c67df11f6e
We used to dequeue one skb during recvmsg() from skb_array, this could be inefficient because of the bad cache utilization and spinlock touching for each packet. This patch tries to batch them by calling batch dequeuing helpers explicitly on the exported skb array and pass the skb back through msg_control for underlayer socket to finish the userspace copying. Batch dequeuing is also the requirement for more batching improvement on receive path. Tests were done by pktgen on tap with XDP1 in guest. Host is Intel(R) Xeon(R) CPU E5-2650 0 @ 2.00GHz. rx batch | pps 0 2.25Mpps 1 2.33Mpps (+3.56%) 4 2.33Mpps (+3.56%) 16 2.35Mpps (+4.44%) 64 2.42Mpps (+7.56%) <- Default rx batching 128 2.40Mpps (+6.67%) 256 2.38Mpps (+5.78%) Signed-off-by: Jason Wang <jasowang@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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| .. | ||
| Kconfig | ||
| Kconfig.vringh | ||
| Makefile | ||
| net.c | ||
| scsi.c | ||
| test.c | ||
| test.h | ||
| vhost.c | ||
| vhost.h | ||
| vringh.c | ||
| vsock.c | ||