This patch series improves the performances of IPv6 SR by optimizing skb head reallocation and extending the use of dst_cache. The overall performances improve by 35%.
Before patch series (SRH encap): Result: OK: 7348320(c7347271+d1048) usec, 5000000 (1000byte,0frags) 680427pps 5443Mb/sec (5443416000bps) errors: 0 After patch series (SRH encap): Result: OK: 4774543(c4774084+d459) usec, 5000000 (1000byte,0frags) 1047220pps 8377Mb/sec (8377760000bps) errors: 0 Baseline for plain IPv6 forwarding: Result: OK: 4244144(c4243722+d422) usec, 5000000 (1000byte,0frags) 1178093pps 9424Mb/sec (9424744000bps) errors: 0 David Lebrun (2): ipv6: sr: expand skb head only if necessary ipv6: sr: use dst_cache in seg6_input net/ipv6/seg6_iptunnel.c | 31 ++++++++++++++++++++++++++++--- 1 file changed, 28 insertions(+), 3 deletions(-) -- 2.10.2
