CPU2(pipe) CPU3(pipe) 100 100 sys 80 70 60 30 20 2 A 70 0 time/s time/s (a)CPU2 (b)CPU3 CPU1(pipe】 CPUO(pipe) % 8 0 sys 40 20 20 30 0 70 <0 40 50 10 time/s time/s (c)CPUI (d)CPUO cantext switches(cs)(pipe) runnable tasks number 450d +cs/s 40 30c 150 100 run task num(pipe) run task numfshell8 40 20 40 70 time/s time/s (e)Number of context switches per second (f)Number of current runnable tasks Figure 2.Performance metrics records with F5 in pipe workload of UnixBench(a) CPU2 (b) CPU3 (c) CPU1 (d) CPU0 (e) Number of context switches per second (f) Number of current runnable tasks Figure 2. Performance metrics records with F5 in pipe workload of UnixBench