HotCat

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你这个CPU是移动版的,频率太低,而且CPU频率会根据负载来回波动。可以试试下面的方法。进入BIOS,把这几个选项Disable了:Intel Speedstep : Disabled,CPU C States support : Disabled,所有关于节能的选项都关闭,关闭超线程。然后进入windows查看CPU频率是不是稳定到了2.8Mhz或者3.0Mhz

如果用的是工控板,进入BIOS,把这几个选项Disable了:Intel Speedstep : Disabled,CPU C States support : Disabled。如果是在Linux下运行,可以修改内核启动参数,加上intel_idle.max_cstate=0 processor.max_cstate=0 idle=poll pstate=disable,这些修改最终的作用就是让CPU以稳定的频率运行,而不是根据负载来回波动

wly2020-robot: 你还需要把EIST关闭掉,这个就是我提到的Enhanced Intel Speed Step变频技术,另外还有一个超频的也要关闭,超线程也要关闭。我传的图,把超线程标错了,去找到Intel HT(HyperThread) Technology这样的选项,关闭了试试。还有就是这种工控机是不是无风扇设计?要加强散热,不然温度上去了,操作系统也会开始降频 ![115170780-0cac1280-a0f4-11eb-8574-427a2e5f53d1](https://user-images.githubusercontent.com/839119/115180093-5fdb9080-a107-11eb-993d-dab1519706e9.jpg)

> 你好,HotCat! 我按照你说的进行优化,没有效果,算法运行耗时波动还更大。附件是blos设置和CPU-Z核心运行速率小视频: > ![2579e419010160d4b01604a9ea43c9b](https://user-images.githubusercontent.com/74177007/115191765-7809da80-a11c-11eb-97da-00abfeec52e3.jpg) > > 5752f0830beaa69184c72e12bc93b141.mp4 可能还得用windows下的软件把这个EIST关闭,BIOS关闭可能没用,windows可能自动又打开了。我去年也用过这种淘宝工控机跑LinuxCNC,原先默认频率1.6G的,通过这么设置可以稳定到2.6G;原先默认频率1.9G的,最后都可以稳定到3.0G

I successfully build 0.0.2.1 from source on MinGW with stack's buildin MinGW environment during the building process, I encounted 'undefined symbol __ZdlPvm' while building OpenCV/Core/Types/Rect. It was caused by Template...

additional comment, I recommended to build opencv from source on MinGW. I download opencv-3.4.2 from github, use stack to create an new project, specific lts-13.25 or any other lts equal...

I also successfully build under lts-18.28 on win10, I can not help to share some tips, I use stack doing the whole jobs 1. repa could be the problem, you...