Re: Speed

On Dec 2, 2005, at 12:09 PM, Octavian Rasnita wrote:

> Hi,
>
> I have some questions that I couldn't find an answer for:
>
> Which way of "inserting" vars in HTML::Template is the fastest?
> (or it doesn't make any difference?)
>
> *snip*

Someone can correct me if I'm wrong, but based on the usual perl speed 
generalizations, doing...

   $ht->param(foo => 1);
   $ht->param(bar => 2);
   $ht->param(baz => 3);

...will be slower than doing...

   $ht->param(foo => 1, bar => 2, baz => 3);

...because doing three method calls is more expansive than doing one 
and passing more data. But doing...

   $ht->param({ foo => 1, bar => 2, baz => 3 });

...should be even faster because it is more efficient to pass a single 
hashref in a method call than it is to pass a large list of arguments. 
I have not benchmarked these and have not looked at the under-lying 
code of the param method to be sure, but based on what I know about 
Perl and the speed of method calls and passing arguments, these are my 
assumptions.

> Is the speed of H::T affected if using the following options?

And I'm not sure about die_on_bad_params, but I do believe 
loop_context_vars and global_vars does add a performance hit because 
the engine then has to generate or handle more vars inside a loop than 
if they were turned off.


> Is there a better way of defining the $ht object than defining it for 
> every
> template needs to be parsed?

I don't have an answer for that.

-- 
Paul Baker

"The day Microsoft makes something that doesn't suck is probably the 
day they start making vacuum cleaners."
           -- Ernst Jan Plugge

GPG Key: http://homepage.mac.com/pauljbaker/public.asc



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