Hello Eric,
> Also make sure you have commit a181ceb501b31b4bf8812a5c84c716cc31d82c2d
> ("tcp: autocork should not hold first packet in write queue")
> in your tree.
confirmed:
(node-62) [~/work/linux-2.6] git show a181ceb501b31b4bf8812a5c84c716cc31d82c2d | head
commit a181ceb501b31b4bf8812a5c84c716cc31d82c2d
Author: Eric Dumazet <edumazet@xxxxxxxxxx>
Date: Tue Dec 17 09:58:30 2013 -0800
tcp: autocork should not hold first packet in write queue
Willem noticed a TCP_RR regression caused by TCP autocorking
on a Mellanox test bed. MLX4_EN_TX_COAL_TIME is 16 us, which can be
right above RTT between hosts.
Cheers,
Thomas
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