linux-kernel - Re: [RESEND PATCH v3 0/7] Improve scheduler scalability for fast path

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 for Android: free password hash cracker in your pocket

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

Message-ID: <20190701140434.GW3402@hirez.programming.kicks-ass.net>
Date:   Mon, 1 Jul 2019 16:04:34 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Patrick Bellasi <patrick.bellasi@....com>
Cc:     subhra mazumdar <subhra.mazumdar@...cle.com>,
        linux-kernel@...r.kernel.org, mingo@...hat.com, tglx@...utronix.de,
        steven.sistare@...cle.com, dhaval.giani@...cle.com,
        daniel.lezcano@...aro.org, vincent.guittot@...aro.org,
        viresh.kumar@...aro.org, tim.c.chen@...ux.intel.com,
        mgorman@...hsingularity.net, Paul Turner <pjt@...gle.com>,
        riel@...riel.com, morten.rasmussen@....com
Subject: Re: [RESEND PATCH v3 0/7] Improve scheduler scalability for fast path

On Mon, Jul 01, 2019 at 02:55:52PM +0100, Patrick Bellasi wrote:
> On 01-Jul 11:02, Peter Zijlstra wrote:

> > Some of the things we could tie to this would be:
> > 
> >   - select_idle_siblings; -nice would scan more than +nice,
> 
> Just to be sure, you are not proposing to use the nice value we
> already have, i.e.
>   p->{static,normal}_prio
> but instead a new similar concept, right?

Correct; a new sched_attr::sched_latency_nice value, which is like
sched_nice, but controls a different dimmension of behaviour.