while you fd limit may be sufficient you may have a ulimit in the shell that the script is called from, run 
ulimit -n

[download]
and if it's too low run 
ulimit -n $bigNumber

[download]

In reply to Re: perl bug? illegal seek with dup and many filehandles by Utilitarian
in thread perl bug? illegal seek with dup and many filehandles by flipper

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