Hi,

I'm using Tie::File in order to manipulate big CSV files. In particular I need to insert some lines when some conditions are satisfied.

Here my usage: 
...
tie @array, 'Tie::File', "$inputfile";
...
for (@array){ ...
splice @array, $pos, 0, "$lottorec";
...

[download]


I have a great performance problem with text files from about 5MB . In particular when it performs "splice" the system slowdown.

I don't know why I obtain this poor performance, I read in the documentation:

" C<push>, C<pop>, C<shift>, C<unshift>, and C<splice> cannot be deferred. When you perform one of these operations, any deferred data is written to the file and the operation is performed immediately. This may change in a future version. "

Please, can you tell me if Tie::File is ok for huge file modifications and if you know other ways to insert lines between CSV files in a smart (and simple) way.

Thanks.

In reply to Tie::File performance issue by A200560

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