1 files changed, 27 insertions, 0 deletions
diff --git a/cli/tests/workers_startup_bench.ts b/cli/tests/workers_startup_bench.ts
new file mode 100644
index 000000000..fbea4dc40
--- /dev/null
+++ b/cli/tests/workers_startup_bench.ts
@@ -0,0 +1,27 @@
+// Benchmark measures time it takes to start and stop a number of workers.
+const workerCount = 50;
+
+async function bench(): Promise<void> {
+  const workers: Worker[] = [];
+  for (let i = 1; i <= workerCount; ++i) {
+    const worker = new Worker("./subdir/bench_worker.ts");
+    const promise = new Promise(
+      (resolve): void => {
+        worker.onmessage = (e): void => {
+          if (e.data.cmdId === 0) resolve();
+        };
+      }
+    );
+    worker.postMessage({ cmdId: 0, action: 2 });
+    await promise;
+    workers.push(worker);
+  }
+  console.log("Done creating workers closing workers!");
+  for (const worker of workers) {
+    worker.postMessage({ action: 3 });
+    await worker.closed; // Required to avoid a cmdId not in table error.
+  }
+  console.log("Finished!");
+}
+
+bench();