here's an intersting set of numbers.. notice the increase in 'system time' for the same work done when there is more parallelism. make buildworld 3762.94 real 2627.66 user 1275.78 sys 3763.32 real 2632.04 user 1271.80 sys 3763.34 real 2627.99 user 1276.39 sys 3763.03 real 2632.50 user 1270.91 sys make -j 2 buildworld 2465.10 real 2958.94 user 1918.64 sys 2463.97 real 2968.43 user 1910.65 sys 2472.13 real 2978.64 user 1912.80 sys 2582.83 real 2965.51 user 2047.19 sys make -j 4 buildworld 2262.88 real 4322.31 user 3333.58 sys 2255.88 real 4330.32 user 3319.48 sys 2256.09 real 4318.84 user 3336.57 sys 2257.63 real 4338.34 user 3313.07 sys (2 processors with HTT) (looks like 4 processors) -current, sched_4bsd I'm guessing that the extra system time represents a lot of contention somewhere. What is the best way to get actual numbers on this?Received on Thu Feb 01 2007 - 18:36:24 UTC
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