stmmac/RTL8211F/Meson GXBB: TX throughput problems
neolynx at gmail.com
Sun Sep 18 13:42:40 PDT 2016
> For example, you could try disabling the scatter-gather or tx-cum
> via ethtool and seeing if there is some benefit; so we could image
> some problem on your HW or SYNP MAC integration for checksumming
> on tx side.
disabling the following:
ethtool -K eth0 sg off
ethtool -K eth0 tx off
does not prevent the network communication going down..
> Also you could check the AXI tuning and PBL value. To be honest
> (thinking about your problem) I can actually suspect some related
> problem on bus setup. So I suggest you to play with these value
> (better if you ask for having values from HW validation on your side).
> Otherwise the stmmac uses a default that cannot be good for your
> platform. For example, sometime I have seen that PBL is better if
> reduced to 8 instead of 32 and w/o 4xPBL...
how can I set those values ?
thanks for your time,
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