You might check to see that HP-UX is reporting memory with the blocksize that you think it is. In some configurations it will reports memory usage in 2k blocks instead of 1k blocks.

If you are growing a large array, there is an algorithm for adding more elements to the array which sometimes doubles the memory used by the array. As a rule of thumb I assume that about one third of the memory in arrays is wasted.

You can fix this by pre-extending the array with an assignment statement: 

  $#huge_array=10000000;

[download]
This makes the length of the array 10 million without using perl's automatic array extender, so if you know how many array elements you have ahead of time, you don't have to waste the space.

It should work perfectly the first time! - toma

In reply to Re: Perl Process Size Limits? by toma
in thread Perl Process Size Limits? by geldmacher

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