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Date:   Sat, 5 Sep 2020 10:45:54 +0200
From:   Frank Wunderlich <frank-w@...lic-files.de>
To:     Landen Chao <landen.chao@...iatek.com>
Cc:     Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Sean Wang <sean.wang@...iatek.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Russell King <linux@...linux.org.uk>, netdev@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
        opensource@...rst.com, dqfext@...il.com,
        Landen Chao <landen.chao@...iatek.com>
Subject: Aw: [PATCH net-next v3 0/6] net-next: dsa: mt7530: add support for
 MT7531

tested full series on Bananapi-r64 (mt7531) running iperf3-server

[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.00  sec  1.09 GBytes   939 Mbits/sec    0             sender
[  5]   0.00-10.01  sec  1.09 GBytes   935 Mbits/sec                  receiver

reverse mode (-R)
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.01  sec  1.10 GBytes   941 Mbits/sec    0             sender
[  5]   0.00-10.00  sec  1.09 GBytes   939 Mbits/sec                  receiver

similar to bananapi-r2 (mt7530)

[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.00  sec  1.09 GBytes   938 Mbits/sec    0             sender
[  5]   0.00-10.01  sec  1.09 GBytes   936 Mbits/sec                  receiver

reverse-mode:

[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.01  sec  1.05 GBytes   905 Mbits/sec  14533             sender <<<<<<<<<<<
[  5]   0.00-10.00  sec  1.05 GBytes   905 Mbits/sec                  receiver

on last test i see iperf3 has ~30%cpu load and also ksoftirqd (using debian buster), so i tried opening server on my Laptop and running iperf -c on BPI-R2 with similar result

[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.00  sec  1.03 GBytes   886 Mbits/sec  13990             sender
[  5]   0.00-10.00  sec  1.03 GBytes   885 Mbits/sec                  receiver

in dmesg of both devices only DSA-Messages (nonfatal error -95 setting MTU on port) because of missing port_change_mtu callback. here i got a patch, but had not yet time to setup environment for testing jumbo-frames too. But this just as side-note

regards Frank

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