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Perl will only call a particular signal handler once per signal number - no matter how many times it recieves that signal type *before* handling it.

But there's a general flaw with your stress code; you have multiple processes all writing to stdout (which I presume is redirected to a file), and that's likely to lose or duplicate output, even with $|=1:

$ cat /tmp/p1 #!/usr/bin/perl $| = 1; for (1..10) { if (fork == 0) { print "$_\n" for 1..100; exit; } } $ perl588 /tmp/p1 > /tmp/x ; wc -l /tmp/x 900 /tmp/x $ perl588 /tmp/p1 > /tmp/x ; wc -l /tmp/x 983 /tmp/x $ perl588 /tmp/p1 > /tmp/x ; wc -l /tmp/x 1000 /tmp/x
Either open the file in append mode and only syswrite to it, or have each process write to a separate file.


In reply to Re^6: Setting signal handlers by dave_the_m
in thread Setting signal handlers by andyford

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