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Hi,
at a customer's place we noticed a performance problem while rendering
some (mostly large) pages. The culprit turned out to live in
Kernel/Output/HTML/OutputFilterTextURL.pm, somewhere here:
| for my $Key ( sort keys %{ $Self->{LinkHash} } ) {
| my $LinkSmall = $Self->{LinkHash}->{$Key};
| $LinkSmall =~ s/^(.{75}).*$/$1\[\.\.\]/gs;
| $Self->{LinkHash}->{$Key} =~ s/ //g;
| ${ $Param{Data} }
| =~ s/\Q$Key\E/<a href=\"$Self->{LinkHash}->{$Key}\"
target=\"_blank\" title=\"$Self->{LinkHash}->{$Key}\">$LinkSmall<\/a>/;
| }
This code compiles a new regex for each $Key and does its substitution
thingy. In our case, there were over 5000 (!) $Keys, so the whole thing
took about 12 seconds in total.
I've replaced this by one regex, under the assumption that the $Keys
have the form "##################329", i.e. a sufficient number of
hash signs and a decimal number, like so:
$Param{Data} =~ s/(#{10,}\d+)/$Self->_renderlink($1)/eg;
with a suitable method _renderlink, which constructs the link given the
Key.
Now my questions:
* Am I assuming right that the internal link keys have of this form?
* Would you be interested in a patch?
* What is this line doing up there:
$Self->{LinkHash}->{$Key} =~ s/ //g; ?
Thanks for any insight
- -- tomás
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