On 18 May 2011 20:30, Paul Johnson <p...@pjcj.net> wrote:
> On Wed, May 18, 2011 at 05:16:23PM -0700, Jim Green wrote:
>> Hello List!
>> I have a quick question about memory release in perl:
>>
>> {
>> my @array;
>>
>> foreach my $n (1..1e7 ) {
>> push @array, $n;
>> print "$n\n";
>> }
>> }
>>
>> print "sleeping\n";
>> sleep 600;
>>
>> after the code block, I epxect memory usage to drop to almost zero
>> because @array went out of scope. but when I do top after it executes
>> after the code block it still has huge memory usage..
>>
>> Could anyone give me some explanation?
>
> In general perl won't release memory back to the system, but will keep
> it around to be (possibly) reused later. If you subsequently create
> another similarly sized array you should notice that memory use remains
> roughly the same.
lets say I have a really big perl program, if I let the it run, the
memory usage will always increase until it exits?
is this the same for other language like c++ or java?
Thank you all!
Jim
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