Hello,

I'm using the following primitive script to take a look at a particular line in a very large (3 gb) file. It takes forever (more than 30-40 minutes) though, so I'm wondering if anyone has any suggestions as to how to make this faster? 

#!/usr/bin/perl                                                       
+              
use Tie::File;                                                        
+              
                                                                      
+              
$infile = '/path/to/myfile.xml';
tie @array, 'Tie::File', $infile or die $!;                           
+              
print $array[64366480];

[download]

Doing the equivalent in AWK took 3 minutes, but as I need to expand this I'd prefer if I could stay with Perl.

On a sidenote I ran out of memory if I used a simple while loop, which surprised me as that shouldn't slurp the file as say a foreach?

Thanks in advance.

In reply to Speed and memory issue with large files by firmament

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