From b06f8fe0b96449f85d5ad50d77980a63c45865ca Mon Sep 17 00:00:00 2001
From: Robert Nagy <ronagy@icloud.com>
Date: Sun, 15 Dec 2019 13:44:15 +0100
Subject: [PATCH] benchmark: manywrites back pressure

Make manywrites benchmark a bit more realistic by
taking back pressure into account. Otherwise
memory usage would no correspond well with
real world usage.
---
 benchmark/streams/writable-manywrites.js | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/benchmark/streams/writable-manywrites.js b/benchmark/streams/writable-manywrites.js
index 0ed38d0357a438..ebd83779b76158 100644
--- a/benchmark/streams/writable-manywrites.js
+++ b/benchmark/streams/writable-manywrites.js
@@ -20,8 +20,13 @@ function main({ n, sync }) {
   };
 
   bench.start();
-  for (var k = 0; k < n; ++k) {
-    s.write(b);
+
+  let k = 0;
+  function run() {
+    while (k++ < n && s.write(b));
+    if (k >= n)
+      bench.end(n);
   }
-  bench.end(n);
+  s.on('drain', run);
+  run();
 }