# Julia 1.11 beta high latency

**URL:** <https://discourse.julialang.org/t/julia-1-11-beta-high-latency/112819>\
**Category:** Internals & Design\
**Created:** [April 11, 2024, 7:30am UTC](https://discourse.julialang.org/t/julia-1-11-beta-high-latency/112819 "2024-04-11T07:30:51Z")\
**Posts on this page:** 6\
**Page:** 2

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**Author:** ![kristoffer.carlsson](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/kristoffer.carlsson/32/22_2.png) [@kristoffer.carlsson](https://discourse.julialang.org/u/kristoffer.carlsson)\
**Post date:** [April 11, 2024, 3:21pm UTC](https://discourse.julialang.org/t/julia-1-11-beta-high-latency/112819/28 "2024-04-11T15:21:48Z")

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[lazily initialize the time zone cache by KristofferC · Pull Request #457 · JuliaTime/TimeZones.jl · GitHub](https://github.com/JuliaTime/TimeZones.jl/pull/457) seems to restore the load time of KiteUtils to 1.10 levels (a bit better actually). We’ll see if the maintainers like it.

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**Author:** ![mbauman](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/mbauman/32/31082_2.png) [@mbauman](https://discourse.julialang.org/u/mbauman)\
**Post date:** [April 11, 2024, 4:54pm UTC](https://discourse.julialang.org/t/julia-1-11-beta-high-latency/112819/29 "2024-04-11T16:54:03Z")

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A post was split to a new topic: [Versioning reproducibility with upgradeable stdlibs?](https://discourse.julialang.org/t/versioning-reproducibility-with-upgradeable-stdlibs/112839)

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**Author:** ![mbauman](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/mbauman/32/31082_2.png) [@mbauman](https://discourse.julialang.org/u/mbauman)\
**Post date:** [April 11, 2024, 5:02pm UTC](https://discourse.julialang.org/t/julia-1-11-beta-high-latency/112819/30 "2024-04-11T17:02:57Z")

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> [@lassepe](#):
>
> Training of some of my Flux models is also about 20% slower (irrespective of load times or compilation times). I guess this would also be related to the `Memory` change (?)
> 
> @mkitti can you share some info on which kind of changes package developers should consider to get back to 1.10 speed?

Before implementing changes, please do see if you can identify where the regression is coming from via profiling and post a separate topic or issue with a minimal example.

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**Author:** ![ufechner7](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/ufechner7/32/51363_2.png) [@ufechner7](https://discourse.julialang.org/u/ufechner7)\
**Post date:** [April 11, 2024, 6:26pm UTC](https://discourse.julialang.org/t/julia-1-11-beta-high-latency/112819/31 "2024-04-11T18:26:41Z")

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I just benchmarked my main function (which is non-allocating, using only StaticArrays), and there is no significant difference regarding the execution time:

```julia
# Julia 1.10 on Laptop on battery: 1047ns
# Julia 1.11 on Laptop on battery: 1035ns

```

I updated the title accordingly.

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**Author:** ![PeterSimon](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/petersimon/32/25193_2.png) [@PeterSimon](https://discourse.julialang.org/u/PeterSimon)\
**Post date:** [April 12, 2024, 3:18pm UTC](https://discourse.julialang.org/t/julia-1-11-beta-high-latency/112819/32 "2024-04-12T15:18:29Z")

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As another data point I will note that a typical case for PSSFSS.jl runs about 15% faster under Julia 1.11.0-beta1 than under 1.10.2. Of course, this pleases me greatly! Well, done, Julia developers!

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**Author:** ![mbauman](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/mbauman/32/31082_2.png) [@mbauman](https://discourse.julialang.org/u/mbauman)\
**Post date:** [September 17, 2024, 1:33pm UTC](https://discourse.julialang.org/t/julia-1-11-beta-high-latency/112819/33 "2024-09-17T13:33:24Z")

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2 posts were split to a new topic: [Latency with v1.11-rc3 REPL over SSH](https://discourse.julialang.org/t/latency-with-v1-11-rc3-repl-over-ssh/119498)

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