Charles Oliver Nutter wrote:
So, it's time to bring up this question. ObjectSpace makes JRuby so much
slower, I think it's time to consider disabling it by default.
For example, here's the fractal benchmark, which generates a text-based
mandelbrot:
With ObjectSpace: Ruby Elapsed 45.967000
Without ObjectSpace: Ruby Elapsed 4.280000
We have also made modifications to allow ObjectSpace.each_object(Class)
to work even when ObjectSpace is disabled, by tracking an in-memory
graph of classes and subclasses. This allows the most visible use case
for ObjectSpace--test/unit--to continue working until we can patch it to
not use ObjectSpace.
Attached: a patch to flip -O from disabling to enabling ObjectSpace,
with it disabled by default.
- Charlie
Index: src/org/jruby/RubyInstanceConfig.java
===================================================================
--- src/org/jruby/RubyInstanceConfig.java (revision 4774)
+++ src/org/jruby/RubyInstanceConfig.java (working copy)
@@ -40,7 +40,7 @@
private PrintStream output = System.out;
private PrintStream error = System.err;
private Profile profile = Profile.DEFAULT;
- private boolean objectSpaceEnabled = true;
+ private boolean objectSpaceEnabled = false;
private String currentDirectory;
private Map environment;
private String[] argv = {};
Index: src/org/jruby/util/CommandlineParser.java
===================================================================
--- src/org/jruby/util/CommandlineParser.java (revision 4774)
+++ src/org/jruby/util/CommandlineParser.java (working copy)
@@ -66,7 +66,7 @@
private String[] scriptArguments = null;
private boolean shouldRunInterpreter = true;
- private boolean objectSpaceEnabled = true;
+ private boolean objectSpaceEnabled = false;
private boolean compilerEnabled = false;
private boolean yarv = false;
private boolean rubinius = false;
@@ -137,7 +137,7 @@
assumeLoop = true;
break;
case 'O' :
- objectSpaceEnabled = false;
+ objectSpaceEnabled = true;
break;
case 'C' :
compilerEnabled = true;
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