# Precompilation No Effect ?!

**URL:** <https://discourse.julialang.org/t/precompilation-no-effect/74387>\
**Category:** Performance\
**Tags:** question, precompilation\
**Created:** [January 11, 2022, 12:05pm UTC](https://discourse.julialang.org/t/precompilation-no-effect/74387 "2022-01-11T12:05:05Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![yoh-meyers](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/yoh-meyers/32/14700_2.png) [@yoh-meyers](https://discourse.julialang.org/u/yoh-meyers)\
**Post date:** [January 11, 2022, 12:05pm UTC](https://discourse.julialang.org/t/precompilation-no-effect/74387/1 "2022-01-11T12:05:06Z")

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**Author:** ![yoh-meyers](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/yoh-meyers/32/14700_2.png) [@yoh-meyers](https://discourse.julialang.org/u/yoh-meyers)\
**Post date:** [January 11, 2022, 1:05pm UTC](https://discourse.julialang.org/t/precompilation-no-effect/74387/2 "2022-01-11T13:05:49Z")

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Also if I run my package tests with above mentioned 3 scenarios, using pre-compilation makes tests slightly slower. Really confused here …