diff options
| author |   Eric Dumazet <edumazet@google.com> | 2015-11-18 06:30:58 -0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2015-11-18 16:17:40 -0500 |
| commit | 868fdb06063d92f4373be4974d1b651a32bb9442 (patch) | |
| tree | e91b7bc09c6ae9ecf873ad785a9381d6956837c2 /drivers/net/ethernet/myricom/myri10ge | |
| parent | bnx2x: remove bnx2x_low_latency_recv() support (diff) | |
| download | linux-dev-868fdb06063d92f4373be4974d1b651a32bb9442.tar.xz linux-dev-868fdb06063d92f4373be4974d1b651a32bb9442.zip | |
mlx4: remove mlx4_en_low_latency_recv()
Busy polling can now be handled in generic NAPI poll infrastructure.
This removes complexity and fast path overhead :
mlx4 used two spin_lock()/spin_unlock() pair per napi->poll() call
in mlx4_en_cq_lock_napi()/mlx4_en_cq_unlock_napi()
Tested:
Without busy polling :
lpaa23:~# echo 0 >/proc/sys/net/core/busy_read
lpaa24:~# echo 0 >/proc/sys/net/core/busy_read
lpaa23:~# ./netperf -H lpaa24 -t TCP_RR
MIGRATED TCP REQUEST/RESPONSE TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to lpaa24.prod.google.com () port 0 AF_INET : first burst 0
Local /Remote
Socket Size Request Resp. Elapsed Trans.
Send Recv Size Size Time Rate
bytes Bytes bytes bytes secs. per sec
16384 87380 1 1 10.00 47330.78
With busy polling :
lpaa23:~# echo 70 >/proc/sys/net/core/busy_read
lpaa24:~# echo 70 >/proc/sys/net/core/busy_read
lpaa23:~# ./netperf -H lpaa24 -t TCP_RR
MIGRATED TCP REQUEST/RESPONSE TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to lpaa24.prod.google.com () port 0 AF_INET : first burst 0
Local /Remote
Socket Size Request Resp. Elapsed Trans.
Send Recv Size Size Time Rate
bytes Bytes bytes bytes secs. per sec
16384 87380 1 1 10.00 97643.55
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/myricom/myri10ge')
0 files changed, 0 insertions, 0 deletions