add GC selection for dedicated ergonomics profile

microsoft · Jul 26, 2023 · 9faa7c0 · 9faa7c0
1 parent 66f39a1
commit 9faa7c0
Showing 1 changed file with 29 additions and 6 deletions.
diff --git a/src/hotspot/share/gc/shared/gcConfig.cpp b/src/hotspot/share/gc/shared/gcConfig.cpp
@@ -96,18 +96,41 @@ void GCConfig::fail_if_non_included_gc_is_selected() {
 }
 
 void GCConfig::select_gc_ergonomically() {
-  if (os::is_server_class_machine()) {
+  if (strcmp(ErgonomicsProfile, "shared") == 0) {
+    if (os::is_server_class_machine()) {
 #if INCLUDE_G1GC
-    FLAG_SET_ERGO_IF_DEFAULT(UseG1GC, true);
+      FLAG_SET_ERGO_IF_DEFAULT(UseG1GC, true);
 #elif INCLUDE_PARALLELGC
-    FLAG_SET_ERGO_IF_DEFAULT(UseParallelGC, true);
+      FLAG_SET_ERGO_IF_DEFAULT(UseParallelGC, true);
 #elif INCLUDE_SERIALGC
-    FLAG_SET_ERGO_IF_DEFAULT(UseSerialGC, true);
+      FLAG_SET_ERGO_IF_DEFAULT(UseSerialGC, true);
 #endif
-  } else {
+    } else {
+#if INCLUDE_SERIALGC
+      FLAG_SET_ERGO_IF_DEFAULT(UseSerialGC, true);
+#endif
+    }
+  } else if (strcmp(ErgonomicsProfile, "dedicated") == 0) {
+    phys_mem = os::physical_memory();
+    if (os::active_processor_count() <= 1) {
 #if INCLUDE_SERIALGC
-    FLAG_SET_ERGO_IF_DEFAULT(UseSerialGC, true);
+      FLAG_SET_ERGO_IF_DEFAULT(UseSerialGC, true);
+#endif
+    } else if (phys_mem >= 16*G){
+#if INCLUDE_ZGC
+      FLAG_SET_ERGO_IF_DEFAULT(UseZGC, true);
 #endif
+    } else if (phys_mem > 2048*M){
+#if INCLUDE_G1GC
+      FLAG_SET_ERGO_IF_DEFAULT(UseG1GC, true);
+#endif
+    } else { 
+#if INCLUDE_PARALLELGC
+      FLAG_SET_ERGO_IF_DEFAULT(UseParallelGC, true);
+#endif
+    }
+  } else {
+    ShouldNotReachHere();
   }
 }