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Used in below
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 data
replaymode to replay historical system data
livemode to view live system data
dumpsubcommand to report script-friendly information (eg JSON, CSV, OpenMetrics, etc.)
snapshotsubcommand to create a replayable snapshot file of historical system data
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.
below is packaged in Fedora as of Fedora 34, and can be installed with:
sudo dnf install below
Optionally, the systemd service for persistent data collection can also be enabled with:
sudo systemctl enable --now below
below is packaged in Alpine Linux - it's available in (upcoming) v3.17+ and
Edge. It can be installed with:
sudo apk add below
Optionally, the OpenRC service for persistent data collection can also be enabled with:
sudo rc-service below start
sudo rc-update add below
below is available in the
package and can be installed with
sudo emerge sys-process/below
Installing from source
First, install dependencies listed in building.md.
$ cargo install below
$ below --help
Live view of system:
$ sudo below live
Run recording daemon:
$ sudo cp ~/.cargo/bin/below /bin/below # if using cargo-install
$ sudo cp etc/below.service /etc/systemd/system
$ sudo systemctl daemon-reload
$ sudo systemctl start below
Replay historical data:
$ below replay -t "3m ago"
Integration with Prometheus/Grafana
below has basic support for Prometheus/Grafana through the
See https://github.com/danobi/below-grafana for more details.
Comparison with alternative tools
See comparison.md for a feature comparison with alternative tools.
See the CONTRIBUTING file for how to help out.
See LICENSE file.