2.4Ghz Pentium 4 HT
Gentoo Linux 2.6.11
Values are in millions of operations per second, so larger values are better.

localAccesses

Io 31.8

Python 35.4

Ruby 17.1

localSets

Io 8.5

Python 30.6

Ruby 11.3

slotAccesses

Io 12.6

Python 7.7

Ruby 4.2

slotSets

Io 3.8

Python 6.4

Ruby 7.2

blockActivations

Io 2.1

Python 1.5

Ruby 2.4

instantiations

Io 2.1

Python 1.8

Ruby 1.2

versions

Io 20050528
Python 2.4.0 final 0
Ruby 1.8