Is the operation scheduling a task blocking?

General Usage
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2

The documentation is slightly outdated. If you look at

@macroexpand Threads.@spawn busy(v)

you’ll see that @spawn also sets the threadpool.
Before you schedule the t task, you may look at its threadpool:

julia> Threads.threadpool(t)
:interactive

So it runs on the same threadpool as your REPL, with a single thread. And it never yields.

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