This bug is missing log files that will aid in diagnosing the problem.
While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:
apport-collect 1832641
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.
** Changed in: linux (Ubuntu)
Status: New => Incomplete
** Tags added: bionic
--
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/1832641
Title:
4.15.0-46-generic doesn't support ethtool adaptive-tx for mlx5 card
Status in linux package in Ubuntu:
Incomplete
Bug description:
Ubuntu Bionic 18.04 LTS:
We found that default bionic kernel 4.15.0-46-generic doesn't support ethtool
-C adaptive-tx
Our ethernet card is Mellanox Connect4-Lx and Connect5, and this will affect
performance of latency sensitive workloads like memcached.
Maybe we should backport adaptive-tx support to kernel 4.15 LTS?
Xeon Skylake 8168 x86_64:
ubuntu kernel 4.15.0-46-generic
eth: mlx5 connect-5
ethtool doesn't support adaptive-tx (ethernet TX interrupt coalesce)
X-Gene3 aarch64:
ubuntu kernel 4.18.0-16-generic, eth: mlx5 connect-4lx
ethtool supports adaptive-tx (ethernet TX interrupt coalesce)
Same Xeon Skylake 8168 x86_64
latest kernel 5.2.0-rc2
eth: mlx5 connect-5
ethtool supports adaptive-tx (ethernet TX interrupt coalesce)
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1832641/+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
