Df Sum Sq Mean Sq  F value    Pr(>F)    
comm.strat              3  35.30   11.77  40.2629 < 2.2e-16 ***
migr.freq               1  23.73   23.73  81.1976 < 2.2e-16 ***
max.cpu                 1  16.38   16.38  56.0563 1.233e-13 ***
instance                2 260.83  130.41 446.2361 < 2.2e-16 ***
comm.strat:migr.freq    3   9.67    3.22  11.0261 3.710e-07 ***
comm.strat:max.cpu      3   1.02    0.34   1.1634  0.322439    
comm.strat:instance     6   5.90    0.98   3.3663  0.002677 ** 
migr.freq:max.cpu       1   0.02    0.02   0.0637  0.800808    
migr.freq:instance      2   3.55    1.78   6.0753  0.002359 ** 
max.cpu:instance        2   2.95    1.48   5.0548  0.006494 ** 
Residuals            1415 413.54    0.29                       
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Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1