From owner-freebsd-fs@FreeBSD.ORG  Mon Mar 30 15:52:49 2015
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Date: Mon, 30 Mar 2015 18:53:19 +0300
From: Artem Kuchin <artem@artem.ru>
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Subject: Re: Little research how rm -rf and tar kill server
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30.03.2015 18:49, Mark Felder пишет:
> Just to feed my own curiosity, can you paste the output of this sysctl?
>
>
> sysctl kern.eventtimer
>
>
>
Of course, i will provide any info.

# sysctl kern.eventtimer
kern.eventtimer.et.LAPIC.flags: 7
kern.eventtimer.et.LAPIC.frequency: 50001037
kern.eventtimer.et.LAPIC.quality: 600
kern.eventtimer.et.HPET.flags: 7
kern.eventtimer.et.HPET.frequency: 14318180
kern.eventtimer.et.HPET.quality: 550
kern.eventtimer.et.RTC.flags: 17
kern.eventtimer.et.RTC.frequency: 32768
kern.eventtimer.et.RTC.quality: 0
kern.eventtimer.et.i8254.flags: 1
kern.eventtimer.et.i8254.frequency: 1193182
kern.eventtimer.et.i8254.quality: 100
kern.eventtimer.choice: LAPIC(600) HPET(550) i8254(100) RTC(0)
kern.eventtimer.singlemul: 2
kern.eventtimer.idletick: 0
kern.eventtimer.timer: LAPIC
kern.eventtimer.periodic: 0

This is normal state, not under rm -rf
Do you need it during  rm -rf  ?

Artem