Performance & server commands

Find out why the dashboard feels slow while two films download, and restart the server cleanly.

Performance diagnosis

System Health → Performance measures for three seconds: CPU (programs, system, waiting for disk), pressure over 10 s, 1 min and 5 min, memory and swap, load per disk, network, ping to the router and to 1.1.1.1, CPU and disk per container, and the SABnzbd queue. The result names the bottleneck with tips.

zh perf          # one measurement
zh perf --live   # live view
zh perf --fix    # relieve SABnzbd

Measure under load

Run the diagnosis while downloads are running. Without load, CloudZH says so instead of guessing.

Relieve SABnzbd

Reduces the main server to 30 connections when it uses more than 50, turns off direct unpacking, pauses downloads during post-processing, lowers SABnzbd's CPU and disk priority and can set a speed limit at 90 % of your last speed test. SABnzbd restarts briefly.

Server commands

Operations → Server commands: restart or shut down now, in 5, 15, 30 or 60 minutes, or tonight at 04:00. CloudZH warns about running jobs. Shutting down asks you to type the server name.

zh reboot --in 30
zh reboot --status
zh reboot --cancel
zh poweroff --in 15

Maintenance by button: restart all running apps, restart dashboard and proxy, reset failed services, clean up Docker, shorten the journal, renew the certificate, sync the time.