Public bug reported: Performing testing on Ubuntu 18.04 LTS and Ubuntu 20.04 LTS.
Setup: ocserv built from https://gitlab.com/openconnect/ocserv.git @ 59bdd070b6b9f893d3f552b6a8895a5f4eb014da, running in Docker container built from Ubuntu 18.04 Docker image. Test: 1000 clients connected using openconnect (https://gitlab.com/openconnect/openconnect) (clients spread across 54 VMs, each client running in a Docker container for network isolation) 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@lgw01-amd64-003)) - less than 1% packet loss. Ubuntu 18.04 / Linux kernel version 5.3.0-1022-azure (buildd@lcy01-amd64-001)) - 9% packet loss. 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. ** Affects: linux-meta-azure-5.3 (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1881787 Title: High rate of packet loss upgrading to kernel 5.3 and later. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-meta-azure-5.3/+bug/1881787/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
