linux-kernel - Re: [RFC PATCH v3 00/16] Core scheduling v3

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Message-ID: <20190930152240.GA13385@sinkpad>
Date:   Mon, 30 Sep 2019 11:22:40 -0400
From:   Julien Desfossez <jdesfossez@...italocean.com>
To:     Tim Chen <tim.c.chen@...ux.intel.com>
Cc:     Dario Faggioli <dfaggioli@...e.com>,
        "Li, Aubrey" <aubrey.li@...ux.intel.com>,
        Aaron Lu <aaron.lu@...ux.alibaba.com>,
        Aubrey Li <aubrey.intel@...il.com>,
        Subhra Mazumdar <subhra.mazumdar@...cle.com>,
        Vineeth Remanan Pillai <vpillai@...italocean.com>,
        Nishanth Aravamudan <naravamudan@...italocean.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Paul Turner <pjt@...gle.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Linux List Kernel Mailing <linux-kernel@...r.kernel.org>,
        Frédéric Weisbecker <fweisbec@...il.com>,
        Kees Cook <keescook@...omium.org>,
        Greg Kerr <kerrnel@...gle.com>, Phil Auld <pauld@...hat.com>,
        Valentin Schneider <valentin.schneider@....com>,
        Mel Gorman <mgorman@...hsingularity.net>,
        Pawan Gupta <pawan.kumar.gupta@...ux.intel.com>,
        Paolo Bonzini <pbonzini@...hat.com>
Subject: Re: [RFC PATCH v3 00/16] Core scheduling v3

> I've made an attempt in the following two patches to address
> the load balancing of mismatched load between the siblings.
> 
> It is applied on top of Aaron's patches:
> - sched: Fix incorrect rq tagged as forced idle
> - wrapper for cfs_rq->min_vruntime
>   https://lore.kernel.org/lkml/20190725143127.GB992@aaronlu/
> - core vruntime comparison
>   https://lore.kernel.org/lkml/20190725143248.GC992@aaronlu/
> 
> I will love Julien, Aaron and others to try it out.  Suggestions
> to tune it is welcomed.

Just letting you know that I will be testing your load balancing patches
this week along with the changes Vineeth is currently doing. I didn't
test it before because I was focused on single threaded and pinned
micro-benchmarks, but I am back on scaling tests so it will be
interesting to see.

Thanks,

Julien