1.9 mode slower on redblack benchmark than 1.8 mode
---------------------------------------------------
Key: JRUBY-5427
URL: http://jira.codehaus.org/browse/JRUBY-5427
Project: JRuby
Issue Type: Bug
Components: Performance
Affects Versions: JRuby 1.6RC1
Reporter: Charles Oliver Nutter
There's something fishy up with the perf numbers on this redblack benchmark
from git://gist.github.com/44301.git:
{noformat}
~/projects/gist-44301 ➔ jruby -v --server bm1.rb
jruby 1.6.0.RC1 (ruby 1.8.7 patchlevel 330) (2011-01-26 80ab30a) (Java
HotSpot(TM) Server VM 1.6.0_22) [darwin-i386-java]
./red_black_tree.rb:37 warning: instance variable @instance not initialized
5.216
2.908
2.943
2.913
3.051
~/projects/gist-44301 ➔ jruby --1.9 -v --server bm1.rb
jruby 1.6.0.RC1 (ruby 1.9.2 patchlevel 136) (2011-01-26 80ab30a) (Java
HotSpot(TM) Server VM 1.6.0_22) [darwin-i386-java]
/Users/headius/projects/gist-44301/red_black_tree.rb:37 warning: instance
variable @instance not initialized
5.799
3.627
3.566
3.664
3.585
{noformat}
I tracked some of the overhead to the redispatching we do in for the new !=
method (it does a full raw callMethod of ==) but that's about as far as I got
in exploring differential performance in 1.9 mode.
--
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators:
http://jira.codehaus.org/secure/Administrators.jspa
-
For more information on JIRA, see: http://www.atlassian.com/software/jira
---------------------------------------------------------------------
To unsubscribe from this list, please visit:
http://xircles.codehaus.org/manage_email
