~> siege -c 5 -b -t30s http://drupal6/
** SIEGE 2.67
** Preparing 5 concurrent users for battle.
The server is now under siege...
Lifting the server siege...      done.
Transactions:		        1620 hits
Availability:		      100.00 %
Elapsed time:		       29.44 secs
Data transferred:	        2.51 MB
Response time:		        0.09 secs
Transaction rate:	       55.03 trans/sec
Throughput:		        0.09 MB/sec
Concurrency:		        4.99
Successful transactions:        1620
Failed transactions:	           0
Longest transaction:	        1.76
Shortest transaction:	        0.01