CPU utility is too high
400%cpu 121%user 10%nice 81%sys 183%idle 0%iow 4%irq 2%sirq 0%host
PID USER PR NI VIRT RES SHR S[%CPU] %MEM TIME+ ARGS
4680 shell 20 0 11M 2.0M 1.5M S 100 0.0 7:02.65 demo
32676 u0_a189 20 0 1.6G 170M 59M S 83.3 4.5 23:32.87 cn.alios.voiceservice
5177 u0_a182 16 -4 2.1G 149M 73M S 8.6 3.9 0:08.36 com.xunmeng.pinduoduo
1629 u0_a90 20 0 4.8G 68M 43M S 3.6 1.7 2:30.81 com.ustwo.lwp
4748 shell 20 0 35M 3.0M 1.7M R 3.0 0.0 0:11.06 top
506 system -2 -8 288M 12M 8.1M S 2.0 0.3 10:31.96 surfaceflinger
5101 root 20 0 0 0 0 S 1.3 0.0 0:00.62 [kworker/u8:5]
929 system 18 -2 8.0G 322M 247M S 1.3 8.5 5:21.26 system_server
525 root RT 0 0 0 0 D 1.3 0.0 2:33.75 [mdss_fb0]
26043 root 20 0 0 0 0 S 1.0 0.0 0:05.91 [kworker/0:5]
672 system RT 0 2.0G 3.9M 2.5M S 1.0 0.1 0:43.33 [email protected]
25136 root 20 0 0 0 0 S 0.6 0.0 0:43.88 [kworker/u8:8]
770 shell 20 0 148M 4.0M 2.3M S 0.6 0.1 0:36.47 adbd --root_seclabel=u:r:su:s0
508 system -3 -8 151M 4.2M 3.2M S 0.6 0.1 2:43.89 [email protected]
354 root RT 0 0 0 0 S 0.6 0.0 0:29.94 [nanohub]
276 root RT 0 0 0 0 S 0.6 0.0 0:11.26 [spi6]
4638 root 20 0 0 0 0 S 0.3 0.0 0:02.91 [kworker/0:1]
4327 root 20 0 0 0 0 S 0.3 0.0 0:03.61 [kworker/0:0]
2013 u0_a182 20 0 1.8G 71M 45M S 0.3 1.8 0:03.88 com.xunmeng.pinduoduo:titan
1872 root 20 0 0 0 0 S 0.3 0.0 0:12.90 [kworker/u8:2]
26054 shell 20 0 33M 1.9M 1.3M S 0.3 0.0 0:02.75 logcat -v long -v epoch
2896 u0_a176 20 0 6.7G 132M 68M S 0.3 3.5 0:41.87 com.tencent.mm
1990 root 18 -2 0 0 0 S 0.3 0.0 0:14.61 [VosMCThread]
1784 radio 20 0 5.3G 68M 34M S 0.3 1.8 0:09.42 com.android.phone
hi. i test the demo.the CPU utility is too high,what can do for reducing it?