Zammad web UI slow / detailed documentation missing: How to troubleshoot?

[dvanzuijlekom]

I have explained some of our tuning and various setups in this post. It was for Zammad 5.2, but it still applies on 5.3.

Performance troubleshooting 5.2.1

Re-setting the WEB_CONCURRENCY and ZAMMAD_SESSION_JOBS_CONCURRENT to the values you’ve previously set would probably help you a lot already and might be the solution to most of the sluggishness. The values of 8 sounds reasonable to me based on your hardware specs and my own trial & error experiences (tune a setting, monitor performance, tune a setting, monitor performance… etc). For comparison, here are some stats about a few or our setups. Other than the concurrency settings, you might also wa…