Re: XDP redirect measurements, gotchas and tracepoints

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On Mon, Aug 21, 2017 at 09:25:06PM +0200, Jesper Dangaard Brouer wrote:
> 
> Third gotcha(3): You got this far, loaded xdp on both interfaces, and
> notice now that (with default setup) you can RX with 14Mpps but only
> TX with 6.9Mpps (and might have 5% idle cycles).  I debugged this via
> perf tracepoint event xdp:xdp_redirect, and found this was due to
> overrunning the xdp TX ring-queue size.

we should probably fix this somehow.
Once tx-ing netdev added to devmap we can enable xdp on it automatically?




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