From: Shahaf Shuler <shahafs@mellanox.com>
To: nelio.laranjeiro@6wind.com, adrien.mazarguil@6wind.com,
yskoh@mellanox.com
Cc: dev@dpdk.org
Subject: [dpdk-dev] [PATCH 1/2] doc: update mlx5 statistics query
Date: Wed, 29 Nov 2017 13:29:07 +0200 [thread overview]
Message-ID: <20171129112908.29493-1-shahafs@mellanox.com> (raw)
Update the guide with more details on the different statistics query
possible with MLX5 PMD.
Signed-off-by: Shahaf Shuler <shahafs@mellanox.com>
---
doc/guides/nics/mlx5.rst | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/doc/guides/nics/mlx5.rst b/doc/guides/nics/mlx5.rst
index f9558da89..154db64d7 100644
--- a/doc/guides/nics/mlx5.rst
+++ b/doc/guides/nics/mlx5.rst
@@ -105,8 +105,6 @@ Limitations
-----------
- Inner RSS for VXLAN frames is not supported yet.
-- Port statistics through software counters only. Flow statistics are
- supported by hardware counters.
- Hardware checksum RX offloads for VXLAN inner header are not supported yet.
- Forked secondary process not supported.
- Flow pattern without any specific vlan will match for vlan packets as well:
@@ -134,6 +132,17 @@ Limitations
to 0 are not supported.
- VXLAN TSO and checksum offloads are not supported on VM.
+Statistics
+----------
+
+MLX5 supports various of methods to report statistics:
+
+Port statistics can be queried using ``rte_eth_stats_get()``. The port statistics are through SW only and counts the number of packets received or sent successfully by the PMD.
+
+Extended statistics can be queried using ``rte_eth_xstats_get()``. The extended statistics expose a wider set of counters counted by the device. The extended port statistics counts the number of packets received or sent successfully by the port. As Mellanox NICs are using the :ref:`Bifurcated Linux Driver <linux_gsg_linux_drivers>` those counters counts also packet received or sent by the Linux kernel. The counters with ``_phy`` suffix counts the total events on the physical port, therefore not valid for VF.
+
+Finally per-flow statistics can by queried using ``rte_flow_query`` when attaching a count action for specific flow. The flow counter counts the number of packets received successfully by the port and match the specific flow.
+
Configuration
-------------
--
2.12.0
next reply other threads:[~2017-11-29 11:29 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-29 11:29 Shahaf Shuler [this message]
2017-11-29 11:29 ` [dpdk-dev] [PATCH 2/2] net/mlx5: add physical port counters Shahaf Shuler
2017-11-29 12:14 ` [dpdk-dev] [PATCH 1/2] doc: update mlx5 statistics query Nelio Laranjeiro
2017-11-29 13:34 ` Shahaf Shuler
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