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tamouse m. wrote in post #1116598:

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[#409142] Re: Link To Masses Of External Data In Openoffice? — "Austin J." <lists@...> 2013/07/26

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Re: Kernel.caller Performance Across Different Ruby Versions

From: Tony Arcieri <tony.arcieri@...>
Date: 2013-07-16 20:24:11 UTC
List: ruby-talk #408947
Kernel.caller is very expensive on JRuby too, much more so than MRI.

I'm curious why you're benchmarking it in the first place. `caller' is not
something you want to be calling very often


On Tue, Jul 16, 2013 at 10:40 AM, Peter Giacomo Lombardo <
lists@ruby-forum.com> wrote:

> I wrote a quick Ruby script to benchmark Kernel.caller using ruby-prof.
> I then ran that script manually across 3 Ruby versions.
>
> The results indicate that Kernel.caller is incrementally slower in newer
> Ruby versions.
>
> This seems counter-intuitive to me so what am I missing?  Is there
> something wrong in the way I'm benchmarking Kernel.caller or the test
> script itself?
>
> The test script with ruby-prof output is available here:
> https://gist.github.com/pglombardo/5978849
>
> A couple notes:
>
> * For each Ruby version, I ran the test suite 5 times and pasted the
> fastest output in the gist (based on total time)
> * Ruby versions were standard "out of the box" as installed by rbenv
> * The three Ruby versions were: 1.8.7-p374, 1.9.3-p448, 2.0.0-p247
>
> Test Summary:
>
> Kernel.caller Total Times across Ruby Versions
> (Each test makes 500 Kernel.caller calls with 1508 frames)
>
> Ruby 1.8.7-p374: 0.369ms
> Ruby 1.9.3p448 : 0.462ms
> Ruby 2.0.0-p247: 0.769ms
>
> Any input/guidance would be appreciated.  Thanks!
> Peter Giacomo Lombardo
>
> --
> Posted via http://www.ruby-forum.com/.
>
>


-- 
Tony Arcieri

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