crucible: Schedule loadavg calculator as fast as possible

We want the loadavg calculation to be almost real-time. If SCHED_ISO is not supported, it will use whatever the service was started with (SCHED_OTHER by default). Signed-off-by: Kai Krakow <[email protected]>
Zygo · Nov 30, 2021 · 054708d · 054708d
1 parent e795d87
commit 054708d
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/lib/task.cc b/lib/task.cc
@@ -594,6 +594,8 @@ namespace crucible {
 	void
 	TaskMasterState::loadavg_thread_fn()
 	{
+		sched_param param = { .sched_priority = 0 };
+		pthread_setschedparam(pthread_self(), SCHED_ISO, &param);
 		pthread_setname_np(pthread_self(), "load_tracker");
 		while (!m_cancelled) {
 			adjust_thread_count();