I had a quick test of the beta today, and found it to be 20% to 70% slower than Julia 1.10. Is this to be expected?

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

It’s on the 1.11 milestone, so it will not be ignored. It has 16 regressions (41% of the 39 open issues on the milestone, though only 8 also marked performance). In total there are 39 regressions since not all are marked on the milestone. I wouldn’t worry too much about regressions, this is only a…

I have been trying to tell people about this for a while. Julia 1.11 is going to be slower than Julia 1.10 for a number of reasons. There are a lot of big changes landing in this release. Besides the Memory change, more packages have been kicked out of the system image. If you a performance sensiti…

[image] mkitti: I have been trying to tell people about this for a while. Julia 1.11 is going to be slower than Julia 1.10 for a number of reasons. OK, comprehensible, but than, sorry, why releasing 1.11 in that state?

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?

[image] joa-quim: OK, comprehensible, but than, sorry, why releasing 1.11 in that state? It’s not released yet, and work is underway to address regressions before the actual release. The beta versions are meant for users and package developers to point out issues with the upcoming release. It…

[image] mkitti: have been trying to tell people about this for a while. Julia 1.11 is going to be slower than Julia 1.10 You didn’t quote the full story. EDIT: Sorry for misunderstanding, this was a reply to the jishnub’s comment above.

Here’s a small part of it: [image] Should we distribute multiple official system images for Julia 1.11? Internals & Design In Julia 1.11, REPL.jl and Pkg.jl are now independent packages and not standard in the system image. This will help slim down the system image and mak…

Most of the load time regression seems to come from TimeZones: julia> @time using TimeZones 0.096659 seconds (402.11 k allocations: 18.721 MiB, 20.38% compilation time) julia> VERSION v"1.10.2" vs julia> @time using TimeZones 0.456108 seconds (3.32 M allocations: 165.423 MiB, 13.80% gc time,…

Maybe 1.11 is in a time zone that’s 0.4 seconds ahead?

Yes, this is precisely why betas are released and is the kind of feedback that’s needed to get to make releases better. If we knew that there weren’t problems/regressions, this would’ve been tagged as a release candidate. The beta simply means that there won’t be net-new features added anymore. Pl…

Julia 1.11 beta high latency

Internals & Design

mkitti April 11, 2024, 12:59pm 13

Here’s a small part of it:

Topic		Replies	Views
Julia 1.11 is slower than 1.10? Internals & Design regression	48	4219	October 29, 2024
Compile time slowdown from 1.1 to 1.2 Internals & Design	12	2199	November 27, 2019
Poor performance of SIMD vectorization in the latest version of Julia (v1.11.2) Performance performance	19	988	January 8, 2025
Startup time of 1000 packages – 53% slower in Julia 1.12 vs 1.10 Internals & Design performance , ttfx , latency	81	6320	November 14, 2025
Shouldn't 1.8.0 be faster than Julia 1.7? Performance	30	2739	September 16, 2022

Julia 1.11 beta high latency

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