From: Colin Mackenzie <colmac@...>
Date: 2009-01-29T04:36:07+09:00
Subject: Ruby on Solaris 10 performance problems

We just installed ruby on a
Sun T1000, 6 core UltraSPARC T1 cpu, 4G memory  , Solaris 10

Right now Windows is out performing an Ultra SPARC by 25 seconds! Does
anyone know why this would be the case. I have downloaded ruby and
compiled it on the hardware, i have tried the binaries from sunfreeware
and the results are the same. Actually, the results from my compile were
a second or two worse than the binaries from SUN!


This is the program ran for the bench mark. I called it t.rb

 require 'benchmark'

    array = (1..1000000).map { rand }

    Benchmark.bmbm do |x|
      x.report("sort!") { array.dup.sort! } #this sorts the array.
      x.report("sort")  { array.dup.sort  } #this makes a copy of the
array and sorts it.
    end


###########################################

Solaris v10
# ruby t.rb
Rehearsal -----------------------------------------
sort!  29.450000   0.020000  29.470000 ( 29.458899)
sort   29.760000   0.010000  29.770000 ( 29.772163)
------------------------------- total: 59.240000 sec

            user     system      total        real
sort!  29.060000   0.010000  29.070000 ( 29.064410)
sort   29.070000   0.000000  29.070000 ( 29.076217)
#

Windows

Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

C:\Documents and Settings\cmackenzie>ruby t.rb
Rehearsal -----------------------------------------
sort!   4.735000   0.000000   4.735000 (  4.813000)
sort    4.359000   0.000000   4.359000 (  4.390000)
-------------------------------- total: 9.094000 sec
                      user     system      total        real
sort!   4.313000   0.000000   4.313000 (  4.375000)
sort    4.297000   0.015000   4.312000 (  4.422000)

C:\Documents and Settings\cmackenzie>

Ubuntu Linux

colmac@sideshowbob: ruby t.rb
Rehearsal -----------------------------------------
sort!   3.310000  0.010000   3.320000 (  3.317860)
sort    3.250000  0.020000   3.270000 (  3.270037)
-------------------------------- total: 6.5890000 sec

            user     system      total        real
sort!   3.280000  0.030000   3.10000   ( 3.318575)
sort    3.250000  0.020000   3.270000  ( 3.269284)
colmac@sideshowbob:
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