linux-kernel - Re: [PATCH 0/8] sched: Fix hot-unplug regressions

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Message-ID: <20210116154859.GR2743@paulmck-ThinkPad-P72>
Date:   Sat, 16 Jan 2021 07:48:59 -0800
From:   "Paul E. McKenney" <paulmck@...nel.org>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     mingo@...nel.org, tglx@...utronix.de, linux-kernel@...r.kernel.org,
        jiangshanlai@...il.com, valentin.schneider@....com, cai@...hat.com,
        vincent.donnefort@....com, decui@...rosoft.com,
        vincent.guittot@...aro.org, rostedt@...dmis.org, tj@...nel.org
Subject: Re: [PATCH 0/8] sched: Fix hot-unplug regressions

On Sat, Jan 16, 2021 at 12:30:33PM +0100, Peter Zijlstra wrote:
> Hi,
> 
> These patches (no longer 4), seems to fix all the hotplug regressions as per
> nearly a 100 18*SRCU-P runs over-night.

Nice!!!

> I did clean up the patches, so possibly I wrecked it again. I've started new
> runs and will again leave them running over-night.
> 
> Paul, if you could please also throw your monster machine at it.

Will do as soon as the tests I started yesterday complete, which should
be this afternoon, Pacific Time.

My thought is to do the full set of scenarios overnight, then try
hammering either SRCU-P and/or whatever else shows up in the overnight
test.  Seem reasonable?

							Thanx, Paul