diff --git a/benchmark/dgram/array-vs-concat.js b/benchmark/dgram/array-vs-concat.js
index 2a82ea48c754ed..1f07a504239d10 100644
--- a/benchmark/dgram/array-vs-concat.js
+++ b/benchmark/dgram/array-vs-concat.js
@@ -67,6 +67,7 @@ function server() {
       var bytes = sent * len;
       var gbits = (bytes * 8) / (1024 * 1024 * 1024);
       bench.end(gbits);
+      process.exit(0);
     }, dur * 1000);
   });
 
diff --git a/benchmark/dgram/multi-buffer.js b/benchmark/dgram/multi-buffer.js
index e7292feb1f958c..85e9561de8c07b 100644
--- a/benchmark/dgram/multi-buffer.js
+++ b/benchmark/dgram/multi-buffer.js
@@ -58,6 +58,7 @@ function server() {
       var bytes = (type === 'send' ? sent : received) * len;
       var gbits = (bytes * 8) / (1024 * 1024 * 1024);
       bench.end(gbits);
+      process.exit(0);
     }, dur * 1000);
   });
 
diff --git a/benchmark/dgram/offset-length.js b/benchmark/dgram/offset-length.js
index 15d9a3d0ee9949..ce9f4b025adfcf 100644
--- a/benchmark/dgram/offset-length.js
+++ b/benchmark/dgram/offset-length.js
@@ -50,6 +50,7 @@ function server() {
       var bytes = (type === 'send' ? sent : received) * chunk.length;
       var gbits = (bytes * 8) / (1024 * 1024 * 1024);
       bench.end(gbits);
+      process.exit(0);
     }, dur * 1000);
   });
 
diff --git a/benchmark/dgram/single-buffer.js b/benchmark/dgram/single-buffer.js
index 2676e0e74cfd8b..4793f65eeabeff 100644
--- a/benchmark/dgram/single-buffer.js
+++ b/benchmark/dgram/single-buffer.js
@@ -50,6 +50,7 @@ function server() {
       var bytes = (type === 'send' ? sent : received) * chunk.length;
       var gbits = (bytes * 8) / (1024 * 1024 * 1024);
       bench.end(gbits);
+      process.exit(0);
     }, dur * 1000);
   });
 
diff --git a/benchmark/fs/readfile.js b/benchmark/fs/readfile.js
index cdb36d065f1c8f..f58550fae83f96 100644
--- a/benchmark/fs/readfile.js
+++ b/benchmark/fs/readfile.js
@@ -26,6 +26,7 @@ function main(conf) {
   setTimeout(function() {
     bench.end(reads);
     try { fs.unlinkSync(filename); } catch (e) {}
+    process.exit(0);
   }, +conf.dur * 1000);
 
   function read() {
diff --git a/benchmark/http/_chunky_http_client.js b/benchmark/http/_chunky_http_client.js
index bde4eed7444e6f..d4d60ac84d1796 100644
--- a/benchmark/http/_chunky_http_client.js
+++ b/benchmark/http/_chunky_http_client.js
@@ -81,6 +81,7 @@ function main(conf) {
         count += 1;
         if (count === num) {
           bench.end(count);
+          process.exit(0);
         } else {
           WriteHTTPHeaders(socket, 1, min + size);
         }
diff --git a/benchmark/http/client-request-body.js b/benchmark/http/client-request-body.js
index 8d7fae44c1ebf6..f6b5ab19190538 100644
--- a/benchmark/http/client-request-body.js
+++ b/benchmark/http/client-request-body.js
@@ -65,5 +65,6 @@ function main(conf) {
 
   function done() {
     bench.end(nreqs);
+    process.exit(0);
   }
 }
diff --git a/benchmark/net/net-c2s-cork.js b/benchmark/net/net-c2s-cork.js
index 5e8dd349d68979..6af91620252f45 100644
--- a/benchmark/net/net-c2s-cork.js
+++ b/benchmark/net/net-c2s-cork.js
@@ -84,6 +84,7 @@ function server() {
         var bytes = writer.received;
         var gbits = (bytes * 8) / (1024 * 1024 * 1024);
         bench.end(gbits);
+        process.exit(0);
       }, dur * 1000);
 
