Python package to record activity from processes
psrecord is a small utility that uses the psutil library to record the CPU and memory activity of a process. The package is still under development and is therefore experimental.
The code is released under a Simplified BSD License, which is given in the LICENSE file.
To install, simply do:
pip install psrecord
To record the CPU and memory activity of an existing process to a file (use sudo for a root process):
psrecord 1330 --log activity.txt
where 1330 is an example of a process ID which you can find with ps or top. You can also use psrecord to start up a process by specifying the command in quotes:
psrecord "hyperion model.rtin model.rtout" --log activity.txt
To make a plot of the activity:
psrecord 1330 --plot plot.png
This will produce a plot such as:
You can combine these options to write the activity to a file and make a plot at the same time:
psrecord 1330 --log activity.txt --plot plot.png
Duration and intervals
By default, the monitoring will continue until the process is stopped. You can also specify a maximum duration in seconds:
psrecord 1330 --log activity.txt --duration 10
Finally, the process is polled as often as possible by default, but it is possible to set the time between samples in seconds:
psrecord 1330 --log activity.txt --interval 2
To include sub-processes in the CPU and memory stats, use:
psrecord 1330 --log activity.txt --include-children
To run tests, you will need pytest. You can install it with:
pip install pytest
You can then run the tests with:
Please report any issues in the issue tracker.
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