mosquitto snap produces high CPU load

[Frank]

Running the MQTT broker mosquitto as snap produced a CPU load of 10-30%. Moving it to a docker container with the same settings reduced the load to 1-2%.

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: snap (not installed)
ProcVersionSignature: Ubuntu 5.15.0-27.28-generic 5.15.30
Uname: Linux 5.15.0-27-generic x86_64
ApportVersion: 2.20.11-0ubuntu82
Architecture: amd64
CasperMD5CheckResult: pass
Date: Tue May 10 18:00:04 2022
InstallationDate: Installed on 2021-10-22 (199 days ago)
InstallationMedia: Ubuntu-Server 21.10 "Impish Indri" - Release amd64 (20211013)
ProcEnviron:
 SHELL=/bin/bash
 LANG=C.UTF-8
 TERM=xterm
 XDG_RUNTIME_DIR=<set>
 PATH=(custom, no user)
SourcePackage: snap
UpgradeStatus: Upgraded to jammy on 2022-04-22 (18 days ago)

[Maciej Borzecki (maciek-borzecki)]

Are there any denials being logged? Anything in dmesg?

Did you move the extracted snap binaries to a container?

[Frank (ibinti)]

I did "snap remove mosquitto" and installed a fresh docker image. There are no logs I know of.
Even /var/snap/mosquitto/ vanished without explicit deleting it.

[Launchpad Janitor (janitor)]

[Expired for snapd (Ubuntu) because there has been no activity for 60 days.]