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Date:      Sat, 14 Oct 2023 16:38:04 +0100
From:      Graham Perrin <grahamperrin@gmail.com>
To:        Mateusz Guzik <mjguzik@gmail.com>
Cc:        FreeBSD CURRENT <freebsd-current@freebsd.org>
Subject:   Re: kernel 100% CPU
Message-ID:  <84712139-f7d8-41b5-a122-7ab1b24ffd61@gmail.com>
In-Reply-To: <CAGudoHHcEgnZMbyGPZgaOum7wVr8wvhHDE%2B7nXVqVttpgAh_rg@mail.gmail.com>
References:  <95e9f65b-58c4-ef3a-a5d1-b794179e4252@gmail.com> <CAGudoHG%2B4wT-MCP=zE4VqdJYJwTKSLf8GfARvQbGwKZw%2Bz8F_g@mail.gmail.com> <d2e5951a-7c6c-f450-eacc-d8e4f6446118@gmail.com> <CAGudoHEhNG2e2J7Cb2w0EKZ7p_cdq0hie_s67AHCj7x8hfw8SA@mail.gmail.com> <23c596e7-d710-c17d-a4e7-b21c99a4fe00@gmail.com> <CAGudoHFZUXcmM6DdnkWHAsxfjF5DVnjE5YT5mPA%2Bjjs12-JGzg@mail.gmail.com> <5528e510-2d79-ebc9-b3f4-79d5fb80f38f@gmail.com> <CAGudoHHcEgnZMbyGPZgaOum7wVr8wvhHDE%2B7nXVqVttpgAh_rg@mail.gmail.com>

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On 03/09/2023 20:25, Mateusz Guzik wrote:

> …
>
> Sorry mate, neglected to specify: collect sysctl -a once you run into 
> the problem.
>
> Once I look at that I'm probably going to ship some debug patches to 
> narrow it down. 


I had what might be the same issue this afternoon, for the first time in 
weeks. With the slowdown, it took a few minutes for me to find your 
email, unfortunately the symptoms subsided moments before finding it.

So, I collected the information, but it's probably another missed 
opportunity (the information collected too late).

The busy period lasted for around six minutes:

root@mowa219-gjp4-8570p-freebsd:~ # poudriere bulk -j main -J 3 -Ctv 
devel/pkgconf
[00:00:00] Creating the reference jail... done
[00:00:01] Mounting system devices for main-default
[00:00:02] Warning: Using packages from previously failed, or 
uncommitted, build: 
/usr/local/poudriere/data/packages/main-default/.building
[00:00:02] Mounting ccache from: /usr/.ccache
[00:00:02] Mounting ports from: /usr/local/poudriere/ports/default
[00:00:02] Mounting packages from: 
/usr/local/poudriere/data/packages/main-default
[00:00:02] Mounting distfiles from: /usr/ports/distfiles
[00:00:02] Copying /var/db/ports from: 
/usr/local/etc/poudriere.d/main-options
[00:00:02] Appending to make.conf: /usr/local/etc/poudriere.d/make.conf
/etc/resolv.conf -> 
/usr/local/poudriere/data/.m/main-default/ref/etc/resolv.conf
[00:00:02] Starting jail main-default
[00:00:02] Will build as nobody:nobody (65534:65534)
[00:00:05] Logs: 
/usr/local/poudriere/data/logs/bulk/main-default/2023-10-14_16h16m30s
[00:00:05] Loading MOVED for 
/usr/local/poudriere/data/.m/main-default/ref/usr/ports
[00:00:06] Ports supports: FLAVORS SELECTED_OPTIONS
[00:00:06] Inspecting ports tree for modifications to git checkout... yes
[00:06:39] Ports top-level git hash: e843b8293c (dirty)
…



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