linux-kernel - Re: Abysmal scheduler performance in Linus' tree?

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Message-ID: <20170906090333.7v627vdyvhe3x2cs@hirez.programming.kicks-ass.net>
Date:   Wed, 6 Sep 2017 11:03:33 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Andy Lutomirski <luto@...capital.net>
Cc:     Andy Lutomirski <luto@...nel.org>, Ingo Molnar <mingo@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: Abysmal scheduler performance in Linus' tree?

On Wed, Sep 06, 2017 at 01:59:14AM -0700, Andy Lutomirski wrote:
> > Any specifics on your setup?
> 
> On further fiddling, I only see this after a suspend and resume cycle.

Ah, ok. That's not something I otherwise test. Lets see if I can force
this brick of mine through a suspend-resume cycle :-)