[libvirt-users] questions on clock catchup

[Jincheng Miao]

In http://libvirt.org/formatdomain.html#elementsTime , we could find there are
three attributes of catchup tickpolicy: limit, threshold and slew.

"
The catchup element has three optional attributes, each a positive integer.
The attributes are threshold, slew, and limit.
"
The xml format likes:
  <clock offset='utc'>
    <timer name='rtc' tickpolicy='catchup'>
      <catchup slew='123'/> or <catchup threshold='123'/> or <catchup limit='123'/>
    </timer>
  </clock>

But there is no further explanation.
Does anyone know what's the meaning of these attributes ?


Best wishes,
Jincheng Miao