--- a/src/hotspot/share/gc/z/zWorkers.cpp Wed Nov 20 10:37:46 2019 +0100
+++ b/src/hotspot/share/gc/z/zWorkers.cpp Wed Nov 20 10:37:46 2019 +0100
@@ -35,15 +35,16 @@
}
static uint calculate_nworkers_based_on_heap_size(double reserve_share_in_percent) {
- const int nworkers = ((MaxHeapSize * (reserve_share_in_percent / 100.0)) - ZPageSizeMedium) / ZPageSizeSmall;
+ const int nworkers = (MaxHeapSize * (reserve_share_in_percent / 100.0)) / ZPageSizeSmall;
return MAX2(nworkers, 1);
}
static uint calculate_nworkers(double cpu_share_in_percent) {
- // Cap number of workers so that we never use more than 10% of the max heap
- // for the reserve. This is useful when using small heaps on large machines.
+ // Cap number of workers so that we don't use more than 2% of the max heap
+ // for the small page reserve. This is useful when using small heaps on
+ // large machines.
return MIN2(calculate_nworkers_based_on_ncpus(cpu_share_in_percent),
- calculate_nworkers_based_on_heap_size(10.0));
+ calculate_nworkers_based_on_heap_size(2.0));
}
uint ZWorkers::calculate_nparallel() {