Slow Julia startup time after sysimage creation (and an unbelievable observation!)

Tooling
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2

imho: probably more modules ( 152 vs. 33 ) … more time ??

I don’t know

  • your julia environment ( 1.4? 1.5? )
    • the 1.5 is better
  • your number of Base.loaded_modules

so I tried to replicate your times … but your script is not worked for me …

So with your prefered packages - without package versions ( see my dockerfile ) …
I see 152 modules

root@88ce0d0df7d7:/# time julia -E "println(length(Base.loaded_modules));VERSION"
152
v"1.5.0-rc2.0"

real	0m3.464s
user	0m3.504s
sys	0m0.938s

the default 33 modules time tested on docker run -it --rm julia:1.5 bash

root@5bf6a36abe91:/# time julia -E "println(length(Base.loaded_modules));VERSION"
33
v"1.5.0-rc2.0"

real	0m0.528s
user	0m0.783s
sys	0m0.535s

the reference Julia 1.4 results is more ( ~4.363s ) … so the v1.5 version is better.

root@b2262a156039:/# time julia -E "println(length(Base.loaded_modules));VERSION"
152
v"1.4.2"

real	0m4.363s
user	0m4.346s
sys	0m0.936s

As I know the latency is high priority … you can find more info in this video

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