linux-kernel - Re: weird loadavg on idle machine post 5.7

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Message-ID: <20200702194600.GA28941@codemonkey.org.uk>
Date:   Thu, 2 Jul 2020 15:46:00 -0400
From:   Dave Jones <davej@...emonkey.org.uk>
To:     Linux Kernel <linux-kernel@...r.kernel.org>, peterz@...radead.org,
        mgorman@...hsingularity.net, mingo@...nel.org,
        Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: weird loadavg on idle machine post 5.7

On Thu, Jul 02, 2020 at 01:15:48PM -0400, Dave Jones wrote:
 > When I upgraded my firewall to 5.7-rc2 I noticed that on a mostly
 > idle machine (that usually sees loadavg hover in the 0.xx range)
 > that it was consistently above 1.00 even when there was nothing running.
 > All that perf showed was the kernel was spending time in the idle loop
 > (and running perf).

Unfortunate typo there, I meant 5.8-rc2, and just confirmed the bug persists in
5.8-rc3.

	Dave