Slow/delays in REPL upon start

[albinahlback]

Did not experience this in Julia 1.10.X, but now with 1.11.0-beta1, I get delays/stuttering/slowness when opening the Pkg-mode in the Julia REPL.

This sort of sequence demonstrates when I get delays:

$ julia

julia>                      # Opening Julia is quite slow, but no change here
julia> writing_some_stuff   # No delay with autocompletion or anything

(@v1.11) pkg>               # **Very** slow to open Pkg REPL-mode
(@v1.11) pkg> dev           # Starting to write "dev PACKAGE", delay after writing 'd'
(@v1.11) pkg> dev PACKAGE   # Initial delay after writing 'P', maybe 'A' as well

(@v1.11) pkg> help          # Very slow to complete this command

(@v1.11) pkg> dev PACKAGE   # The second time it is fast again
(@v1.11) pkg> help          # The second time it is fast again

Here is my versioninfo():

Julia Version 1.11.0-beta1
Commit 08e1fc0abb9 (2024-04-10 08:40 UTC)
Build Info:
  Official https://julialang.org/ release
Platform Info:
  OS: Linux (x86_64-linux-gnu)
  CPU: 4 × Intel(R) Core(TM) i5-6300U CPU @ 2.40GHz
  WORD_SIZE: 64
  LLVM: libLLVM-16.0.6 (ORCJIT, skylake)
Threads: 1 default, 0 interactive, 1 GC (on 4 virtual cores)
Environment:
  LD_INCLUDE_PATH = :/home/albin/cbuilds/include:/home/albin/cbuilds/include:/home/albin/cbuilds/include
  LD_LIBRARY_PATH = :/home/albin/cbuilds/lib:/home/albin/cbuilds/lib:/home/albin/cbuilds/lib

[Keno]

(@v1.11) pkg> # Very slow to open Pkg REPL-mode

How slow is *VERY*? Pkg was changed to be lazy-loaded, so some delay is expected. On my machine about 400-500ms.

julia> # Opening Julia is quite slow, but no change here

Again, depending on what slow, means here, that's potentially also not expected. Is there possibly something wrong with your filesystem?

[albinahlback]

(@v1.11) pkg> # Very slow to open Pkg REPL-mode

How slow is *VERY*? Pkg was changed to be lazy-loaded, so some delay is expected. On my machine about 400-500ms.

Not sure, don't know how to benchmark such a thing. For me, 400-500 ms seems like quite a long time.

julia> # Opening Julia is quite slow, but no change here

Again, depending on what slow, means here, that's potentially also not expected.

Around 500 ms I believe.

Is there possibly something wrong with your filesystem?

I don't believe so, it's only like a one-two month old Arch installation. I mean, isn't Julia a quite heavy application to load? Very slow compared to Python at least, just something to compare with.

[Keno]

Ok, doesn't sound like anything's too terribly off then, and this'll just improve with ordinary load-time improvements.