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Date:   Mon, 18 Feb 2019 09:49:10 -0800
From:   Linus Torvalds <>
To:     Peter Zijlstra <>
Cc:     Ingo Molnar <>,
        Thomas Gleixner <>,
        Paul Turner <>,
        Tim Chen <>,
        Linux List Kernel Mailing <>,,
        Frédéric Weisbecker <>,
        Kees Cook <>,
Subject: Re: [RFC][PATCH 00/16] sched: Core scheduling

On Mon, Feb 18, 2019 at 9:40 AM Peter Zijlstra <> wrote:
> However; whichever way around you turn this cookie; it is expensive and nasty.

Do you (or anybody else) have numbers for real loads?

Because performance is all that matters. If performance is bad, then
it's pointless, since just turning off SMT is the answer.


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