[sgen] Performance improvement for ms_block_size computations

[mono.git] / mono / sgen / sgen-conf.h

diff --git a/mono/sgen/sgen-conf.h b/mono/sgen/sgen-conf.h
index 324009cc2951b2fc482d09f79122907bf41193bd..53e962c2b702e7ea8a893dc940ea8d42d227b967 100644 (file)
--- a/mono/sgen/sgen-conf.h
+++ b/mono/sgen/sgen-conf.h
@@ -211,4 +211,21 @@ typedef mword SgenDescriptor;
 #define SGEN_DEFAULT_NURSERY_SIZE      (1 << 22)
 #define SGEN_DEFAULT_NURSERY_MAX_SIZE  (1 << 25)
 
+/*
+ * We are trying to keep pauses lower than this (ms). We use it for dynamic nursery
+ * sizing heuristics. We are keeping leeway in order to be prepared for work-load
+ * variations.
+ */
+#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