Le 27/08/2020 à 11:50, Carlos E. R. a écrit :
To me, this indicates a kernel problem or bug somewhere. The kernel should be able to automatically slow down the CPU when it overheats, keeping the machine fully responsive and within temp margins.
it does, but keep the cpu around 95°C, wich I found too hot (max is 100°C) best is a way to drive the cpu according to temperature. There *is* one such thing, as the dmesg indication [ 3405.173680] CPU2: Package temperature/speed normal [ 3705.166653] CPU3: Package temperature above threshold, cpu clock throttled (total events = 437386) [ 3705.166655] CPU7: Package temperature above threshold, cpu clock throttled (total events = 437386)
And certainly, you can slow down the processor manually.
I will look at this, but cpupower seems to be the prefered tool https://doc.opensuse.org/documentation/leap/tuning/single-html/book-sle-tuni... (to test:)
For example, I do:
Isengard:~ # systemctl edit rsyncd.service
[Service] CPUQuota=85%
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And that is it, that process (that service) runs slower.
I use this other tool on scripts or commands called manually:
Isengard:~ # rpm -qi cpulimit Name : cpulimit Version : 2.5 Release : lp151.2.3 Architecture: x86_64 Install Date: Sat Oct 26 14:37:19 2019
URL : http://limitcpu.sourceforge.net/ Summary : Limit the CPU Usage of a Process Description : LimitCPU is a program to throttle the CPU cycles used by other applications. LimitCPU will monitor a process and make sure its CPU usage stays at or below a given percentage. This can be used to make sure your system has plenty of CPU cycles available for other tasks. It can also be used to keep laptops cool in the face of CPU-hungry processes and for limiting virtual machines.
LimitCPU is the direct child of CPUlimit, a creation of Angelo Marletta, which can be found at http://cpulimit.sourceforge.net Distribution: openSUSE Leap 15.1 Isengard:~ #
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