系统：CentOS 7.4
工具：sysbench 1.0.17
查看测试CPU命令参数：
# sysbench cpu help sysbench 1.0.17 (using system LuaJIT 2.0.4) cpu options: --cpu-max-prime=N upper limit for primes generator [10000]
对主机CPU进行性能测试：
# sysbench --threads=20 --events=100 cpu --debug --cpu-max-prime=100000000 run sysbench 1.0.17 (using system LuaJIT 2.0.4) Running the test with following options: Number of threads: 20 Debug mode enabled. Initializing random number generator from current time Doing CPU performance benchmark Prime numbers limit: 100000000 Initializing worker threads... DEBUG: Worker thread (#0) started DEBUG: Worker thread (#0) initialized DEBUG: Worker thread (#2) started DEBUG: Worker thread (#2) initialized DEBUG: Worker thread (#1) started DEBUG: Worker thread (#1) initialized DEBUG: Worker thread (#3) started DEBUG: Worker thread (#5) started DEBUG: Worker thread (#5) initialized DEBUG: Worker thread (#4) started DEBUG: Worker thread (#8) started DEBUG: Worker thread (#8) initialized DEBUG: Worker thread (#9) started DEBUG: Worker thread (#9) initialized DEBUG: Worker thread (#10) started DEBUG: Worker thread (#10) initialized DEBUG: Worker thread (#11) started DEBUG: Worker thread (#11) initialized DEBUG: Worker thread (#4) initialized DEBUG: Worker thread (#13) started DEBUG: Worker thread (#3) initialized DEBUG: Worker thread (#7) started DEBUG: Worker thread (#7) initialized DEBUG: Worker thread (#16) started DEBUG: Worker thread (#12) started DEBUG: Worker thread (#14) started DEBUG: Worker thread (#19) started DEBUG: Worker thread (#19) initialized DEBUG: Worker thread (#15) started DEBUG: Worker thread (#16) initialized DEBUG: Worker thread (#13) initialized DEBUG: Worker thread (#17) started DEBUG: Worker thread (#17) initialized DEBUG: Worker thread (#12) initialized DEBUG: Worker thread (#14) initialized DEBUG: Worker thread (#6) started DEBUG: Worker thread (#6) initialized DEBUG: Worker thread (#18) started DEBUG: Worker thread (#18) initialized DEBUG: Worker thread (#15) initialized Threads started! Time limit exceeded, exiting... (last message repeated 19 times) Done. CPU speed: events per second: 0.04 General statistics: total time: 566.3779s total number of events: 20 Latency (ms): min: 564100.65 avg: 565377.03 max: 566377.69 95th percentile: 100000.00 sum: 11307540.52 Threads fairness: events (avg/stddev): 1.0000/0.00 execution time (avg/stddev): 565.3770/0.47 DEBUG: Verbose per-thread statistics: DEBUG: thread # 0: min: 565.8100s avg: 565.8100s max: 565.8100s events: 1 DEBUG: total time taken by event execution: 565.8100s DEBUG: thread # 1: min: 565.3820s avg: 565.3820s max: 565.3820s events: 1 DEBUG: total time taken by event execution: 565.3820s DEBUG: thread # 2: min: 564.1007s avg: 564.1007s max: 564.1007s events: 1 DEBUG: total time taken by event execution: 564.1007s DEBUG: thread # 3: min: 565.4046s avg: 565.4046s max: 565.4046s events: 1 DEBUG: total time taken by event execution: 565.4046s DEBUG: thread # 4: min: 565.0699s avg: 565.0699s max: 565.0699s events: 1 DEBUG: total time taken by event execution: 565.0699s DEBUG: thread # 5: min: 565.0227s avg: 565.0227s max: 565.0227s events: 1 DEBUG: total time taken by event execution: 565.0227s DEBUG: thread # 6: min: 565.4844s avg: 565.4844s max: 565.4844s events: 1 DEBUG: total time taken by event execution: 565.4844s DEBUG: thread # 7: min: 564.8001s avg: 564.8001s max: 564.8001s events: 1 DEBUG: total time taken by event execution: 564.8001s DEBUG: thread # 8: min: 566.3777s avg: 566.3777s max: 566.3777s events: 1 DEBUG: total time taken by event execution: 566.3777s DEBUG: thread # 9: min: 565.8327s avg: 565.8327s max: 565.8327s events: 1 DEBUG: total time taken by event execution: 565.8327s DEBUG: thread # 10: min: 565.8196s avg: 565.8196s max: 565.8196s events: 1 DEBUG: total time taken by event execution: 565.8196s DEBUG: thread # 11: min: 565.2323s avg: 565.2323s max: 565.2323s events: 1 DEBUG: total time taken by event execution: 565.2323s DEBUG: thread # 12: min: 565.7086s avg: 565.7086s max: 565.7086s events: 1 DEBUG: total time taken by event execution: 565.7086s DEBUG: thread # 13: min: 565.3251s avg: 565.3251s max: 565.3251s events: 1 DEBUG: total time taken by event execution: 565.3251s DEBUG: thread # 14: min: 564.8915s avg: 564.8915s max: 564.8915s events: 1 DEBUG: total time taken by event execution: 564.8915s DEBUG: thread # 15: min: 565.2258s avg: 565.2258s max: 565.2258s events: 1 DEBUG: total time taken by event execution: 565.2258s DEBUG: thread # 16: min: 565.6793s avg: 565.6793s max: 565.6793s events: 1 DEBUG: total time taken by event execution: 565.6793s DEBUG: thread # 17: min: 565.5312s avg: 565.5312s max: 565.5312s events: 1 DEBUG: total time taken by event execution: 565.5312s DEBUG: thread # 18: min: 565.2798s avg: 565.2798s max: 565.2798s events: 1 DEBUG: total time taken by event execution: 565.2798s DEBUG: thread # 19: min: 565.5625s avg: 565.5625s max: 565.5625s events: 1 DEBUG: total time taken by event execution: 565.5625s
查看CPU使用率监控图像：
由于主机配置较高（20核），CPU使用率没有打高
