[systemd-devel] stress test on systemd/dbus

[Simon McVittie]

On Fri, 13 Dec 2024 at 10:02:17 +0800, Yan, Haixiao (CN) wrote:
> I have a stress test on systemd/dbus, after 17h, dbus-daemon is sleeping and
> the context switching stops (voluntary_ctxt_switches stop increasing).

There was a bug in Yocto's dbus-daemon packaging until recently where
the dbus-daemon was (wrongly) compiled with test instrumentation, which
had unintended side effects that could match this symptom. Fixed in,
for example:
https://git.yoctoproject.org/poky/commit/meta/recipes-core/dbus?id=82ef31b2550f2f7398dd7d1161e16aaf8acc9371

This triggered some vaguely related issues:
https://gitlab.freedesktop.org/dbus/dbus/-/issues/535
https://gitlab.freedesktop.org/dbus/dbus/-/issues/536
which are both fixed in dbus 1.15.92 (a release candidate for 1.16.0):
https://lists.freedesktop.org/archives/dbus/2024-December/018495.html

Please check that your dbus-daemon is a version and configuration that
would not be affected by these.

None of this really has anything to do with systemd.

    smcv