Comparison with alternative tools

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Atop

https://www.atoptool.nl/

Terminal interface
- Supports sorting, scrolling
In-depth host-level stats
Built in support for persisting/replaying historical data
atopsar for scriptable access to historical data

Drawbacks

No cgroup awareness
May suffer priority inversions while host is under resource contention
On-disk data has custom delta compression and may be corrupted easily

cAdvisor

https://github.com/google/cadvisor

Web interface
REST API for access to current data
Tight integration with containers and container runtimes (eg docker)
Reports high level stats on containers
Plugin architecture for persisting historical data

Drawbacks

Requires external storage service to persist historical data
cgroup1 only
Limited support for host level stats
No built in terminal interface

htop

https://htop.dev/

Wonderful terminal interface
- Supports searching, filtering, sorting, scrolling
Process tree view
Supports system actions (killing processes, straceing processes)

Drawbacks

No support for persisting/replaying historical data
No cgroup awareness
Limited host-level stats

below

https://github.com/facebookincubator/below

Terminal interface
- Supports filtering, zooming, pausing, sorting, scrolling
Built in support for persisting/replaying historical data
In-depth host-level stats
cgroup awareness with cgroup tree view
below dump for scriptable access to historical data
Goes to great lengths to avoid priority inversions during host resource contention

Drawbacks

cgroup2 only
No built in data compression (recommends btrfs transparent compression)