7 Replies Latest reply on May 3, 2013 11:44 AM by yairi

    Confusion with Packet and Byte counters for RoCE over ConnectX-3

    danfibm

      We are using RoCE over a CX3 (RHEL 6.4)

       

      driver: mlx4_en

      version: 2.1 (Apr  3 2013)

      firmware-version: 2.11.500

       

      We are confused by the RoCE packet and byte counters.  Eg,

          cat /sys/class/infiniband/mlx4_0/ports/1/counters_ext/port_xmit_packets_64

          cat /sys/class/infiniband/mlx4_0/ports/1/counters_ext/port_rcv_data_64

       

      The packet counters seem be about a factor of 4 smaller...  Ie, if we multiple the number by 4, it seems to match the switch counters.  The byte counters have a larger multiplication factor.

       

      Are we interpreting these counters correctly?

       

      Thanks,

      Dan

       

      Message was edited by: Brian Sparks Changed "CX3" to ConnectX-3 to ensure folks knew which product.