High rate of packet loss upgrading to kernel 5.3 and later.
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux-azure (Ubuntu) |
New
|
Undecided
|
Unassigned | ||
linux-meta-azure-5.3 (Ubuntu) |
New
|
Undecided
|
Unassigned |
Bug Description
Performing testing on Ubuntu 18.04 LTS and Ubuntu 20.04 LTS.
Setup:
ocserv built from https:/
Test:
1000 clients connected using openconnect (https:/
Simulating 3 workloads:
1) IM traffic - (TCP, with server echoing the stream and client sending [1,1024] bytes every [2500,7500]ms)
2) Audio streaming - (UDP, with server sending 128kbps, sending packets 60 times per second)
3) web-browser - (Loading of 3mb web-page, with 11 elements requiring separate HTTP gets, reloading every 60 seconds.)
Results:
Ubuntu 18.04 / Linux kernel version 4.15.0-101-generic (buildd@
Ubuntu 18.04 / Linux kernel version 5.3.0-1022-azure (buildd@
Ubuntu 20.04 / Linux kernel version 5.4.0-33 - 9% packet loss.
Tested on both 18.04 and 20.04 VM running on Hyper-V and on a bare-metal install of Ubuntu 20.04 LTS.