[Solved] Haproxy and Plone docker images 5.2.8 and 5.2.9: CPU 100%

[sauzher (alessandro)]

Reading here

[Workaround] ZEO client with 100%+ CPU usage on Plone 6 Classic-UI

My Projekt runs on Ubuntu 20.04 and Python 3.10.9 with Plone 6.0-latest (Classic-UI) - nginx/varnish/haproxy with 4 zeoclients - default wsgi threads 4. After some content modifications the zeoclient(s) starts to have a CPU usage > 100% I dumped the threads of such a zeoclients with py-spy and got this: [py-spy] Any ideas whats going on here?

found that setting http-fast-listen = off in the buildout [instance] section, seems to solve the issue.