patske.patch

diff --git a/benchmark/http_simple_auto.js b/benchmark/http_simple_auto.js
index f72cc01..c0dffea 100644
--- a/benchmark/http_simple_auto.js
+++ b/benchmark/http_simple_auto.js
@@ -7,6 +7,7 @@
 //   <target> Target to benchmark, e.g. `bytes/1024` or `buffer/8192`.
 //
 
+var net = require("net");
 var path = require("path");
 var http = require("http");
 var spawn = require("child_process").spawn;
@@ -100,8 +101,12 @@ server.listen(port, function () {
   process.argv[n] = url + process.argv[n];
 
   var cp = spawn('ab', process.argv.slice(2));
-  cp.stdout.pipe(process.stdout);
-  cp.stderr.pipe(process.stderr);
+  var stdout = new net.Socket({fd: 1});
+  var stderr = new net.Socket({fd: 2});
+  stdout.unref();
+  stderr.unref();
+  cp.stdout.pipe(stdout);
+  cp.stderr.pipe(stderr);
   cp.on('exit', function() {
     server.close();
     process.nextTick(dump_mm_stats);