debug: more profiling for Automod

backend/src/utils/easyProfiler.ts

@@ -1,5 +1,6 @@
 import { Profiler } from "knub/dist/Profiler";
 import { performance } from "perf_hooks";
+import { SECONDS } from "../utils";
 
 export const startProfiling = (profiler: Profiler, key: string) => {
   const startTime = performance.now();
@@ -7,3 +8,21 @@ export const startProfiling = (profiler: Profiler, key: string) => {
     profiler.addDataPoint(key, performance.now() - startTime);
   };
 };
+
+export const calculateBlocking = (coarseness = 10) => {
+  let last = performance.now();
+  let result = 0;
+  const interval = setInterval(() => {
+    const now = performance.now();
+    const blockedTime = Math.max(0, now - last - coarseness);
+    result += blockedTime;
+    last = now;
+  }, coarseness);
+
+  setTimeout(() => clearInterval(interval), 10 * SECONDS);
+
+  return () => {
+    clearInterval(interval);
+    return result;
+  };
+};