netdev - Re: [PATCH v2 0/4] RGMII RX and TX clock delays using Atheros 8035

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Date:   Fri, 21 Jul 2017 15:16:04 +0200
From:   Marc Gonzalez <marc_gonzalez@...madesigns.com>
To:     Florian Fainelli <f.fainelli@...il.com>,
        Andrew Lunn <andrew@...n.ch>, Mans Rullgard <mans@...sr.com>,
        Martin Blumenstingl <martin.blumenstingl@...il.com>,
        Grygorii Strashko <grygorii.strashko@...com>,
        Fabio Estevam <fabio.estevam@....com>,
        Zefir Kurtisi <zefir.kurtisi@...atec.com>,
        Timur Tabi <timur@...eaurora.org>,
        Daniel Mack <zonque@...il.com>
CC:     netdev <netdev@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        "David S. Miller" <davem@...emloft.net>,
        Thibaud Cornic <thibaud_cornic@...madesigns.com>,
        Mason <slash.tmp@...e.fr>
Subject: Re: [PATCH v2 0/4] RGMII RX and TX clock delays using Atheros 8035

On 21/07/2017 14:47, Marc Gonzalez wrote:

> fping caps at 1000 packets per second, which limits
> its usefulness as a benchmarking tool.

"Normal" ping is slightly faster (5000 packets per second).

time ping -f -c 60000 -s 1450 -q 172.27.64.1

--- 172.27.64.1 ping statistics ---
60000 packets transmitted, 60000 received, 0% packet loss, time 12059ms
rtt min/avg/max/mdev = 0.159/0.167/3.536/0.021 ms, ipg/ewma 0.201/0.166 ms

real    0m12.067s
user    0m0.899s
sys     0m1.886s

NIC statistics:
     rx_bytes_ok: 89760375
     rx_frames_ok: 60003
     rx_undersize_frames: 0
     rx_fragment_frames: 0
     rx_64_byte_frames: 2
     rx_127_byte_frames: 0
     rx_255_byte_frames: 1
     rx_511_byte_frames: 0
     rx_1023_byte_frames: 0
     rx_max_size_frames: 60000
     rx_oversize_frames: 0
     rx_bad_fcs_frames: 0
     rx_broadcast_frames: 1
     rx_multicast_frames: 0
     rx_control_frames: 0
     rx_pause_frames: 0
     rx_unsup_control_frames: 0
     rx_align_error_frames: 0
     rx_overrun_frames: 0
     rx_jabber_frames: 0
     rx_bytes: 89760375
     rx_frames: 60003
     tx_bytes_ok: 89760128
     tx_frames_ok: 60002
     tx_64_byte_frames: 2
     tx_127_byte_frames: 0
     tx_255_byte_frames: 0
     tx_511_byte_frames: 0
     tx_1023_byte_frames: 0
     tx_max_size_frames: 60000
     tx_oversize_frames: 0
     tx_broadcast_frames: 1
     tx_multicast_frames: 0
     tx_control_frames: 0
     tx_pause_frames: 0
     tx_underrun_frames: 0
     tx_single_collision_frames: 0
     tx_multi_collision_frames: 0
     tx_deferred_collision_frames: 0
     tx_late_collision_frames: 0
     tx_excessive_collision_frames: 0
     tx_bytes: 89760128
     tx_frames: 60002
     tx_collisions: 0