This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed- vivid' to 'verification-done-vivid'.
If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: verification-needed-vivid -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1521053 Title: Network Performance dropping between vms on different location in Azure Status in linux package in Ubuntu: Invalid Status in linux source package in Vivid: Fix Committed Bug description: [Impact] Ubuntu VMs between different location in Azure , especially North Europe and East Europe in this case, have network performance issue. It should be around 100MB/s speed between them. but it's around 0.3MB/s when dropping happens. [Fix] Upstream development 0d158852a8089099a6959ae235b20f230871982f ("hv_netvsc: Clean up two unused variables") It's affected over 3.19.0-28-generic (ubuntu-vivid) [Testcase] Make 2 VMs on North Europe, West Europe each. Then run below test script NE VM - netcat & nload while true; do netcat -l 8080 < /dev/zero; done; nload -u M eth0 ( need nload pkg ) - iperf iperf -s -f M WE VM - netcat for i in {1..1000} do timeout 30s nc NE_HOST 8080 > /dev/null done - iperf iperf -c HOST -f M Network performance dropping can be seen frequently. More Tests http://pastebin.ubuntu.com/13657083/ To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1521053/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
