Part of macOS

`sysmond`System statistics

○ Leave it

Gathers the figures Activity Monitor shows.

What it is

Collects per-process statistics for Activity Monitor and similar tools.

Why it might be busy

While Activity Monitor is open. Usually while it stays open.

If you stop it

macOS starts it again straight away. Leave it.

○ Leave it. Part of macOS, or something that starts again by itself. You never need to close these.

From Procession’s guide, in the words the app shows.