[嵌入式linux] RK3399 Android7.1 CPU发热严重
<div align="left"><strong style="overflow-wrap:break-word; word-break:break-all">描述</strong></div><p>你好，我们现在采用RK3399+RK818的架构，现在发现正常待机下CPU很烫，请问软件可以从哪些方面去降低温度？<br style="overflow-wrap:break-word; word-break:break-all" />
现在发现开机后CPU主频一直保存1.8GHZ，电压为1.17V，这可能是发热的根本原因，请问为什么CPU跑的这么高，应该如何排查分析<br style="overflow-wrap:break-word; word-break:break-all" />
<ignore_js_op style="overflow-wrap:break-word; word-break:break-all"></ignore_js_op><br style="overflow-wrap:break-word; word-break:break-all" />
<br style="overflow-wrap:break-word; word-break:break-all" />
版型：<br style="overflow-wrap:break-word; word-break:break-all" />
<ignore_js_op style="overflow-wrap:break-word; word-break:break-all"></ignore_js_op><br style="overflow-wrap:break-word; word-break:break-all" />
<br style="overflow-wrap:break-word; word-break:break-all" />
厂家回复：<br style="overflow-wrap:break-word; word-break:break-all" />
你们自己是否改过相关调频策略？默认的CPU调频策略是interactive,会依据CPU负载自动调整CPU频率，负载低时运行低频，高负载时运行高频。<br style="overflow-wrap:break-word; word-break:break-all" />
请使用busybox 去查看以下信息：<br style="overflow-wrap:break-word; word-break:break-all" />
busybox top 看下后台进程，是否有进程一直消耗CPU资源。<br style="overflow-wrap:break-word; word-break:break-all" />
busybox cat /d/opp/opp_summary 频率电压配置情况<br style="overflow-wrap:break-word; word-break:break-all" />
busybox cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor<br style="overflow-wrap:break-word; word-break:break-all" />
busybox cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq<br style="overflow-wrap:break-word; word-break:break-all" />
busybox cat /sys/devices/system/cpu/cpu4/cpufreq/scaling_governor<br style="overflow-wrap:break-word; word-break:break-all" />
busybox cat /sys/devices/system/cpu/cpu4/cpufreq/scaling_cur_freq<br style="overflow-wrap:break-word; word-break:break-all" />
<br style="overflow-wrap:break-word; word-break:break-all" />
<br style="overflow-wrap:break-word; word-break:break-all" />
工程师回复：<br style="overflow-wrap:break-word; word-break:break-all" />
<ignore_js_op style="overflow-wrap:break-word; word-break:break-all"></ignore_js_op><br style="overflow-wrap:break-word; word-break:break-all" />
<ignore_js_op style="overflow-wrap:break-word; word-break:break-all"></ignore_js_op><br style="overflow-wrap:break-word; word-break:break-all" />
<br style="overflow-wrap:break-word; word-break:break-all" />
<br style="overflow-wrap:break-word; word-break:break-all" />
厂家回复：<br style="overflow-wrap:break-word; word-break:break-all" />
很明显rild进程CPU占用很高,负载较重，导致CPU运行高频。去除4G验证<br style="overflow-wrap:break-word; word-break:break-all" />
<br style="overflow-wrap:break-word; word-break:break-all" />
<br style="overflow-wrap:break-word; word-break:break-all" />
取消4G之后结果明显改善<br style="overflow-wrap:break-word; word-break:break-all" />
<ignore_js_op style="overflow-wrap:break-word; word-break:break-all"></ignore_js_op></p>
能沟通发现问题，解决问题，楼主费心了，谢谢分享！
页:
[1]