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Keys

• e / E, :Enforce-Task-Memory-Scale and :Enforce-Summary-Memory-Scale. Cycle through the available memory scaling which ranges from KiB through EiB.
• f, :Fields-Management. Display a separate screen to change which fields to display, ordering and the sort field.
• o, :Other-Filtering. With COMMAND=gcc you can filter for gcc processes.

Command-line options

• -u <user>, :User-filter-mode. Display only processes with a user id or user name matching that given.

Alternatives

You may want to also use systemd-cgtop to observe containers.