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node_modules/tedious/benchmarks/request/rpcrequest-payload-varbinary.js

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+const { createBenchmark } = require('../common');
+
+const { Request, TYPES } = require('tedious');
+const RpcRequestPayload = require('tedious/lib/rpcrequest-payload');
+
+const { Readable } = require('stream');
+
+const bench = createBenchmark(main, {
+  n: [10, 100],
+  size: [
+    1024 * 1024,
+    10 * 1024 * 1024,
+    50 * 1024 * 1024,
+  ]
+});
+
+function main({ n, size }) {
+  const buf = Buffer.alloc(size, 'x');
+
+  const request = new Request('...', () => {});
+  request.addParameter('value', TYPES.VarBinary, buf);
+
+  let i = 0;
+  bench.start();
+
+  (function cb() {
+    if (i++ === n) {
+      bench.end(n);
+      return;
+    }
+
+    const payload = new RpcRequestPayload(request.sqlTextOrProcedure, request.parameters, Buffer.alloc(0), {}, undefined);
+    const stream = Readable.from(payload);
+    stream.on('data', () => {});
+    stream.on('end', cb);
+  })();
+}