Improvements for @perfile

[Konrad_Klar]

Parameter MULTIPLE=
Default "0" would mean a number of logical CPUs.
This would cause to run simultaneously a given number of instances of affected function and start next instance only when one of previous is completed.

Fractional value like 0.5 would run a number of instances equal to a (number of logical CPUs * value). For value 0.5 and 4 logical CPUs 2 instances, for value 0.5 and 8 logical CPUs 4 instances.
That would make a sense if affected function uses 2 worker treads. And it would not need adjusting to specific computer.

This could solve problem described in that post:

Running a given number of functions at once

@async ebook-convert.exe {filepath$} {filepath$|ext=mobi} ebook-convert.exe from Calibre package converts between any supported document types, in above case to .mobi. I use it in context menu of .rtf files as ConvertToMOBI. So I have a 100 .rtf …

[PassThePeas]

You might take a look at the thread referenced below. It shows a way to launch commands in a controlled number of threads.

How to run a script command in parallel (multi-threading)

@Leo gave me a tip here while I was asking in passing by how I could run a script command once for each selected file individually instead of once for all files. This is no problem if you execute an external command and use @async, which doesn't work…