difference between no caching and MY caching ;)

gistfile1.txt

fbettag@home .oO(~) $ siege -b http://172.16.1.5:8080/
** SIEGE 2.70
** Preparing 25 concurrent users for battle.
The server is now under siege...^C
Lifting the server siege...      done.
Transactions:		         977 hits
Availability:		      100.00 %
Elapsed time:		       11.40 secs
Data transferred:	        2.97 MB
Response time:		        0.29 secs
Transaction rate:	       85.70 trans/sec
Throughput:		        0.26 MB/sec
Concurrency:		       24.76
Successful transactions:         977
Failed transactions:	           0
Longest transaction:	        1.36
Shortest transaction:	        0.06
 
[error] unable to create log file: No such file or directory
fbettag@home .oO(~) $ siege -b http://172.16.1.5:8080/development
** SIEGE 2.70
** Preparing 25 concurrent users for battle.
The server is now under siege..      done.
Transactions:		        5000 hits
Availability:		      100.00 %
Elapsed time:		        3.80 secs
Data transferred:	       24.58 MB
Response time:		        0.02 secs
Transaction rate:	     1315.79 trans/sec
Throughput:		        6.47 MB/sec
Concurrency:		       24.70
Successful transactions:        5000
Failed transactions:	           0
Longest transaction:	        0.15
Shortest transaction:	        0.00
 
[error] unable to create log file: No such file or directory