# Potential performance regressions in Julia 1.8 for special un-precompiled type dispatches and how to fix them

**URL:** <https://discourse.julialang.org/t/potential-performance-regressions-in-julia-1-8-for-special-un-precompiled-type-dispatches-and-how-to-fix-them/86359>\
**Category:** Performance\
**Tags:** performance\
**Created:** [August 25, 2022, 8:27pm UTC](https://discourse.julialang.org/t/potential-performance-regressions-in-julia-1-8-for-special-un-precompiled-type-dispatches-and-how-to-fix-them/86359 "2022-08-25T20:27:47Z")\
**Posts on this page:** 1\
**Showing post:** 11

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**Author:** ![jishnub](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/jishnub/32/33620_2.png) [@jishnub](https://discourse.julialang.org/u/jishnub)\
**Post date:** [August 26, 2022, 3:40pm UTC](https://discourse.julialang.org/t/potential-performance-regressions-in-julia-1-8-for-special-un-precompiled-type-dispatches-and-how-to-fix-them/86359/11 "2022-08-26T15:40:06Z")

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I think at a package level, one may assert that a PR doesn’t add invalidations. See e.g. [https://github.com/JuliaArrays/OffsetArrays.jl/blob/master/.github/workflows/invalidations.yml](https://github.com/JuliaArrays/OffsetArrays.jl/blob/master/.github/workflows/invalidations.yml)

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