On 2019-12-13 14:40, Andrey V. Elsukov wrote:
On 05.12.2018 17:20, Slava Shwartsman wrote:
Author: slavash
Date: Wed Dec 5 14:20:57 2018
New Revision: 341578
URL: https://svnweb.freebsd.org/changeset/base/341578
Log:
mlx5en: Remove the DRBR and associated logic in the transmit path.
The hardware queues are deep enough currently and using the DRBR and associated
callbacks only leads to more task switching in the TX path. The is also a
race
setting the queue_state which can lead to hung TX rings.
JFYI. We have compared the same router+firewall workloads on the host
with this change and before, and I can say, that without DRBR on TX now
we constantly have several percents of packets drops due to ENOBUFS
error from mlx5e_xmit().
Have you tried to tune the TX/RX parameters?
Especially the tx_queue_size .
--HPS
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