*** This bug is a duplicate of bug 1862044 ***
https://bugs.launchpad.net/bugs/1862044
Public bug reported:
We are investigating migrating our servers from Xenial to Bionic.
We are seeing significant network differences between the 2 LTS versions.
Using the same hardware an machines
Public bug reported:
We are investigating migrating our servers from Xenial to Bionic.
We are seeing significant network differences between the 2 LTS versions.
Using the same hardware an machines connected to a single swith on the same
network, we see:
10% less packets throuput on bionic in
Reproducing step:
Take 3 machines, connect them on the same network through a single switch (to
limits network bandwith/latency effects)
run uperf on 3 of them, 2 slave and one master.
I am using the following uperf script:
SO here attached are 2 differents graphs that illustrate the problem.
So I ran uperf 1000 time on bionic and Xenial.
the bit throughput graph show the percentiles distribution of the bits/seconds
calculated by uperf. YOu will see 2 bionic run on 2 separate machine.
You will see that Xenial as
This second graph shows during the same run the number of packets per
second this time.
YOu can see that Xenial is sending less packets per second than bionic.
Also this is the output of tc -s qdisc for the second bionic node:
qdisc fq_codel 0: dev enp3s0 root refcnt 2 limit 10240p flows 1024
