[dpdk-stable] [PATCH v3] app/testpmd: fix CPU cycles per pkt stats on transmit modes

[Ferruh Yigit]

On 6/22/2020 10:04 AM, Phil Yang wrote:
> In txonly and flowgen forwarding mode, calculating CPU per packets with
> total received packets is not accurate. Use total transmitted packets
> for these cases.
> 
> The error output under txonly mode:
> testpmd> show fwd stats all
> 
> ---------------------- Forward statistics for port 0  -------------------
> RX-packets: 0              RX-dropped: 0             RX-total: 0
> TX-packets: 3582891927     TX-dropped: 401965824     TX-total: 3984857751
> TX-bursts : 86381636 [0% of 0 pkts + 85% of 64 pkts + 15% of 32 pkts]
> -------------------------------------------------------------------------
> 
> ---------------------- Forward statistics for port 1  -------------------
> RX-packets: 1              RX-dropped: 394351696     RX-total: 394351697
> TX-packets: 3582890632     TX-dropped: 401965568     TX-total: 3984856200
> TX-bursts : 86381679 [0% of 0 pkts + 85% of 64 pkts + 15% of 32 pkts]
> -------------------------------------------------------------------------
> 
> +++++++++++++++ Accumulated forward statistics for all ports+++++++++++++
> RX-packets: 1              RX-dropped: 394351696     RX-total: 394351697
> TX-packets: 7165782559     TX-dropped: 803931392     TX-total: 7969713951
> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> 
> CPU cycles/packet=54984156291.00 \
> (total cycles=54984156291 / total RX packets=1) at 200 MHz Clock
> 
> Fixes: 53324971a14e ("app/testpmd: display/clear forwarding stats on demand")
> Cc: stable at dpdk.org
>
> Signed-off-by: Phil Yang <phil.yang at arm.com>
> Reviewed-by: Ruifeng Wang <ruifeng.wang at arm.com>
> Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli at arm.com>

Tested-by: Ferruh Yigit <ferruh.yigit at intel.com>

Applied to dpdk-next-net/master, thanks.