>>>>> "Eric" == Eric Wong <normalperson@xxxxxxxx> writes:
Eric> Part of it is Perl, which (as far as I know) never frees allocated
Eric> memory back to the OS (although Perl can reuse the allocated memory for
Eric> other things).
It does on Linux, of all things. That's because Linux has a smarter
malloc/free that uses mmap(2) for the large chunks. On Linux, Perl memory
size can apparently grow and shrink nicely. The "old school" advice about
Perl comes from sbrk(2)-driven malloc/free.
Try:
$x[1e6] = "0";
sleep 10; # do a ps here
@x = ();
sleep 30; # do a ps here
and watch the process on Linux. If I'm right, this should show a large
process, then a smaller one.
If you're getting a growing process though, you probably have a circular data
reference. Maybe you have a tree with backpointers, and those backpointers
should have been weakened?
--
Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095
<merlyn@xxxxxxxxxxxxxx> <URL:http://www.stonehenge.com/merlyn/>
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