Before
~> siege -b -t30s -c5 http://wp1.localhost
** SIEGE 2.68
** Preparing 5 concurrent users for battle.
The server is now under siege...
Lifting the server siege...      done.
Transactions:		         788 hits
Availability:		      100.00 %
Elapsed time:		       29.27 secs
Data transferred:	        1.66 MB
Response time:		        0.18 secs
Transaction rate:	       26.92 trans/sec
Throughput:		        0.06 MB/sec
Concurrency:		        4.97
Successful transactions:         788
Failed transactions:	           0
Longest transaction:	        0.65
Shortest transaction:	        0.07
After
~> siege -b -t30s -c5 http://wp2.localhost
** SIEGE 2.68
** Preparing 5 concurrent users for battle.
The server is now under siege...
Lifting the server siege...      done.
Transactions:		         851 hits
Availability:		      100.00 %
Elapsed time:		       29.55 secs
Data transferred:	        1.80 MB
Response time:		        0.17 secs
Transaction rate:	       28.80 trans/sec
Throughput:		        0.06 MB/sec
Concurrency:		        4.97
Successful transactions:         851
Failed transactions:	           0
Longest transaction:	        0.52
Shortest transaction:	        0.06
Not super-impressive results. What else can we do to go faster without crippling the application?