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Locating resource hogs
Table of contents
CPU/memory
systemd-cgtop provides a top-like interface for all control groups. Processes spawned within the context of a site are governed by resource limits assigned in cgroup service class.
| Hotkey | Sort field |
|---|---|
| m | Memory |
| c | CPU |
| t | Tasks (PID count) |
Per process
Run top. Behaves similarly to systemd-cgtop.
| Hotkey | Sort field |
|---|---|
| shift + M | Memory |
| shift + P | CPU |
| shift + T | Cumulative time |
Bandwidth
admin:get-usage('bandwidth') returns bandwidth for all sites in their respective usage periods. jq can be used to sort output.
bash
# Sort bandwidth by sum of in + outcpcmd -o json admin:get-usage bandwidth | jq 'to_entries | sort_by(.value.sum)'
Storage
repquota -g $(findmnt -no SOURCE --target /home/virtual) | sort -n --key=3
If on a single mount, $(...) can be replaced with / or to report quotas for all mounts, -a.
admin:get-usage('storage') works similarly as the bandwidth example above.
bash
# Sort bandwidth by sum of in + outcpcmd -o json admin:get-usage storage | jq 'to_entries | sort_by(.value.qused)'
qused is storage blocks used in 4 KB units. fused is inode usage.
