below is an interactive tool to view and record historical system data. It
has support for:
- information regarding hardware resource utilization
- viewing the cgroup hierarchy
- cgroup and process information
- pressure stall information (PSI)
recordmode to record system datareplaymode to replay historical system datalivemode to view live system datadumpsubcommand to report script-friendly information (eg JSON and CSV)
below does not have support for cgroup1.
The name "below" stems from the fact that the below developers rejected many of atop's design and style decisions.
$ cargo install below
$ below --helpFor convenience, we also provide a Dockerfile and pre-built images on Docker Hub. See docker.md for how to use them.
Alternatively, see building.md for non-docker build instructions.
Live view of system:
$ sudo below liveRun recording daemon:
$ sudo cp ~/.cargo/bin/below /bin/below # if using cargo-install
$ sudo cp resctl/below/etc/below.service /etc/systemd/system
$ sudo systemctl daemon-reload
$ sudo systemctl start belowReplay historical data:
$ below replay -t "3m ago"See comparison.md for a feature comparison with alternative tools.
See the CONTRIBUTING file for how to help out.
See LICENSE file.