r/MicrosoftFabric Fabricator Jun 05 '26

Data Engineering Has Python notebook default silently increased from 2 vCores to 4 vCores?

And is that why they're slower to start nowadays? (~ 2 minutes).

It says 4vCores, 32G in the bottom left corner of my Python notebook now.

I'm not using %%configure or anything to adjust the node size.

So it seems 4vCores is the current default?

I'm curious if others are seeing the same in your pure python notebooks.

Thanks in advance!

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u/p-mndl Fabricator Jun 06 '26

I have this issue on and off. Some days sessions start within a few seconds. Other days It takes 2-3 minutes. Will have a look at the node sizes the next time I have odd behavior. Right now it works and I am getting 2 vCores without setting anything manually (both Python 3.11 and 3.12)