*** old/src/share/vm/runtime/arguments.cpp	Thu Mar 15 15:19:37 2012
--- new/src/share/vm/runtime/arguments.cpp	Thu Mar 15 15:19:37 2012

*** 2521,2539 ****
--- 2521,2530 ----
        // locality.  A minor effect may be that larger PLABs reduce the
        // number of PLAB allocation events during gc.  The value of 8kw
        // was arrived at by experimenting with specjbb.
        FLAG_SET_CMDLINE(uintx, OldPLABSize, 8*K);  // Note: this is in words
  
        // CompilationPolicyChoice=0 causes the server compiler to adopt
        // a more conservative which-method-do-I-compile policy when one
        // of the counters maintained by the interpreter trips.  The
        // result is reduced startup time and improved specjbb and
        // alacrity performance.  Zero is the default, but we set it
        // explicitly here in case the default changes.
        // See runtime/compilationPolicy.*.
        FLAG_SET_CMDLINE(intx, CompilationPolicyChoice, 0);
  
        // Enable parallel GC and adaptive generation sizing
        FLAG_SET_CMDLINE(bool, UseParallelGC, true);
        FLAG_SET_DEFAULT(ParallelGCThreads,
                         Abstract_VM_Version::parallel_worker_threads());