Df Sum Sq Mean Sq   F value    Pr(>F)    
comm.strat             3   5.70    1.90    3.9805  0.007833 ** 
migr.freq              1 174.83  174.83  366.0709 < 2.2e-16 ***
max.cpu                1  78.96   78.96  165.3294 < 2.2e-16 ***
instance               1 700.32  700.32 1466.3869 < 2.2e-16 ***
comm.strat:migr.freq   3   1.23    0.41    0.8581  0.462393    
comm.strat:max.cpu     3   0.83    0.28    0.5814  0.627312    
comm.strat:instance    3   2.29    0.76    1.6013  0.187504    
migr.freq:max.cpu      1  11.66   11.66   24.4176 9.177e-07 ***
migr.freq:instance     1  14.89   14.89   31.1744 3.086e-08 ***
max.cpu:instance       1   0.74    0.74    1.5500  0.213443    
Residuals            941 449.40    0.48                        
---
Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1