JRuby invokedynamic updates for November

[Stephen Bannasch]

At 3:29 AM -0600 12/1/11, Charles Oliver Nutter wrote:
>This is a pretty disappointing finding. I'm not yet sure whether it's
>a bug in SwitchPoint optimization or in JRuby's use of SwitchPoint,
>but I'd like to see your numbers with and without this flag.

Latest JRuby master, on Java 1.6.0_27, macosx-port (1.7.0) amd mlvm (1.8.0)

Summary: without changing SwitchPoint mlvm performance is similar to 1.6.0_27 -- macosx-port (1.7.0) is about 50% slower onrexml test

Ruby version: jruby 1.7.0.dev (ruby-1.8.7-p352) (2011-12-01 586f44f) (Java HotSpot(TM) 64-Bit Server VM 1.6.0_27) [darwin-x86_64-java]

                              user     system      total        real
  rexml                   3.847000   0.000000   3.847000 (  3.847000)
  hpricot                 0.458000  0.000000   0.458000 (  0.458000)
  jdom_document_builder   0.240000   0.000000   0.240000 (  0.240000)
  nokogiri                0.413000   0.000000   0.413000 (  0.413000)


Ruby version: jruby 1.7.0.dev (ruby-1.8.7-p352) (2011-12-01 586f44f) (OpenJDK 64-Bit Server VM 1.7.0-internal) [darwin-x86_64-java]

                              user     system      total        real
  rexml                   6.469000   0.000000   6.469000 (  6.469000)
  hpricot                 0.522000  0.000000   0.522000 (  0.522000)
  jdom_document_builder   0.221000   0.000000   0.221000 (  0.221000)
  nokogiri                0.409000   0.000000   0.409000 (  0.409000)

Ruby version: jruby 1.7.0.dev (ruby-1.8.7-p352) (2011-12-01 586f44f) (OpenJDK 64-Bit Server VM 1.8.0-internal) [darwin-amd64-java]

                              user     system      total        real
  rexml                   4.093000   0.000000   4.093000 (  4.094000)
  hpricot                 0.434000  0.000000   0.434000 (  0.434000)
  jdom_document_builder   0.226000   0.000000   0.226000 (  0.226000)
  nokogiri                0.441000   0.000000   0.441000 (  0.441000)

Testing with: jruby -Xinvokedynamic.invocation.switchpoint=false

Summary: slightly faster on macosx-port (1.7.0), somewhat slower on mlvm

Ruby version: jruby 1.7.0.dev (ruby-1.8.7-p352) (2011-12-01 586f44f) (OpenJDK 64-Bit Server VM 1.7.0-internal) [darwin-x86_64-java]

                              user     system      total        real
  rexml                   6.120000   0.000000   6.120000 (  6.120000)
  hpricot                 0.555000  0.000000   0.555000 (  0.555000)
  jdom_document_builder   0.276000   0.000000   0.276000 (  0.276000)
  nokogiri                0.492000   0.000000   0.492000 (  0.492000)

Ruby version: jruby 1.7.0.dev (ruby-1.8.7-p352) (2011-12-01 586f44f) (OpenJDK 64-Bit Server VM 1.8.0-internal) [darwin-amd64-java]

                              user     system      total        real
  rexml                   4.580000   0.000000   4.580000 (  4.580000)
  hpricot                 0.495000  0.000000   0.495000 (  0.495000)
  jdom_document_builder   0.251000   0.000000   0.251000 (  0.252000)
  nokogiri                0.496000   0.000000   0.496000 (  0.496000)