# Taking TTFX seriously: Can we make common packages faster to load and use

**URL:** <https://discourse.julialang.org/t/taking-ttfx-seriously-can-we-make-common-packages-faster-to-load-and-use/74949>\
**Category:** Performance\
**Tags:** ttfp\
**Created:** [January 20, 2022, 5:16pm UTC](https://discourse.julialang.org/t/taking-ttfx-seriously-can-we-make-common-packages-faster-to-load-and-use/74949 "2022-01-20T17:16:03Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![ChrisRackauckas](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/chrisrackauckas/32/77_2.png) [@ChrisRackauckas](https://discourse.julialang.org/u/ChrisRackauckas)\
**Post date:** [January 21, 2022, 3:06am UTC](https://discourse.julialang.org/t/taking-ttfx-seriously-can-we-make-common-packages-faster-to-load-and-use/74949/5 "2022-01-21T03:06:00Z")

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> [@Raf](#):
>
> Its not always possible to actually call functions, but feel free to add a PR that calls `Blink.Window()` to improve compile time 😉

Definitely not all of the time, but using `precompile` should probably the exception rather than the rule. There are some pretty clear maintenance reasons to prefer never using `precompile` unless you have to.

> [@Raf](#):
>
> Its 80% of package load time in the example, so maybe not. And using Requires does exactly mean that the code behind the requires block is not precompiled. But thanks for the link.

Sure it can happen, but I dug through a ton of packages and just didn’t find it to be the case for most package load times. In fact, StaticArrays ended up contributing more to using time than Requires for pretty much any package I tried (which is what led to [When should a package move to the standard library or system image? StaticArrays, what is it?](https://discourse.julialang.org/t/when-should-a-package-move-to-the-standard-library-or-system-image-staticarrays-what-is-it/73577)). So there’s always exceptions, but I don’t think the exceptions should be highlighted as the norm.

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