diff options
| author | Eric Dumazet | 2012-11-05 17:20:42 +0100 |
|---|---|---|
| committer | David S. Miller | 2012-11-07 21:30:19 +0100 |
| commit | ecfd2ce1a9d5e6376ff5c00b366345160abdbbb7 (patch) | |
| tree | 5637585d93c43b15a3c49022a0b0967c2d914653 /drivers/net/ethernet/mellanox/mlx4/en_netdev.c | |
| parent | usbnet: runtime wake up device before calling usbnet_{read|write}_cmd (diff) | |
| download | kernel-qcow2-linux-ecfd2ce1a9d5e6376ff5c00b366345160abdbbb7.tar.gz kernel-qcow2-linux-ecfd2ce1a9d5e6376ff5c00b366345160abdbbb7.tar.xz kernel-qcow2-linux-ecfd2ce1a9d5e6376ff5c00b366345160abdbbb7.zip | |
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 8112ec3b872,
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>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx4/en_netdev.c')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx4/en_netdev.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c index edd9cb8d3e1d..2b23ca21b320 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c @@ -870,7 +870,7 @@ static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv) /* If we haven't received a specific coalescing setting * (module param), we set the moderation parameters as follows: * - moder_cnt is set to the number of mtu sized packets to - * satisfy our coelsing target. + * satisfy our coalescing target. * - moder_time is set to a fixed value. */ priv->rx_frames = MLX4_EN_RX_COAL_TARGET; |