[PATCH 1/2 net-next] net: fec: add napi support to improve proformance
Eric Dumazet
eric.dumazet at gmail.com
Wed Jan 23 01:21:11 EST 2013
On Wed, 2013-01-23 at 12:12 +0800, Frank Li wrote:
> Add napi support
>
> Before this patch
>
> iperf -s -i 1
> ------------------------------------------------------------
> Server listening on TCP port 5001
> TCP window size: 85.3 KByte (default)
> ------------------------------------------------------------
> [ 4] local 10.192.242.153 port 5001 connected with 10.192.242.138 port 50004
> [ ID] Interval Transfer Bandwidth
> [ 4] 0.0- 1.0 sec 41.2 MBytes 345 Mbits/sec
> [ 4] 1.0- 2.0 sec 43.7 MBytes 367 Mbits/sec
> [ 4] 2.0- 3.0 sec 42.8 MBytes 359 Mbits/sec
> [ 4] 3.0- 4.0 sec 43.7 MBytes 367 Mbits/sec
> [ 4] 4.0- 5.0 sec 42.7 MBytes 359 Mbits/sec
> [ 4] 5.0- 6.0 sec 43.8 MBytes 367 Mbits/sec
> [ 4] 6.0- 7.0 sec 43.0 MBytes 361 Mbits/sec
>
> After this patch
> [ 4] 2.0- 3.0 sec 51.6 MBytes 433 Mbits/sec
> [ 4] 3.0- 4.0 sec 51.8 MBytes 435 Mbits/sec
> [ 4] 4.0- 5.0 sec 52.2 MBytes 438 Mbits/sec
> [ 4] 5.0- 6.0 sec 52.1 MBytes 437 Mbits/sec
> [ 4] 6.0- 7.0 sec 52.1 MBytes 437 Mbits/sec
> [ 4] 7.0- 8.0 sec 52.3 MBytes 439 Mbits/sec
Strange, as you still call netif_rx()
NAPI should call netif_receive_skb() instead
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