diff --git a/README.md b/README.md
index b7f5b38..24bf52e 100644
--- a/README.md
+++ b/README.md
@@ -399,7 +399,7 @@ $streamingBrowser->get($url)->then(function (ResponseInterface $response) {
 });
 ```
 
-See also the [stream bandwidth example](examples/91-stream-bandwidth.php) and
+See also the [stream download example](examples/91-benchmark-download.php) and
 the [stream forwarding example](examples/21-stream-forwarding.php).
 
 You can invoke the following methods on the message body:
diff --git a/examples/91-stream-bandwidth.php b/examples/91-benchmark-download.php
similarity index 64%
rename from examples/91-stream-bandwidth.php
rename to examples/91-benchmark-download.php
index 779a314..5d75afc 100644
--- a/examples/91-stream-bandwidth.php
+++ b/examples/91-benchmark-download.php
@@ -1,14 +1,29 @@
 <?php
 
+// a) simple download benchmark against public HTTP endpoint:
+// $ php examples/91-benchmark-download.php http://httpbin.org/get
+
+// b) local 10 GB download benchmark against localhost address to avoid network overhead
+//
+// b1) first run example HTTP server, e.g. from react/http:
+// $ cd workspace/reactphp-http
+// $ php examples/99-benchmark-download.php 8080
+//
+// b2) run HTTP client receiving a 10 GB download:
+// $ php examples/92-benchmark-download.php http://localhost:8080/ 10000
+
 use Clue\React\Buzz\Browser;
 use Psr\Http\Message\ResponseInterface;
 use React\Stream\ReadableStreamInterface;
-use RingCentral\Psr7;
 
 $url = isset($argv[1]) ? $argv[1] : 'http://google.com/';
 
 require __DIR__ . '/../vendor/autoload.php';
 
+if (extension_loaded('xdebug')) {
+    echo 'NOTICE: The "xdebug" extension is loaded, this has a major impact on performance.' . PHP_EOL;
+}
+
 $loop = React\EventLoop\Factory::create();
 $client = new Browser($loop);
 
@@ -16,7 +31,7 @@
 
 $client->withOptions(array('streaming' => true))->get($url)->then(function (ResponseInterface $response) use ($loop) {
     echo 'Headers received' . PHP_EOL;
-    echo Psr7\str($response);
+    echo RingCentral\Psr7\str($response);
 
     $stream = $response->getBody();
     if (!$stream instanceof ReadableStreamInterface) {
@@ -41,7 +56,7 @@
 
         $time = microtime(true) - $time;
 
-        echo "\r" . 'Downloaded ' . $bytes . ' bytes in ' . round($time, 3) . 's => ' . round($bytes / $time / 1024 / 1024, 1) . ' MiB/s' . PHP_EOL;
+        echo "\r" . 'Downloaded ' . $bytes . ' bytes in ' . round($time, 3) . 's => ' . round($bytes / $time / 1000000, 1) . ' MB/s' . PHP_EOL;
     });
 }, 'printf');
 
diff --git a/examples/92-benchmark-upload.php b/examples/92-benchmark-upload.php
new file mode 100644
index 0000000..0bef763
--- /dev/null
+++ b/examples/92-benchmark-upload.php
@@ -0,0 +1,125 @@
+<?php
+
+// a) simple 1 MB upload benchmark against public HTTP endpoint
+// $ php examples/92-benchmark-upload.php http://httpbin.org/post 1
+//
+// b) local 10 GB upload benchmark against localhost address to avoid network overhead
+//
+// b1) first run example HTTP server, e.g. from react/http
+// $ cd workspace/reactphp-http
+// $ php examples/13-stream-request.php 8080
+//
+// b2) run HTTP client sending a 10 GB upload
+// $ php examples/92-benchmark-upload.php http://localhost:8080/ 10000
+
+use Clue\React\Buzz\Browser;
+use Evenement\EventEmitter;
+use Psr\Http\Message\ResponseInterface;
+use React\Stream\ReadableStreamInterface;
+use React\Stream\Util;
+use React\Stream\WritableStreamInterface;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+if (extension_loaded('xdebug')) {
+    echo 'NOTICE: The "xdebug" extension is loaded, this has a major impact on performance.' . PHP_EOL;
+}
+
+/** A readable stream that can emit a lot of data */
+class ChunkRepeater extends EventEmitter implements ReadableStreamInterface
+{
+    private $chunk;
+    private $count;
+    private $position = 0;
+    private $paused = true;
+    private $closed = false;
+
+    public function __construct($chunk, $count)
+    {
+        $this->chunk = $chunk;
+        $this->count = $count;
+    }
+
+    public function pause()
+    {
+        $this->paused = true;
+    }
+
+    public function resume()
+    {
+        if (!$this->paused || $this->closed) {
+            return;
+        }
+
+        // keep emitting until stream is paused
+        $this->paused = false;
+        while ($this->position < $this->count && !$this->paused) {
+            ++$this->position;
+            $this->emit('data', array($this->chunk));
+        }
+
+        // end once the last chunk has been written
+        if ($this->position >= $this->count) {
+            $this->emit('end');
+            $this->close();
+        }
+    }
+
+    public function pipe(WritableStreamInterface $dest, array $options = array())
+    {
+        return Util::pipe($this, $dest, $options);
+    }
+
+    public function isReadable()
+    {
+        return !$this->closed;
+    }
+
+    public function close()
+    {
+        if ($this->closed) {
+            return;
+        }
+
+        $this->closed = true;
+        $this->count = 0;
+        $this->paused = true;
+        $this->emit('close');
+    }
+
+    public function getPosition()
+    {
+        return $this->position * strlen($this->chunk);
+    }
+}
+
+$loop = React\EventLoop\Factory::create();
+$client = new Browser($loop);
+
+$url = isset($argv[1]) ? $argv[1] : 'http://httpbin.org/post';
+$n = isset($argv[2]) ? $argv[2] : 10;
+$source = new ChunkRepeater(str_repeat('x', 1000000), $n);
+$loop->futureTick(function () use ($source) {
+    $source->resume();
+});
+
+echo 'POSTing ' . $n . ' MB to ' . $url . PHP_EOL;
+
+$start = microtime(true);
+$report = $loop->addPeriodicTimer(0.05, function () use ($source, $start) {
+    printf("\r%d bytes in %0.3fs...", $source->getPosition(), microtime(true) - $start);
+});
+
+$client->post($url, array('Content-Length' => $n * 1000000), $source)->then(function (ResponseInterface $response) use ($source, $report, $loop, $start) {
+    $now = microtime(true);
+    $loop->cancelTimer($report);
+
+    printf("\r%d bytes in %0.3fs => %.1f MB/s\n", $source->getPosition(), $now - $start, $source->getPosition() / ($now - $start) / 1000000);
+
+    echo rtrim(preg_replace('/x{5,}/','x…', (string) $response->getBody()), PHP_EOL) . PHP_EOL;
+}, function ($e) use ($loop, $report) {
+    $loop->cancelTimer($report);
+    echo 'Error: ' . $e->getMessage() . PHP_EOL;
+});
+
+$loop->run();