linux-kernel - [PATCH 0/2] Scale wakeup granularity relative to nr

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]

Date:   Mon, 20 Sep 2021 15:26:12 +0100
From:   Mel Gorman <mgorman@...hsingularity.net>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     Ingo Molnar <mingo@...nel.org>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Valentin Schneider <valentin.schneider@....com>,
        Aubrey Li <aubrey.li@...ux.intel.com>,
        Barry Song <song.bao.hua@...ilicon.com>,
        Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Mel Gorman <mgorman@...hsingularity.net>
Subject: [PATCH 0/2] Scale wakeup granularity relative to nr_running

It's unfortunate this is colliding with Plumbers but part of the
discussions are on select_idle_sibling and hackbench is a common
reference workload for evaluating select_idle_sibling. The
downside is that hackbench is sensitive to other factors much
more than the SIS cost. A major component is the value of
kernel.sched_wakeup_granularity_ns and this series tackles that
bit.

Patch 1 is minor, it was spotted while developing patch 2.

Patch 2 scales kernel.sched_wakeup_granularity_ns so allow
	tasks to avoid preemption longer when the machine
	is heavily overloaded.

-- 
2.31.1