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Date:      Mon, 26 Nov 2018 21:09:18 +0700
From:      Eugene Grosbein <eugen@grosbein.net>
To:        =?UTF-8?Q?Gerrit_K=c3=bchn?= <gerrit.kuehn@aei.mpg.de>, freebsd-stable@freebsd.org
Subject:   Re: high cpu irq load and slow boot after update from 10.4 to 11.2
Message-ID:  <f85f3556-3b73-df7c-2f3e-1a9bbef47777@grosbein.net>
In-Reply-To: <20181126141403.71ff15eb77e55b5e9ce4f79b@aei.mpg.de>
References:  <20181126094648.510fc7f7b773bfdac546d037@aei.mpg.de> <007b9007-6abb-15cf-45df-45b3da814e5d@grosbein.net> <20181126141403.71ff15eb77e55b5e9ce4f79b@aei.mpg.de>

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26.11.2018 20:14, Gerrit Kühn wrote:

> Which settings would be recommended to try? This is what I have now:
> 
> ---
> root@storage:~ # sysctl kern.timecounter.hardware
> kern.timecounter.hardware: TSC
> 
> root@storage:~ # sysctl kern.timecounter.choice
> kern.timecounter.choice: ACPI-safe(850) HPET(950) i8254(0) TSC(1000)
> dummy(-1000000)
> 
> root@storage:~ # sysctl kern.eventtimer.timer
> kern.eventtimer.timer: LAPIC
> 
> root@storage:~ # sysctl kern.eventtimer.choice
> kern.eventtimer.choice: LAPIC(600) HPET(350) HPET1(340) HPET2(340)
> HPET3(340) i8254(100) RTC(0)
> ---

Try switching to "HPET" in both cases and do not wait for next disaster
but do it right now with sysctl command, reboot is not needed.
You can restore default settings any moment same way.

And see if the problem goes away.




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