Hi Daniel, is the container running in shared or non-shared mode ? For shared mode, I assume the kernel sysfs counters which DPDK relies on for imissed/out_of_buffer are not exposed.
Best regards, Erez On Fri, 2 Jun 2023 at 18:07, Slava Ovsiienko <[email protected]> wrote: > Hi, Daniel > > > > I would recommend to take the following action: > > - update the firmware, 16.33.xxxx looks to be outdated a little bit. > Please, try 16.35.1012 or later. > mlx5_glue->devx_obj_create might succeed with the newer FW. > > - try to specify dv_flow_en=0 devarg, it forces mlx5 PMD to use rdma_core > library for queue management > and kernel driver will be aware about Rx queues being created and attach > them to the kernel counter set > > > > With best regards, > Slava > > > > *From:* Daniel Östman <[email protected]> > *Sent:* Friday, June 2, 2023 3:59 PM > *To:* [email protected] > *Cc:* Matan Azrad <[email protected]>; Slava Ovsiienko < > [email protected]>; [email protected]; > [email protected] > *Subject:* mlx5: imissed / out_of_buffer counter always 0 > > > > Hi, > > > > I’m deploying a containerized DPDK application in an OpenShift Kubernetes > environment using DPDK 21.11.3. > > The application uses a Mellanox ConnectX-5 100G NIC through VFs. > > > > The problem I have is that the ETH stats counter imissed (which seems to > be mapped to “out_of_buffer” internally in mlx5 PMD driver) is 0 when I > don’t expect it to be, i.e. when the application doesn’t read the packets > fast enough. > > > > Using GDB I can see that it tries to access the counter through > /sys/class/infiniband/mlx5_99/ports/1/hw_counters/out_of_buffer but the > hw_counters directory is missing so it will just return a zero value. I > don’t know why it is missing. > > When looking at mlx5_os_read_dev_stat() I can see that there is an > alternative way of reading the counter, through > mlx5_devx_cmd_queue_counter_query() but under the condition that > priv->q_counters are set. > > It doesn’t get set in my case because mlx5_glue->devx_obj_create() fails > (errno 22) in mlx5_devx_cmd_queue_counter_alloc(). > > > > Have I missed something? > > > > NIC info: > > Mellanox Technologies MT27800 Family [ConnectX-5] - 100Gb 2-port QSFP28 > MCX516A-CCHT > driver: mlx5_core > version: 5.0-0 > firmware-version: 16.33.1048 (MT_0000000417) > > > > Please let me know if I need to provide more information. > > > > Best regards, > > Daniel > > >
