1 files changed, 46 insertions, 0 deletions
diff --git a/benchmark/async_hooks/async-local-storage-propagate-asyncresource.js b/benchmark/async_hooks/async-local-storage-propagate-asyncresource.js
new file mode 100644
index 0000000000..e5523452af
--- /dev/null
+++ b/benchmark/async_hooks/async-local-storage-propagate-asyncresource.js
@@ -0,0 +1,46 @@
+'use strict';
+const common = require('../common.js');
+const { AsyncLocalStorage, AsyncResource } = require('async_hooks');
+
+/**
+ * This benchmark verifies the performance degradation of
+ * async resource propagation on the increasing number of
+ * active `AsyncLocalStorage`s.
+ *
+ * - AsyncLocalStorage.run() * storageCount
+ * - new AsyncResource()
+ * - new AsyncResource()
+ * ...
+ * - N new Asyncresource()
+ */
+const bench = common.createBenchmark(main, {
+  storageCount: [0, 1, 10, 100],
+  n: [1e3],
+});
+
+function runStores(stores, value, cb, idx = 0) {
+  if (idx === stores.length) {
+    cb();
+  } else {
+    stores[idx].run(value, () => {
+      runStores(stores, value, cb, idx + 1);
+    });
+  }
+}
+
+function runBenchmark(n) {
+  for (let i = 0; i < n; i++) {
+    new AsyncResource('noop');
+  }
+}
+
+function main({ n, storageCount }) {
+  const stores = new Array(storageCount).fill(0).map(() => new AsyncLocalStorage());
+  const contextValue = {};
+
+  runStores(stores, contextValue, () => {
+    bench.start();
+    runBenchmark(n);
+    bench.end(n);
+  });
+}