The extension lets you examine the resource usage of Firefox. It tracks the CPU load and memory usage of each used process. Hereby the currently used resources are displayed in a sidebar, on for each window.
Please note that the extension is still in early development. That means feedback for noticable issues, or missing features is wanted.
Because PerfChaser makes use of WebExtension Experiments it cannot be signed by addons.mozilla.org.
As such the following preferences have to be set via about:config
before installing the XPI:
xpinstall.signatures.required=falseextensions.experiments.enabled=true
Afterward the extension can be installed via about:addons by clicking the
gear icon, and selecting Install Add-on From File, or by dragging XPI onto
a browser window.
Note that only Firefox Nightly and Firefox Developer Edition support the installation of WebExtension Experiments.
In case you want to just test the extension without having it permanently
installed open about:debugging and select This Nightly or This Firefox
on the left side. From there you can select the manifest.rdf file via
Load Temporary Add-on....
Note that you also have to set extensions.experiments.enabled to true first,
but no changes to xpinstall.signatures.required are required. Now the extension
will kept installed until Firefox gets closed or restarted.
Everyone is welcome to contribute to the project. It doesn't matter if it's as a user of the extension and reporting issues, or when you want to even fix bugs and implement new features.
When modifying the code of the extension it is adviced to make use of the web-ext Node.js package. Running Firefox through it will make sure that changes to the code are automatically picked-up, and the extension reloaded in the current Firefox instance.
Use the following command to start Firefox Nightly with the extension running:
npm run start:firefox -- --firefox=nightly
There is also a npm script that builds the XPI file:
npm run build
Note: Due to the above restrictions signing the extension is not possible yet.