[ruby-core:24224] Re: Performance issue with Prime class under Ruby 1.8.6 in Windows

Hi Roger,

Yeah, sorry, I was trying to say that Prime class is slow in 1.8.6. I did a
test on Ubuntu, same Ruby version down to patchlevel and the results are
similar. I've updated http://gist.github.com/142907 to include the Ubuntu
results, so that you can see it for yourself.

I'm willing to submit a patch, but I am unclear what the next steps are.

Thanks,

Srdjan

On Wed, Jul 8, 2009 at 6:14 PM, Roger Pack <[e-mail]> wrote:

> > So you're suggesting that the Prime class be optimized is that right?
> > =r
>
> Oh I see what you're saying--windows 1.8.6 Prime class is slow.  Have
> you compared it with Linux?
>
> The good news is that with 1.8 on windows:
>
>      user     system      total        real
> my solution  7.891000   0.015000   7.906000 (  7.921875)
> library solution 55.094000   0.016000  55.110000 ( 55.265625)
>
> but with 1.9
>      user     system      total        real
> my solution  2.234000   0.000000   2.234000 (  2.234375)
> library solution  0.094000   0.000000   0.094000 (  0.093750)
>
> :)
>
> But test it out on Linux and make sure.
>
> If it's a windows bug then run a profiler against it, fix it, submit a
> patch [?]
>
> =r
>
>