Sounds like smokeping:

http://oss.oetiker.ch/smokeping/

Alex

From: Juliusz Chroboczek <jch@pps.jussieu.fr>
To: bloat@lists.bufferbloat.net
Sent: Tuesday, October 18, 2011 2:13 PM
Subject: [Bloat] Plotting ping times in real time?

Has anyone written a Linux program that plots ping times in real time?
I.e. that gives the same information as running ping in an extra window
(with no -c argument), but graphically?

It would be helpful when manually tweaking an AQM.

--jch
_______________________________________________
Bloat mailing list
Bloat@lists.bufferbloat.net
https://lists.bufferbloat.net/listinfo/bloat