the very last thing to happen in these failing processes is basically:
Are you sure about that? I would guess that you're seeing your "Process completed successfully" message in your logs, but can logprint() fail in any other way? Have you tried capturing the process's STDOUT and STDERR to inspect that for any messages?

Am I sure? 99.9% yes - this particular logging function is very simple and on the local filesystem where there are no other issues (and plenty of other code succeeding doing this exact same thing most of the time).

You make an interesting point about the output! While we monitor STDOUT/STDERR in some cases we also throw it away in others so I've added some extra monitoring there.

Another thought: What does your system call look like? Is it a single string, as in system("/path/to/script.pl")?

Yep - in this case it's a string passed to the shell, so the shell problem does come into play so I'll have a look at that angle in a little more detail.

What does seem to be consistent is that where a single script is making multiple system calls, when the problem happens it keeps happening to that script (so some sort of state somewhere is going squiffy). But you I log into the same server at the same time, run the same code and the problem is not reproducible (the best kind of bug, if you're a bug!).

In reply to Re^4: system >> 8 is non-zero when child exits with exit(0) by bjdean
in thread system >> 8 is non-zero when child exits with exit(0) by bjdean

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