valentin Schneider <vschneid@...hat.com>,
	Waiman Long <longman@...hat.com>
Subject: Re: [RFC v2 PATCH 0/4] futex: Add support task local hash maps.

On 2024-10-31 16:56:43 [+0100], To linux-kernel@...r.kernel.org 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