8348241: ZGC: Unnecessarily reinitialize ZFragmentationLimit's default value

zhengyu123 · zhengyu123 · commit a36e166ec9e6 · 2025-01-23T01:14:47.000Z
Reviewed-by: stefank
diff --git a/src/hotspot/share/gc/z/zArguments.cpp b/src/hotspot/share/gc/z/zArguments.cpp
@@ -141,10 +141,6 @@ void ZArguments::initialize() {
     FLAG_SET_ERGO_IF_DEFAULT(ZCollectionIntervalMajor, ZCollectionInterval);
   }
 
-  if (FLAG_IS_DEFAULT(ZFragmentationLimit)) {
-    FLAG_SET_DEFAULT(ZFragmentationLimit, 5.0);
-  }
-
   // Set medium page size here because MaxTenuringThreshold may use it.
   ZHeuristics::set_medium_page_size();
 

Original file line number	Diff line number	Diff line change
`@@ -141,10 +141,6 @@ void ZArguments::initialize() {`
`141`	`141`	`FLAG_SET_ERGO_IF_DEFAULT(ZCollectionIntervalMajor, ZCollectionInterval);`
`142`	`142`	`}`
`143`	`143`
`144`		`- if (FLAG_IS_DEFAULT(ZFragmentationLimit)) {`
`145`		`- FLAG_SET_DEFAULT(ZFragmentationLimit, 5.0);`
`146`		`- }`
`147`		`-`
`148`	`144`	`// Set medium page size here because MaxTenuringThreshold may use it.`
`149`	`145`	`ZHeuristics::set_medium_page_size();`
`150`	`146`