path: root/tools/testing/selftests
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authorAlexei Starovoitov <ast@kernel.org>2019-04-17 19:09:25 -0700
committerAlexei Starovoitov <ast@kernel.org>2019-04-17 19:09:26 -0700
commit193d0002ef04d331466f4d211d008ff8257bfa6a (patch)
treeac3d55b7b5731f7e19fd2e27b242135b3fd453d2 /tools/testing/selftests
parentMerge branch 'af_xdp-smp_mb-fixes' (diff)
parentbpf: cpumap memory prefetchw optimizations for struct page (diff)
Merge branch 'bulk-cpumap-redirect'
Jesper Dangaard Brouer says: ==================== This patchset utilize a number of different kernel bulk APIs for optimizing the performance for the XDP cpumap redirect feature. Benchmark details are available here: https://github.com/xdp-project/xdp-project/blob/master/areas/cpumap/cpumap03-optimizations.org Performance measurements can be considered micro benchmarks, as they measure dropping packets at different stages in the network stack. Summary based on above: Baseline benchmarks - baseline-redirect: UdpNoPorts: 3,180,074 - baseline-redirect: iptables-raw drop: 6,193,534 Patch1: bpf: cpumap use ptr_ring_consume_batched - redirect: UdpNoPorts: 3,327,729 - redirect: iptables-raw drop: 6,321,540 Patch2: net: core: introduce build_skb_around - redirect: UdpNoPorts: 3,221,303 - redirect: iptables-raw drop: 6,320,066 Patch3: bpf: cpumap do bulk allocation of SKBs - redirect: UdpNoPorts: 3,290,563 - redirect: iptables-raw drop: 6,650,112 Patch4: bpf: cpumap memory prefetchw optimizations for struct page - redirect: UdpNoPorts: 3,520,250 - redirect: iptables-raw drop: 7,649,604 In this V2 submission I have chosen drop the SKB-list patch using netif_receive_skb_list() as it was not showing a performance improvement for these micro benchmarks. ==================== Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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