src/share/vm/runtime/simpleThresholdPolicy.cpp

*** 136,148 ****
--- 136,154 ----
  void SimpleThresholdPolicy::initialize() {
    if (FLAG_IS_DEFAULT(CICompilerCount)) {
      FLAG_SET_DEFAULT(CICompilerCount, 3);
    }
    int count = CICompilerCount;
+ #ifdef _LP64
+   // On 64-bit systems, scale the number of compiler threads with
+   // the number of cores available on the system. Scaling is not
+   // performed on 32-bit systems because it can lead to exhaustion
+   // of the virtual memory address space available to the JVM.
    if (CICompilerCountPerCPU) {
      count = MAX2(log2_intptr(os::active_processor_count()), 1) * 3 / 2;
    }
+ #endif
    set_c1_count(MAX2(count / 3, 1));
    set_c2_count(MAX2(count - c1_count(), 1));
    FLAG_SET_ERGO(intx, CICompilerCount, c1_count() + c2_count());
  }