From: Mike Sassak <msassak@...>
Date: 2009-08-20T02:17:26+09:00
Subject: Re: Confirm my Performance Test Against Java?

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On Wed, Aug 19, 2009 at 9:31 AM, Ben Christensen
<benjchristensen@gmail.com>wrote:

> I'm evaluating Ruby for use in a variety of systems that are planned by
> default to be Java.
>
> I've started down a path of doing various performance tests to see what
> kind of impact will occur by using Ruby and in my first test the numbers
> are very poor - so poor that I have to question if I'm doing something
> wrong.
>
> I've tried it on both Linux and Mac OSX and get similar performance
> numbers on each - differences being hardware, but the ratio between the
> results about the same.
>
> Please take a look at my blog post on my test results and view the
> source code and let me know if I'm doing something completely wrong with
> the Ruby code or execution - or if these are accurate numbers.
>
>
> http://benjchristensen.com/2009/08/18/initial-impressions-on-ruby-performance/
>
> NOTE: This is not an attempt to start a flame war. This is a legitimate
> effort to take a good look at Ruby and let the numbers speak for
> themselves in making decisions for what types of applications I can
> choose to use Ruby for without sacrificing the performance of a mature
> platform such as Java.
>

Hi Ben,

The point everyone keeps bringing up--whether this benchmark is indicative
of what you will actually be doing with Ruby, and whether it is "fast
enough"--is worth considering for any project, but the fact remains that for
many things, Java is going to execute faster than Ruby. You can certainly
optimize Ruby code (and yes, writing Ruby extensions in C is actually pretty
easy), but that's not why many of us love Ruby. We love it because it allows
you to turn FileReadParse.java into this: http://gist.github.com/170466.
Now, in the spirit of good fun:

$ ruby file_read_parse_2.rb file_read_parse_2.rb
Starting to read file ...
The number of tokens is: 39.
It took 0.189 ms

$ ruby file_read_parse_2.rb FileReadParse.java
Starting to read file ...
The number of tokens is: 159.
It took 0.215 ms

See? :-)

Good luck with Ruby, and don't be afraid to ask more questions!
Mike


> Thank you.
>
> Ben
> --
> Posted via http://www.ruby-forum.com/.
>
>

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