Automatic cell execution timing in jupyter lab

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Requirement

JupyterLab >= 2.0.2

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Let’s move step by step

Extension available for JupyterLab is

jupyterlab-execute-time

First enable Extension Manager

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After enabling you see new button in side task bar at the end “Extension Manager”

You can also enable it with the following steps:

  1. Go into advanced settings editor.
  2. Open the Extension Manager section.
  3. Add the entry “enabled”: true.
  4. Save the settings.
    If prompted whether you are sure, read the warning, and click “Enable” if you are still sure.
    Once enabled, you should see a new tab appear in the left sidebar
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By default, the disclaimer is not acknowledged.
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As the disclaimer is not acknowledged, you can search for an extension, but can not install it (no install button is available).
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To install an extension, you first have to explicitly acknowledge the disclaimer. Once done, this will remain across sessions and the user would not have to check it again.

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Finding Extension

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search jupyterlab-execute-time

Install
Enable

After enable you have to Rebuild it: A small popup window open on it click on Rebulid;

then you have to restart kernel

Still you find you will not able to see what you want :

Last thing

Note: for this to show anything, you need to enable cell timing in the notebook via Settings->Advanced Settings Editor->Notebook: {“recordTiming”: true}

Advanced Settings Editor

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finally “recordTiming”=true

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and save it at right end!

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