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8255047: Add HotSpot UseDebuggerErgo flags

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Reviewed-by: dcubed, dholmes
This commit is contained in:
Stefan Karlsson 2020-10-22 08:24:51 +00:00
parent 211bb62a90
commit ae72b5283b
4 changed files with 51 additions and 3 deletions
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18
src/hotspot/share/runtime/arguments.cpp
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@ -3901,6 +3901,22 @@ bool Arguments::handle_deprecated_print_gc_flags() {
return true;
}
static void apply_debugger_ergo() {
if (UseDebuggerErgo) {
// Turn on sub-flags
FLAG_SET_ERGO_IF_DEFAULT(UseDebuggerErgo1, true);
FLAG_SET_ERGO_IF_DEFAULT(UseDebuggerErgo2, true);
}
if (UseDebuggerErgo2) {
// Debugging with limited number of CPUs
FLAG_SET_ERGO_IF_DEFAULT(UseNUMA, false);
FLAG_SET_ERGO_IF_DEFAULT(ConcGCThreads, 1);
FLAG_SET_ERGO_IF_DEFAULT(ParallelGCThreads, 1);
FLAG_SET_ERGO_IF_DEFAULT(CICompilerCount, 2);
}
}
// Parse entry point called from JNI_CreateJavaVM
jint Arguments::parse(const JavaVMInitArgs* initial_cmd_args) {
@ -4097,6 +4113,8 @@ jint Arguments::parse(const JavaVMInitArgs* initial_cmd_args) {
}
#endif
apply_debugger_ergo();
return JNI_OK;
}