Timing issue with Dummynet on high kernel timer interrupt

[Hans Petter Selasky]

On 11/06/15 17:43, Ian Lepore wrote:
> On Fri, 2015-11-06 at 17:28 +0100, Hans Petter Selasky wrote:
>> Hi,

>
> Do the test II results change with this setting?
>
>    sysctl kern.timecounter.alloweddeviation=0
>

Yes, it looks much better:

debug.total: 10013 -> 0
debug.total: 10013 -> 0
debug.total: 10012 -> 0
debug.total: 10012 -> 0
debug.total: 10012 -> 0
debug.total: 10013 -> 0
debug.total: 10012 -> 1
debug.total: 10013 -> 0
debug.total: 10013 -> 0
debug.total: 10013 -> 0
debug.total: 10012 -> 0
debug.total: 10013 -> 0
debug.total: 10013 -> 0

--HPS