[smokeping-users] detecting short periods (1-2 seconds) of high latency

[doug.spindler at gmail.com]

Had a similar issue years ago.  Is the latency upstream from you?  Could you
use Wireshark?
Do you have any bandwidth monitoring tools such as Cacti or Observium? 

Any thoughts as to what's causing the latency? 



-----Original Message-----
From: smokeping-users
<smokeping-users-bounces+doug.spindler=gmail.com at lists.oetiker.ch> On Behalf
Of Daniel Pocock
Sent: Tuesday, March 19, 2019 9:24 AM
To: smokeping-users at lists.oetiker.ch
Subject: [smokeping-users] detecting short periods (1-2 seconds) of high
latency


Hi,

Can Smokeping be tweaked to gather data when such short intervals are
involved or is there another tool anybody would recommend for this
situation?

I've observed short periods of high latency on a G.fast DSL connection
(Swisscom / Init7, Turris Omnia with a G.fast SFP)

It's been happening for some months now.

The periods are between 1 to 2 seconds and it is noticeable on VoIP calls.
It happens very regularly, maybe every few minutes, maybe every minute.

On a VoIP call, we either notice a "fast-forward" sound as late packets are
played quickly or we notice a gap of 1 to 2 seconds.

If anybody can suggest how I can gather data about this it would be very
welcome.

Regards,

Daniel

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