Re: kernel: perf: interrupt took too long

From	Toni Mas Soler <antomassol@protonmail.com>
Newsgroups	linux.debian.user
Subject	Re: kernel: perf: interrupt took too long
Date	2021-05-25 12:10 +0200
Message-ID	<CiCaB-4O1-3@gated-at.bofh.it> (permalink)
References	<Ci9UZ-48d-1@gated-at.bofh.it> <CiBod-4jW-1@gated-at.bofh.it>
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This is usual on my machine after reboot.
It could be an alert if after some time doing same work you see this message again.

https://bbs.archlinux.org/viewtopic.php?id=187636

Toni Mas
GPG 3F42A21D84D7E950

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‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
En dimarts 25 de maig de 2021 a les 11:17, john doe <johndoe65534@mail.com> va escriure:

> On 5/24/2021 5:55 AM, Richard Hector wrote:
> 

> > Hi all,
> > I see messages like this frequently for a day or two after rebooting a
> > particularly slow old machine (Atom-based HP thin client, running as an
> > OpenVPN endpoint):
> > May 23 05:36:37 ovpn kernel: [14268.392418] perf: interrupt took too
> > long (4020 > 3996), lowering kernel.perf_event_max_sample_rate to 4975
0
> > Would it be a good idea to set this value at boot time, rather than
> > waiting for it to auto-adjust down till it settles?
> > Actually I don't know if it's because the machine is slow; it's just the
> > only machine I see this on.
> 

> At the time I've looked at this, I came to the conclusion that a cure
> was worse than the illness.
> 

> ----------------------------------------------------------------------------------------------------
> 

> John Doe

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kernel: perf: interrupt took too long Richard Hector <richard@walnut.gen.nz> - 2021-05-24 06:00 +0200
  Re: kernel: perf: interrupt took too long The Wanderer <wanderer@fastmail.fm> - 2021-05-24 12:00 +0200
    Re: kernel: perf: interrupt took too long Richard Hector <richard@walnut.gen.nz> - 2021-05-27 07:40 +0200
  Re: kernel: perf: interrupt took too long john doe <johndoe65534@mail.com> - 2021-05-25 11:20 +0200
    Re: kernel: perf: interrupt took too long Toni Mas Soler <antomassol@protonmail.com> - 2021-05-25 12:10 +0200

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