Eric Dumazet ecfd2ce1a9 mlx4: change TX coalescing defaults ... mlx4 currently uses a too high tx coalescing setting, deferring TX completion interrupts by up to 128 us. With the recent skb_orphan() removal in commit 8112ec3b87, performance of a single TCP flow is capped to ~4 Gbps, unless we increase tcp_limit_output_bytes. I suggest using 16 us instead of 128 us, allowing a finer control. Performance of a single TCP flow is restored to previous levels, while keeping TCP small queues fully enabled with default sysctl. This patch is also a BQL prereq. Reported-by: Vimalkumar <j.vimal@gmail.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Yevgeny Petrilin <yevgenyp@mellanox.com> Cc: Or Gerlitz <ogerlitz@mellanox.com> Acked-by: Amir Vadai <amirv@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2012-11-07 15:30:19 -05:00
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mlx4	mlx4: change TX coalescing defaults	2012-11-07 15:30:19 -05:00
Kconfig	drivers/net/ethernet/*: Enabled vendor Kconfig options	2011-08-27 00:58:56 -07:00
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