1e28e842e0
Currently, the hns3 statistics may be inaccurate due to the
following two problems:
1. Queue-level statistics are read from the firmware, and only one Rx or
Tx can be read at a time. This results in a large time interval
between reading multiple queues statistics in a stress scenario, such
as 1280 queues used by a PF or 256 functions used at the same time.
Especially when the 256 functions are used at the same time, the
interval between every two firmware commands in a function can be
huge, because the scheduling mechanism of the firmware is similar to
RR.
2. The current statistics are read by type. The HW statistics are read
first, and then the software statistics are read. Due to preceding
reasons, HW reading may be time-consuming, which cause a
synchronization problem between SW and HW statistics of the same
queue.
In this patch, queue-level statistics are directly read from the bar
instead of the firmware, and all the statistics of a queue include HW
and SW are read at a time to reduce inconsistency.
Fixes: 8839c5e202f3 ("net/hns3: support device stats")
Cc: stable@dpdk.org
Signed-off-by: Chengchang Tang <tangchengchang@huawei.com>
Signed-off-by: Lijun Ou <oulijun@huawei.com>
DPDK is a set of libraries and drivers for fast packet processing. It supports many processor architectures and both FreeBSD and Linux. The DPDK uses the Open Source BSD-3-Clause license for the core libraries and drivers. The kernel components are GPL-2.0 licensed. Please check the doc directory for release notes, API documentation, and sample application information. For questions and usage discussions, subscribe to: users@dpdk.org Report bugs and issues to the development mailing list: dev@dpdk.org