From: Navindra Umanee <navindra@...>
Date: 2005-03-11T17:23:50+09:00
Subject: Re: very slow IO (STDIN.gets and puts) on Linux, ruby 1.8.2_pre3

MiG <mig@1984.cz> wrote:
> So the solution is maybe to use getc and parse lines on my own...

Maybe you're missing the point.  

The two programs aren't doing the same amount of work; your benchmarks
aren't equivalent.  If you change the PHP benchmark slightly, you'll
likely see PHP is just as slow as Ruby.

[navindra@dot /tmp]$ time php -r 'while (fgets(STDIN));' < FILE
8.421u 2.334s 0:26.53 40.5%     0+0k 0+0io 2pf+0w
[navindra@dot /tmp]$ time ruby -e 'while gets;end' < FILE
11.676u 2.586s 0:39.44 36.1%    0+0k 0+0io 11pf+0w
[navindra@dot /tmp]$ time php -r 'while ($blah=fgets(STDIN));' < FILE
10.680u 2.372s 0:37.83 34.4%    0+0k 0+0io 10pf+0w

Cheers,
Navin.