OK, I tested this with v5.8.0 built for i386-linux-thread-multi.

Test data was a 32M, 2.5 million line file.
Machine is a 1740Mhz Althon, 512Mb real memory, 768Mb swap.

Results: 

my_slurp:

Try 1
Took 11 seconds.
Try 2
Took 16 seconds.
Try 3
Took 15 seconds.

my_while:

Try 1
Took 4 seconds.
Try 2
Took 5 seconds.
Try 3
Took 4 seconds.

my_file:

Try 1
Took 33 seconds.
Try 2
Took 19 seconds.
Try 3
Took 14 seconds.

[download]

If the information in this post is inaccurate, or just plain wrong, don't just downvote - please post explaining what's wrong.
That way everyone learns.

In reply to Re ^5: opening a file in a subroutine by BazB
in thread opening a file in a subroutine by abhishes

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