Little research how rm -rf and tar kill server

[Mark Felder]

On Mon, Mar 30, 2015, at 10:53, Artem Kuchin wrote:
> 
> This is normal state, not under rm -rf
> Do you need it during  rm -rf  ?
> 

No, but I wonder if changing the timer from LAPIC to HPET or possibly
one of the other timers makes the system more responsive under that
load. Would you mind testing that?

You can switch the timer like this:

sysctl kern.eventtimer.timer=HPET

And then run some of your I/O tests

The full list of available timers is under sysctl kern.eventtimer.choice
-- you could try any of them, but the higher the number next to the name
is the higher perceived "quality" of the timer by the system.

Note this doesn't survive a reboot, but could be set in /etc/sysctl.conf
or /boot/loader.conf