* sizing heuristics. We are keeping leeway in order to be prepared for work-load
* variations.
*/
-#define SGEN_MAX_PAUSE_TIME 30
-#define SGEN_MAX_PAUSE_MARGIN 0.66f
+#define SGEN_DEFAULT_MAX_PAUSE_TIME 30
+#define SGEN_DEFAULT_MAX_PAUSE_MARGIN 0.66f
+
+
+#define SGEN_PAUSE_MODE_MAX_PAUSE_MARGIN 0.5f
+
+/*
+ * In practice, for nurseries smaller than this, the parallel minor tends to be
+ * ineffective, even leading to regressions. Avoid using it for smaller nurseries.
+ */
+#define SGEN_PARALLEL_MINOR_MIN_NURSERY_SIZE (1 << 24)
#endif