       function send() {
diff --git a/benchmark/net/net-c2s.js b/benchmark/net/net-c2s.js
index 2c3bbe3c6a18cd..9b4df2f5a79fe7 100644
--- a/benchmark/net/net-c2s.js
+++ b/benchmark/net/net-c2s.js
@@ -106,6 +106,7 @@ function server() {
         var bytes = writer.received;
         var gbits = (bytes * 8) / (1024 * 1024 * 1024);
         bench.end(gbits);
+        process.exit(0);
       }, dur * 1000);
     });
   });
diff --git a/benchmark/net/net-pipe.js b/benchmark/net/net-pipe.js
index fd3a6d4f4334b8..03db348878ede0 100644
--- a/benchmark/net/net-pipe.js
+++ b/benchmark/net/net-pipe.js
@@ -109,6 +109,7 @@ function server() {
         var bytes = writer.received * 2;
         var gbits = (bytes * 8) / (1024 * 1024 * 1024);
         bench.end(gbits);
+        process.exit(0);
       }, dur * 1000);
     });
   });
diff --git a/benchmark/net/net-s2c.js b/benchmark/net/net-s2c.js
index fc3f3e13894d3c..469b66a25a3ee4 100644
--- a/benchmark/net/net-s2c.js
+++ b/benchmark/net/net-s2c.js
@@ -106,6 +106,7 @@ function server() {
         var bytes = writer.received;
         var gbits = (bytes * 8) / (1024 * 1024 * 1024);
         bench.end(gbits);
+        process.exit(0);
       }, dur * 1000);
     });
   });
diff --git a/benchmark/net/tcp-raw-c2s.js b/benchmark/net/tcp-raw-c2s.js
index e9dd7ca662009c..c33c6d0f2abf85 100644
--- a/benchmark/net/tcp-raw-c2s.js
+++ b/benchmark/net/tcp-raw-c2s.js
@@ -56,6 +56,7 @@ function server() {
     setTimeout(function() {
       // report in Gb/sec
       bench.end((bytes * 8) / (1024 * 1024 * 1024));
+      process.exit(0);
     }, dur * 1000);
 
     clientHandle.onread = function(nread, buffer) {
diff --git a/benchmark/net/tcp-raw-pipe.js b/benchmark/net/tcp-raw-pipe.js
index fb8da5ea41faf3..b7c6776c9578cd 100644
--- a/benchmark/net/tcp-raw-pipe.js
+++ b/benchmark/net/tcp-raw-pipe.js
@@ -116,6 +116,7 @@ function client() {
       // multiply by 2 since we're sending it first one way
       // then then back again.
       bench.end(2 * (bytes * 8) / (1024 * 1024 * 1024));
+      process.exit(0);
     }, dur * 1000);
 
     while (clientHandle.writeQueueSize === 0)
diff --git a/benchmark/net/tcp-raw-s2c.js b/benchmark/net/tcp-raw-s2c.js
index a7ef40db83ac13..a7eeed1921150e 100644
--- a/benchmark/net/tcp-raw-s2c.js
+++ b/benchmark/net/tcp-raw-s2c.js
@@ -135,6 +135,7 @@ function client() {
     setTimeout(function() {
       // report in Gb/sec
       bench.end((bytes * 8) / (1024 * 1024 * 1024));
+      process.exit(0);
     }, dur * 1000);
   };
 }
diff --git a/benchmark/tls/tls-connect.js b/benchmark/tls/tls-connect.js
index a265989e04db24..6ed4253f97fca8 100644
--- a/benchmark/tls/tls-connect.js
+++ b/benchmark/tls/tls-connect.js
@@ -61,4 +61,5 @@ function done() {
   // don't always match.  Generally, serverConn will be
   // the smaller number, but take the min just to be sure.
   bench.end(Math.min(serverConn, clientConn));
+  process.exit(0);
 }