[Nut-upsuser] Upssched 100% CPU

[Dan Grostick]

Thanks for the tip.

I had downloaded a prerelease source version of NUT 2.8.1, built and installed it. Evidently there was an issue with upssched consuming 100% CPU.
 I downloaded the current release and the issue has been resolved. Updating all 3 systems.

Dan

________________________________
From: Nut-upsuser <nut-upsuser-bounces+danpower2023=outlook.com at alioth-lists.debian.net> on behalf of Andy Smith via Nut-upsuser <nut-upsuser at alioth-lists.debian.net>
Sent: Tuesday, March 5, 2024 6:43 AM
To: nut-upsuser at alioth-lists.debian.net <nut-upsuser at alioth-lists.debian.net>
Subject: Re: [Nut-upsuser] Upssched 100% CPU

Hi,

On Tue, Mar 05, 2024 at 08:37:32AM +0000, Dan Grostick via Nut-upsuser wrote:
> My Raspberry PI 3B was overheating - 70 degrees C.  I used Top and
> it turns out that upssched is taking 100% CPU.  Debian 11 (PI Os).
> I have two others running the same configuration, 2.8.1 with no
> problems.

I have no first hand knowledge of this issue, but in the change log
for the 2.8.1 release:

    https://networkupstools.org/historic/v2.8.1/docs/release-notes.chunked/NUT_Release_Notes.html#_release_notes_for_nut_2_8_1_what_8217_s_new_since_2_8_0

     A bug in upssched was discovered and fixed, where it ran a
     tight loop stressing the CPU; it was presumably introduced
     between NUT v2.7.4 and v2.8.0 releases [#1964, #1965]

I expect your Debian 11 Pi OS does not have 2.8.1, so maybe try that
version?

Thanks,
Andy

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