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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)