why "require 'prawn'" adds two threads?

[matko...@gmail.com]

During profiling with ruby-prof I discovered that just adding "require 'prawn'" to ruby script spawns two additional threads. Why? How one may get rid of them?

minimum reproducible script: file with 'require 'prawn''.

[Alexander Mankuta]

Prawn doesn't use threads directly. The closest it comes to using threads is using a Mutex. Maybe that uses threads internally.

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Regards,

Alex