benchmark: add benchmark for vm.createContext

PR-URL: https://github.com/nodejs/node/pull/29845
Refs: https://github.com/nodejs/node/issues/29842
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

1 files changed, 24 insertions, 0 deletions

diff --git a/benchmark/vm/create-context.js b/benchmark/vm/create-context.js
new file mode 100644
index 00000000000..d74cafe6a0a
--- /dev/null
+++ b/benchmark/vm/create-context.js
@@ -0,0 +1,24 @@
+'use strict';
+
+const common = require('../common.js');
+
+const bench = common.createBenchmark(main, {
+  n: [100]
+});
+
+const vm = require('vm');
+
+const ctxFn = new vm.Script(`
+  var b = Math.random();
+  var c = a + b;
+`);
+
+function main({ n }) {
+  bench.start();
+  let context;
+  for (let i = 0; i < n; i++) {
+    context = vm.createContext({ a: 'a' });
+  }
+  bench.end(n);
+  ctxFn.runInContext(context);
+}