There's also ltrace, which is similar to strace but can also trace function calls into dynamic libraries.

But note that it would typically produce huge amounts of output, and as a result may slow down processes significantly. So, it's not necessarily a good idea to use it as a general purpose long-time monitoring tool for longer running "production" processes. Attaching it in a specific problem situation, though, might help figuring out what's going on.

In reply to Re: Information about running Perl script by Eliya
in thread Information about running Perl script by Sewi

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