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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

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