By default ksysguard is setup to with the following network sensors: - network/interfaces/(?!lo|bridge|usbus|bond).*/receiver/data - network/interfaces/(?!lo|bridge|usbus|bond).*/transmitter/data When a VPN connection is active (as an example) when hovering over "Network History" graph the following interfaces are listed: - eno1 - tun0 When looking at the traffic peeks they are exactly double of what one would expect based on numbers emitted by tools generating the traffic. Additionally, I created a graph of just tun0 traffic and it was exactly half the default graph. This has been reported against ubuntu and gnome's system monitor: https://bugs.launchpad.net/ubuntu/+source/gnome-system-monitor/+bug/1076880. A possibly related bug: https://bugs.kde.org/show_bug.cgi?id=353497. An example from my machine http://i.imgur.com/RkmrbIi.png. Reproducible: Always Steps to Reproduce: 1. Start VPN connection 2. Launch ksysguard 3. Perform VPN traffic with a known speed Actual Results: Double the actual speed is displayed Expected Results: The actual speed be displayed instead of summing virtual interfaces It is rather misleading and should be fixed.
Created attachment 118755 [details] Example Image from OP
*** Bug 353497 has been marked as a duplicate of this bug. ***
ksysguard is no longer maintained, in Plasma 6 there is the Plasma system monitor for this task. If your issue still happens with the Plasma 6 replacement, please re-open and we can move this bug to the new product, thanks!