linux-kernel - [PATCH net-next 0/2] mlx5: Use NUMA distance metrics

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20220717052301.19067-1-tariqt@nvidia.com>
Date:   Sun, 17 Jul 2022 08:22:59 +0300
From:   Tariq Toukan <tariqt@...dia.com>
To:     "David S. Miller" <davem@...emloft.net>,
        Saeed Mahameed <saeedm@...dia.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Juri Lelli <juri.lelli@...hat.com>
CC:     Eric Dumazet <edumazet@...gle.com>,
        Paolo Abeni <pabeni@...hat.com>, <netdev@...r.kernel.org>,
        Gal Pressman <gal@...dia.com>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        <linux-kernel@...r.kernel.org>, Tariq Toukan <tariqt@...dia.com>
Subject: [PATCH net-next 0/2] mlx5: Use NUMA distance metrics

Hi,

Expose the scheduler's sched_numa_find_closest() function, and use it in
mlx5 device driver.  This replaces the binary NUMA preference (local /
remote) with an improved one that minds the actual distances, so that
remote NUMAs with short distance are preferred over farther ones.

This has significant performance implications when using NUMA-aware
memory allocations, improving the throughput and CPU utilization.

Regards,
Tariq

Tariq Toukan (2):
  sched/topology: Expose sched_numa_find_closest
  net/mlx5e: Improve remote NUMA preferences used for the IRQ affinity
    hints

 drivers/net/ethernet/mellanox/mlx5/core/eq.c | 46 ++++++++++++++++++--
 include/linux/sched/topology.h               |  2 +
 kernel/sched/topology.c                      |  1 +
 3 files changed, 46 insertions(+), 3 deletions(-)

-- 
2.21.0