ruby1.6 speed compared to 1.8 with/without threads

[Martin Povolný]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Hallo,

while porting our software from ruby1.6 to ruby1.8, we found some
performance issues.

Especially it seems that compiling ruby1.8 with pthreads enabled
(the way package is made in Debian GNU/Linux) gives poor results.

I wonder if other people have noticed this?

==============================================================
TEST: 1000.times { a = []; 4000.times {a << 1} }

ruby1.8 without pthread: 6.679s
ruby1.8 with pthread: 10.576s
ruby1.6: 5.755s

==============================================================
TEST: 1000.times { Array.new(3000).join ':' }

ruby1.8 without pthread: 8.087s
ruby1.8 with pthread: 10.503s
ruby1.6: 7.810s

==============================================================
TEST: 1000.times { s = ''; 2000.times {s << 'hello'} }

ruby1.8 without pthread: 5.030s
ruby1.8 with pthread: 6.807s
ruby1.6: 7.099s

==============================================================
TEST: 1000.times { def a; 'hello'; end; 2000.times { a } }

ruby1.8 without pthread: 5.311s
ruby1.8 with pthread: 8.386s
ruby1.6: 4.116s

==============================================================
TEST: 1000.times { h = {}; 1000.times {|t| h[t] = 'hello' } }

ruby1.8 without pthread: 4.064s
ruby1.8 with pthread: 6.436s
ruby1.6: 3.461s

==============================================================
TEST: 1000.times { 200.times {|t| eval('$test%d = \'hello\'' % t) } }

ruby1.8 without pthread: 6.816s
ruby1.8 with pthread: 8.507s
ruby1.6: 5.630s

==============================================================
TEST: 1000.times { ('X' * 100000).sub(/X/) {|s| s.downcase} }

ruby1.8 without pthread: 7.843s
ruby1.8 with pthread: 7.977s
ruby1.6: 7.405s

Regards,

- --
Martin Povolny

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.4 (GNU/Linux)
Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org

iD8DBQFBT+nADbrC2YihQUkRAjP2AJ96XSc8uwffThiJ5UqUehASrJh1nACfX/mV
Bdekb8DystxQ00mIOm5Uw0g=
=ztuy
-----END PGP SIGNATURE-----