add bench_sendall.py. Original patch by Ralf Schmitt.

greentest/bench_sendall.py

+#! /usr/bin/env python
+import time
+from gevent import server, socket
+
+
+class MyServer(server.StreamServer):
+
+    def handle(self, socket, addr):
+        while True:
+            d = socket.recv(4096)
+            if not d:
+                break
+
+
+def main():
+    server = MyServer(("127.0.0.1", 0))
+    server.start()
+
+    length = 50*0x100000
+    data = "x" * (50*0x100000)
+    
+    spent_total = 0
+    N = 10
+
+    conn = socket.create_connection((server.server_host, server.server_port))
+    for i in range(N):
+        start = time.time()
+        conn.sendall(data)
+        spent = time.time() - start
+        print "%.2f MB/s" % (length / spent / 0x100000)
+        spent_total += spent
+
+    print "== %.2f MB/s" % (length * N / spent_total / 0x100000)
+
+if __name__=="__main__":
+    main()
+