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Re: Expected speed of retrieve function (nstore retrieve)

by Eliya (Vicar)
on May 16, 2012 at 11:22 UTC ( #970812=note: print w/replies, xml ) Need Help??


in reply to Expected speed of retrieve function (nstore retrieve)

perl -e'$x[$_]=42 for 1..40_000_000; <>'
already needs around 1.5GB memory on my machine, and
perl -e'$x[$_]="foo" for 1..40_000_000; <>'

takes 3.3GB (checked with top).

So depending on what exactly you have in your array, and whether the process of retrieving involves making another copy of the data on the stack (not that unlikely, though I haven't checked), and what else you have running on your machine, you might well be running out of physical memory...

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[shmem]: sub wanted { push @files, $File::Find::name if $File::Find::name =~/\.mp3$/ }
[Lady_Aleena]: shmem, that is understandable! The two examples in File::Find don't make sense to me on a quick glance.
[marioroy]: LA if the find worked from Unix command line, or does it not. Likely a quoting issue inside Perl qx.
[Lady_Aleena]: marioroy, the find worked fine at the command line.
[marioroy]: LA, yeah. than there's no reason why it cannot work inside qx. But chatting is hard in PM. I cannot see the code now.
[shmem]: Lady_Aleena: sometimes a quick glance isn't enough.

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