On 02/02/2015 10:52 AM, Eric Dumazet wrote: > On Mon, 2015-02-02 at 11:27 +0100, Michal Kazior wrote: > >> While testing I've had my internal GRO patch for ath10k and no stretch >> ack patches. > > Thanks for the data, I took a look at it. > > I am afraid this GRO patch might be the problem. > > It seems to break ACK clocking badly (linux stack has a somewhat buggy > tcp_tso_should_defer(), which relies on ACK being received smoothly, as > no timer is setup to split the TSO packet.) It is a big throughput win to have fewer TCP ack packets on wireless since it is a half-duplex environment. Is there anything we could improve so that we can have fewer acks and still get good tcp stack behaviour? Thanks, Ben -- Ben Greear <greearb@xxxxxxxxxxxxxxx> Candela Technologies Inc http://www.candelatech.com -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
