<div dir="auto">There is a continuous ping module I used to use which was posted on this list ages ago.<div dir="auto"><br></div><div dir="auto">I don't know if it was ever officially added though.</div><div dir="auto"><br></div><div dir="auto">It pings every second, perfect for detecting this sort of thing.</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Mar 19, 2019, 12:24 PM Daniel Pocock <<a href="mailto:daniel@pocock.pro">daniel@pocock.pro</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><br>
Hi,<br>
<br>
Can Smokeping be tweaked to gather data when such short intervals are<br>
involved or is there another tool anybody would recommend for this<br>
situation?<br>
<br>
I've observed short periods of high latency on a G.fast DSL connection<br>
(Swisscom / Init7, Turris Omnia with a G.fast SFP)<br>
<br>
It's been happening for some months now.<br>
<br>
The periods are between 1 to 2 seconds and it is noticeable on VoIP<br>
calls. It happens very regularly, maybe every few minutes, maybe every<br>
minute.<br>
<br>
On a VoIP call, we either notice a "fast-forward" sound as late packets<br>
are played quickly or we notice a gap of 1 to 2 seconds.<br>
<br>
If anybody can suggest how I can gather data about this it would be very<br>
welcome.<br>
<br>
Regards,<br>
<br>
Daniel<br>
<br>
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</blockquote></div>