From @hoelzro

As far as I can tell, MoarVM doesn't pass any information about a child process' PID to the caller of async proc operations; if it does, that information isn't exposed at the Perl 6 level. Having the PID handy is useful on Linux for things like inspecting a child's /proc entries.

From @AlexDaniel

Closing this in favor of rakudo/rakudo#1638

On 2015-10-17 06​:27​:53, rob@​hoelz.ro wrote​:

As far as I can tell, MoarVM doesn't pass any information about a
child process' PID to the caller of async proc operations; if it does,
that information isn't exposed at the Perl 6 level. Having the PID
handy is useful on Linux for things like inspecting a child's /proc
entries.

The RT System itself - Status changed from 'new' to 'open'

@AlexDaniel - Status changed from 'open' to 'resolved'