add script that runs a cpu benchmark of downloading

examples/Jamfile

@@ -26,3 +26,6 @@ exe fragmentation_test : fragmentation_test.cpp ;
 exe rss_reader : rss_reader.cpp ;
 exe upnp_test : upnp_test.cpp ;
 
+install stage_client_test : client_test : <location>. ;
+install stage_connection_tester : connection_tester : <location>. ;
+

tools/run_benchmark.py

@@ -0,0 +1,64 @@
+import os
+import time
+import shutil
+import subprocess
+import sys
+
+port = (int(time.time()) % 50000) + 2000
+
+toolset = ''
+if len(sys.argv) > 1:
+	toolset = sys.argv[1]
+
+ret = os.system('cd ../examples && bjam boost=source profile statistics=on -j3 %s stage_client_test' % toolset)
+ret = os.system('cd ../examples && bjam boost=source release -j3 %s stage_connection_tester' % toolset)
+
+if ret != 0:
+	print 'ERROR: build failed: %d' % ret
+	sys.exit(1)
+
+if not os.path.exists('cpu_benchmark.torrent'):
+	ret = os.system('../examples/connection_tester gen-torrent -s 10000 -n 15 -t cpu_benchmark.torrent')
+	if ret != 0:
+		print 'ERROR: connection_tester failed: %d' % ret
+		sys.exit(1)
+
+try: shutil.rmtree('torrent_storage')
+except: pass
+
+try: shutil.rmtree('session_stats')
+except: pass
+
+try: os.mkdir('logs')
+except: pass
+
+start = time.time();
+client_cmd = '../examples/client_test -p %d cpu_benchmark.torrent -k -0 -z -H -X -q 120' % port
+test_cmd = '../examples/connection_tester upload -c 50 -d 127.0.0.1 -p %d -t cpu_benchmark.torrent' % port
+
+client_out = open('logs/client.out', 'w+')
+test_out = open('logs/test.out', 'w+')
+print client_cmd
+c = subprocess.Popen(client_cmd.split(' '), stdout=client_out, stderr=client_out, stdin=subprocess.PIPE)
+time.sleep(2)
+print test_cmd
+t = subprocess.Popen(test_cmd.split(' '), stdout=test_out, stderr=test_out)
+
+t.wait()
+c.communicate('q')
+c.wait()
+
+end = time.time();
+
+print 'runtime %d seconds' % (end - start)
+print 'analyzing proile...'
+os.system('gprof ../examples/client_test >logs/gprof.out')
+print 'generating profile graph...'
+os.system('python gprof2dot.py <logs/gprof.out | dot -Tpng -o logs/cpu_profile.png')
+
+os.system('python parse_session_stats.py session_stats/*.log')
+try: os.rename('session_stats_report', 'logs/session_stats_report')
+except: pass
+try: os.rename('session_stats', 'logs/session_stats')
+except: pass
+