I am using an Ubuntu 20.04 server, but it starts up with 50% CPU use without any process running. I tried many ways such as rebooting and upgrading OS, including this, but in vain. can anyone help me find why this happens and resolve this please?
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try pressing (capital!) `K` to show the kernel threads. Your system is probably doing something like synchronizing a raid array in the background. – Marcus Müller Aug 23 '23 at 12:40
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Let us [continue this discussion in chat](https://chat.stackexchange.com/rooms/148036/discussion-between-giacomo-catenazzi-and-marcus-muller). – Giacomo Catenazzi Aug 23 '23 at 13:06
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Is it half of the cores, or is it the half-cores (not the full-cores, or ⅔-cores). – ctrl-alt-delor Aug 23 '23 at 14:47
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sorry for my poor languages, it is 50% us in top command and 16 out of 32 cores are 100% (see in the picture i posted). – holder fo Aug 24 '23 at 02:16
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FYI, i am new to Ubuntu and this, so sorry i have no reputation to continue this in chat. i am hoping a simple way to resolve this. – holder fo Aug 24 '23 at 02:24