Re^3: Memory usage of a "sub" in mod

and then undef $page->{html}. Shouldn't "undef" be enough?

That depends upon what that hash entry actually is. If it is a reference (or something containing a reference) to data which is held elsewhere, you just clear that slot from the reference, but not the referenced data.

Consider:

perl -le '$foo = "bar"; $h->{foo} = \$foo; undef $h->{foo}; print "foo
+ :$foo:"'
foo :bar:
[download]

which is different to

perl -le '$foo = "bar"; $h->{foo} = \$foo; undef ${$h->{foo}}; print "
+foo :$foo:"'
foo ::
[download]

where the referenced data is cleared.

--shmem

_($_=" "x(1<<5)."?\n".q·/)Oo.  G°\        /
                              /\_¯/(q    /
----------------------------  \__(m.====·.(_("always off the crowd"))."·
");sub _{s./.($e="'Itrs `mnsgdq Gdbj O`qkdq")=~y/"-y/#-z/;$e.e && print}

Comment on Re^3: Memory usage of a "sub" in mod_perl Select or Download Code

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Re^4: Memory usage of a "sub" in mod_perl by diego_de_lima (Beadle) on May 23, 2008 at 20:09 UTC
In my case, $page->{html} is a simple string, like: $page->{html} = '...ALL HTML HERE 2 MB OF PLAIN TEXT...'; So, isn´t undef $page->{html} enought? Diego de Lima	[reply]
Re^5: Memory usage of a "sub" in mod_perl by shmem (Chancellor) on May 23, 2008 at 20:26 UTC
Yes, that should do - but only if there's no reference to that string elsewhere. --shmem _($_=" "x(1<<5)."?\n".q·/)Oo. G°\ / /\_¯/(q / ---------------------------- \__(m.====·.(_("always off the crowd"))."· ");sub _{s./.($e="'Itrs `mnsgdq Gdbj O`qkdq")=~y/"-y/#-z/;$e.e && print}	[reply]