Procpath can also visualise RSS of the target process into an SVG out of the box like this: $ procpath plot -d tgt.sqlite -f tgt.svg -q rss -p $PID Using a SQLite GUI can be a more convenient to explore and query the database (e.g. $ sqlite3 tgt.sqlite "SELECT ts, stat_rss * 4 rss_kib FROM record WHERE stat_pid = $PID" When you think it has recorded enough datapoints, Ctrl+C it and this will give you the recordings. By default it makes a recording per 10 seconds (for the target process, its ancestors and descendants).
In the simplest case you point it to the PID of interest and let it record its Procfs metrics including Resident Set Size (RSS). Yes, can achieve exactly this, a bit more with Procpath (author here). I want to monitor memory usage of a process, and I want this data to be logged.
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