Counters per VF?

1

Hello,

I just found that one can read the counters per port per interface at the following locations:

/sys/class/infiniband/mlx4_X/ports//counters/

/sys/class/infiniband/mlx4_X/ports//counters_ext/

Is there any way to get counters for specific virtual functions when using SRIOV

Vangelis

2

Hi Ophir,

Is there a solution for this? Im also getting the same error with respect to IB VFs within a VM.

Thanks!

Adit

3

Hi Adit,

A fix for this issue was intoroduced in mlnx ofed 3.1-1.0.0 and it is also available in upstream kernel since 4.3.

Eran.

4

Let me check that for you.

Ophir.

5

Hi Vangelis,

You can view the VF counters via the ethtool when connected to the VM.

Refer to this post as well.

Counters Troubleshooting for Linux Driver https://community.mellanox.com/s/article/counters-troubleshooting-for-linux-driver

Thanks,

Ophir.

6

Is it possible to view the VF counters for IB? Looks like it is not possible to get this information currently.

In the following example mlx4_0 is the PF and mlx4_1 and mlx4_2 are two probed VFs.

cat /sys/class/infiniband/mlx4_0/ports/1/counters/port_xmit_data

16199496

cat /sys/class/infiniband/mlx4_1/ports/1/counters/port_xmit_data

cat: /sys/class/infiniband/mlx4_1/ports/1/counters/port_xmit_data: Invalid argument

cat /sys/class/infiniband/mlx4_2/ports/1/counters/port_xmit_data

cat: /sys/class/infiniband/mlx4_2/ports/1/counters/port_xmit_data: Invalid argument