Re^3: Perl threads loss of performance with system call

[karlgoethebier]

I guess you are a little bit resistant to advice. «Beratungsresistent» as we say in German. Please provide more details. Else I abandon all hope. Best regards, Karl

[daniel85]

I do not understand what the importance of the "exact program" is, as other commands (such as echo) replicate the issue. But that said, this is the program: RNAfold from the ViennaRNA suite (https://www.tbi.univie.ac.at/RNA/).

[karlgoethebier]

Probably it matters. From ibidem:

«Perl Bindings...The RNA module to access RNAlib C-library functions from within Perl scripts»

I understand this like this: You don’t need to shell-out. You can do the stuff in pure Perl. If you fork or use threads is your design decision.

Update: See here

[daniel85]

I am sorry, but it is not like this. Not every single part of the framework is accessible from the Perl bindings. Ergo, the need to access it via shell-out.