# Everything precompiling when opening new notebook

**URL:** <https://discourse.julialang.org/t/everything-precompiling-when-opening-new-notebook/84581>\
**Category:** Performance\
**Tags:** question\
**Created:** [July 21, 2022, 8:24am UTC](https://discourse.julialang.org/t/everything-precompiling-when-opening-new-notebook/84581 "2022-07-21T08:24:04Z")\
**Posts on this page:** 1\
**Showing post:** 8

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**Author:** ![Andy2K11](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/andy2k11/32/9967_2.png) [@Andy2K11](https://discourse.julialang.org/u/Andy2K11)\
**Post date:** [July 21, 2022, 12:02pm UTC](https://discourse.julialang.org/t/everything-precompiling-when-opening-new-notebook/84581/8 "2022-07-21T12:02:55Z")

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Funnily enough, while following your advice to use a temp environment I found another thread which discusses many of the same issues.

> [@How do I remove all my installed packages at once, if possible?](https://discourse.julialang.org/t/how-do-i-remove-all-my-installed-packages-at-once-if-possible/66820):
>
> When I first started Julia I installed a Lot of packages to try. Now I have two pagefulls with conflicts and it’s hard to figure out which pkg is the cause. I’d like to just delete the lot and reinstall the few I’ve found useful for now. Is there a way to do that?

Whatever went wrong specifically yesterday in the workshop, it does seem that I’m generally not using Julia the best way.

Thanks again for all your help, I shall try out these suggestions, this definitely feels like the “secret” I was missing when I couldn’t understand why I was running into these issues. In hindsight I probably should have posted to the newbies thread.

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