src/share/vm/runtime/arguments.cpp
Index
Unified diffs
Context diffs
Sdiffs
Patch
New
Old
Previous File
Next File
*** old/src/share/vm/runtime/arguments.cpp Sun Dec 30 08:48:19 2012
--- new/src/share/vm/runtime/arguments.cpp Sun Dec 30 08:48:19 2012
*** 1081,1111 ****
--- 1081,1107 ----
}
FLAG_SET_DEFAULT(UseAdaptiveSizePolicy, false);
}
}
// If the user has chosen ParallelGCThreads > 0, we set UseParNewGC
// if it's not explictly set or unset. If the user has chosen
// UseParNewGC and not explicitly set ParallelGCThreads we
// set it, unless this is a single cpu machine.
void Arguments::set_parnew_gc_flags() {
assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC && !UseG1GC,
"control point invariant");
assert(UseParNewGC, "Error");
// Turn off AdaptiveSizePolicy for parnew until it is complete.
disable_adaptive_size_policy("UseParNewGC");
! if (ParallelGCThreads == 0) {
! FLAG_SET_DEFAULT(ParallelGCThreads,
! Abstract_VM_Version::parallel_worker_threads());
! if (ParallelGCThreads == 1) {
FLAG_SET_DEFAULT(UseParNewGC, false);
! FLAG_SET_DEFAULT(ParallelGCThreads, 0);
}
! if (FLAG_IS_DEFAULT(ParallelGCThreads)) {
! FLAG_SET_DEFAULT(ParallelGCThreads, Abstract_VM_Version::parallel_worker_threads());
! assert(ParallelGCThreads > 0, "We should always have at least one thread by default");
! } else if (ParallelGCThreads == 0) {
+ jio_fprintf(defaultStream::error_stream(),
! "The ParNew GC can not be combined with -XX:ParallelGCThreads=0\n");
+ vm_exit(1);
}
if (UseParNewGC) {
+
// By default YoungPLABSize and OldPLABSize are set to 4096 and 1024 respectively,
// these settings are default for Parallel Scavenger. For ParNew+Tenured configuration
// we set them to 1024 and 1024.
// See CR 6362902.
if (FLAG_IS_DEFAULT(YoungPLABSize)) {
*** 1128,1138 ****
--- 1124,1133 ----
warning("Forcing +ParGCUseLocalOverflow: needed if using compressed references");
}
FLAG_SET_DEFAULT(ParGCUseLocalOverflow, true);
}
assert(ParGCUseLocalOverflow || !UseCompressedOops, "Error");
}
}
// Adjust some sizes to suit CMS and/or ParNew needs; these work well on
// sparc/solaris for certain applications, but would gain from
// further optimization and tuning efforts, and would almost
src/share/vm/runtime/arguments.cpp
Index
Unified diffs
Context diffs
Sdiffs
Patch
New
Old
Previous File
Next File