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Giovanni Giampaolo
Asked: 2018-05-25 01:31:20 +0800 CST

High temperatures and CPU almost always 100%

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For about two weeks I have noticed that the temperatures of my cores have increased and are now stable at 70-86 degrees, which is not normal. The fan is always on 3200/3600 rpm and the processor and ram are almost always at maximum. I have not installed anything or done other operations that could have caused this. Could it only be dust in my notebook? Thank you in advance for the help

This is the result of atop into terminal

enter image description here

fan cpu overheating temperature ram

1 Answers

  1. Your system is short of RAM and is relying on virtual memory. Either run fewer apps or do something to increase the amount of RAM like buying more RAM for your computer or getting a bigger computer.

    I know this because atop is showing high swout. Paging out is bad, paging in is usually harmless by comparison. The scanning rate is also high, the system scans for pages to scavenge when it is short of free RAM.

    My experience hearkens back when the BSD vmstat had an sr column (and Sun copied this feature into the SysVR4 Solaris). The sr was "scanning rate" (for LRU pages). It was the most critical column to pay attention to as it would only go high when the system was starving for memeory. Linux didn't get it at first, their vmstat never had an sr but things are starting to get back there, the dstat --adv-mem feature was recently added and it looks at scanning rate. Linux proper (the kernel, that is) has scanning instrumentation, see grep -i scan /proc/vmstat.

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