1 files changed, 16 insertions, 0 deletions
diff --git a/cli/bench/stdio/stdio.js b/cli/bench/stdio/stdio.js
new file mode 100644
index 000000000..0663d6fd7
--- /dev/null
+++ b/cli/bench/stdio/stdio.js
@@ -0,0 +1,16 @@
+// From https://github.com/just-js/benchmarks/tree/main/01-stdio
+// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
+
+const blocksize = parseInt(Deno.args[0] || 65536);
+const buf = new Uint8Array(blocksize);
+let size = 0;
+let reads = 0;
+
+let n = Deno.stdin.readSync(buf);
+while (n > 0) {
+  reads++;
+  size += n;
+  n = Deno.stdin.readSync(buf);
+}
+if (n < 0) throw new Error("Bad Read");
+console.log(`size ${size} reads ${reads} blocksize ${blocksize}`);