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How to perform JavaScript CPU profiling

 

JavaScript CPU Profiling allows us to capture performance metrics from your browser which helps us troubleshoot performance problems.  Before starting Profiling, please go to the Jostle Login page. Start Profiling from the Login page and then perform your slow operations. This will help eliminate any unneeded Profiling data.

The following instructions outlines how to perform CPU Profiling within your browser and how to report the results to Jostle.

Chrome

To open the JavaScript Console within Chrome, press the CTRL + SHIFT + J keys together. Alternatively you can select More Tools > JavaScript Console from the menu. 

Once the JavaScript Console is opened, click into the Profiles tab and select Collect JavaScript CPU Profile option. Finally press the Start button to start Profiling.

 cpu01.png

 

Once you press the Start button, the Profiler will start capturing data regarding your browser operations. This is the time you have to perform your slow browser operations for the Profiler. Once you have finished your operations, press the Stop button.

Once you have stopped Profiling. Please save the results to file. You can do this by clicking the Save link. Please send us a copy of the saved results for our investigation.

 

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Firefox

To open the JavaScript Console within Firefox, press the CTRL + SHIFT + K keys together. Alternatively you can select Developer -> Web Console from the menu. 

Once the JavaScript Console is opened, click into the Performance tab and click 'Start Recording Performance' to start Profiling.

 cpu03.png

 

Once you press the Start button, the Profiler will start capturing data regarding your browser operations. This is the time you have to perform your slow browser operations for the Profiler. Once you have finished your operations, press the 'Stop Recording Performance' button to stop Profiling.

Once you have stopped Profiling. Please save the results to file. You can do this by clicking the Save link. Please send us a copy of the saved results for our investigation.

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Internet Explorer

To open the JavaScript Console within Internet Explorer, press the F12 key. Alternatively you can select F12 Developer Tools from the Tools menu

Once the JavaScript Console is opened, click into the Network tab and click the green arrow button to start Profiling.

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Once you press the green arrow button, the Profiler will start capturing data regarding your browser operations. This is the time you have to perform your slow browser operations for the Profiler. Once you have finished your operations, press the red square button to stop Profiling.

Once you have stopped Profiling. Please save the results to file. You can do this by clicking the Save disk icon. Please send us a copy of the saved results for our investigation.

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