Reponse times for a Drupal Commons site with some extra modules using different APC settings.

Scenarios tested:

1. apc.shm_size = 128M (fits the whole site)
2. apc.shm_size = 48M (does not fit the whole site)
3. apc.shm_size = 48M and apc.ttl = 0 (different behavior when cache is full)
4. apc.enabled = Off

## $`128`
##    Min. 1st Qu.  Median    Mean 3rd Qu.    Max. 
##     403     811     949    1050    1220    5040 
## 
## $`48`
##    Min. 1st Qu.  Median    Mean 3rd Qu.    Max. 
##     567    1230    1410    1500    1710   54400 
## 
## $`48.ttl0`
##    Min. 1st Qu.  Median    Mean 3rd Qu.    Max. 
##    1070    2760    3070    3110    3450    5680 
## 
## $off
##    Min. 1st Qu.  Median    Mean 3rd Qu.    Max. 
##     926    2200    2480    2550    2820   57800