2 files changed, 41 insertions, 0 deletions
diff --git a/cli/bench/async_ops.js b/cli/bench/async_ops.js
new file mode 100644
index 000000000..ac4eb6858
--- /dev/null
+++ b/cli/bench/async_ops.js
@@ -0,0 +1,19 @@
+// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
+const queueMicrotask = globalThis.queueMicrotask || process.nextTick;
+let [total, count] = typeof Deno !== "undefined"
+  ? Deno.args
+  : [process.argv[2], process.argv[3]];
+
+total = total ? parseInt(total, 0) : 50;
+count = count ? parseInt(count, 10) : 100000;
+
+async function bench(fun) {
+  const start = Date.now();
+  for (let i = 0; i < count; i++) await fun();
+  const elapsed = Date.now() - start;
+  const rate = Math.floor(count / (elapsed / 1000));
+  console.log(`time ${elapsed} ms rate ${rate}`);
+  if (--total) queueMicrotask(() => bench(fun));
+}
+
+bench(() => Deno.core.opAsync("op_void_async"));
diff --git a/cli/bench/tcp.js b/cli/bench/tcp.js
new file mode 100644
index 000000000..826f5f87b
--- /dev/null
+++ b/cli/bench/tcp.js
@@ -0,0 +1,22 @@
+// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
+
+const listener = Deno.listen({ port: 4500 });
+const response = new TextEncoder().encode(
+  "HTTP/1.1 200 OK\r\nContent-Length: 12\r\n\r\nHello World\n",
+);
+
+// Accept a connection and write packets as fast as possible.
+async function acceptWrite() {
+  const conn = await listener.accept();
+  try {
+    while (true) {
+      await conn.write(response);
+    }
+  } catch {
+    // Pass
+  }
+  conn.close();
+}
+
+await acceptWrite();
+await acceptWrite();