Hello Tara, and welcome to the Monastery!

One obvious slow-down is the shell-out call to system grep:

$final_data = ` grep "$key_pattern" "${indir}/${lkp_file_name}" |cut -
+d"|" -f"$data_location"`;

[download]

which is expensive in itself and rendered especially so by being nested inside three loops. Try replacing it with a call to Perl’s inbuilt grep and see if that produces a significant speedup.

Hope that helps,

Athanasius <°(((>< contra mundum Iustus alius egestas vitae, eros Piratica,

In reply to Re: Perl Script performance issue by Athanasius
in thread Perl Script performance issue by Tara

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