feat: admissions control headspace for overhead

4 years ago · de1ab890c4
parent 4ee95349e6
commit de1ab890c4
2 changed files with 5 additions and 1 deletions
--- a/runtime/include/admissions_control.h
+++ b/runtime/include/admissions_control.h
@ -22,13 +22,15 @@
 */
 extern _Atomic uint64_t admissions_control_admitted;
 extern uint64_t         admissions_control_capacity;
+extern const double     admissions_control_overhead;

 static inline void
 admissions_control_initialize()
 {
 #ifdef ADMISSIONS_CONTROL
 	atomic_init(&admissions_control_admitted, 0);
-	admissions_control_capacity = runtime_worker_threads_count * ADMISSIONS_CONTROL_GRANULARITY;
+	admissions_control_capacity = runtime_worker_threads_count * ADMISSIONS_CONTROL_GRANULARITY
+	                              * ((double)1.0 - admissions_control_overhead);
 #endif
 }

--- a/runtime/src/admissions_control.c
+++ b/runtime/src/admissions_control.c
@ -2,3 +2,5 @@

 _Atomic uint64_t admissions_control_admitted;
 uint64_t         admissions_control_capacity;
+
+const double admissions_control_overhead = 0.2;