linux-kernel - Re: [PATCH 1/5] sched/pci: Reduce psimon FIFO priority

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

Date:   Thu, 1 Aug 2019 13:49:07 -0400
From:   Johannes Weiner <hannes@...xchg.org>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     mingo@...nel.org, linux-kernel@...r.kernel.org,
        Suren Baghdasaryan <surenb@...gle.com>,
        Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH 1/5] sched/pci: Reduce psimon FIFO priority

On Thu, Aug 01, 2019 at 01:13:49PM +0200, Peter Zijlstra wrote:
> PSI defaults to a FIFO-99 thread, reduce this to FIFO-1.
> 
> FIFO-99 is the very highest priority available to SCHED_FIFO and
> it not a suitable default; it would indicate the psi work is the
> most important work on the machine.
> 
> Since Real-Time tasks will have pre-allocated memory and locked it in
> place, Real-Time tasks do not care about PSI. All it needs is to be
> above OTHER.
> 
> Cc: Suren Baghdasaryan <surenb@...gle.com>
> Cc: Johannes Weiner <hannes@...xchg.org>
> Cc: Thomas Gleixner <tglx@...utronix.de>
> Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>

Acked-by: Johannes Weiner <hannes@...xchg.org>

Subject should be s/pci/psi/