On 10/09/2018 03:48 PM, Florian Fainelli wrote: > This is based on Stephen's v4.14 patches, with the necessary merge > conflicts, and the lack of timer_setup() on the 4.9 baseline. > > Perf results on a gigabit capable system, before and after are below. > > Series can also be found here: > > https://github.com/ffainelli/linux/commits/fragment-stack-v4.9 > > > PerfTop: 457 irqs/sec kernel:74.4% exact: 0.0% [4000Hz cycles], (all, 4 CPUs) > ------------------------------------------------------------------------------- > > 29.62% [kernel] [k] ip_defrag > 6.57% [kernel] [k] arch_cpu_idle > 1.72% [kernel] [k] v7_dma_inv_range > 1.68% [kernel] [k] __netif_receive_skb_core > 1.43% [kernel] [k] fib_table_lookup > 1.30% [kernel] [k] finish_task_switch > 1.08% [kernel] [k] ip_rcv > 1.01% [kernel] [k] skb_release_data > 0.99% [kernel] [k] __slab_free > 0.96% [kernel] [k] bcm_sysport_poll > 0.88% [kernel] [k] __netdev_alloc_skb > 0.87% [kernel] [k] tick_nohz_idle_enter > 0.86% [kernel] [k] dev_gro_receive > 0.85% [kernel] [k] _raw_spin_unlock_irqrestore > 0.84% [kernel] [k] __memzero > 0.74% [kernel] [k] tick_nohz_idle_exit > 0.73% ld-2.24.so [.] do_lookup_x > 0.66% [kernel] [k] kmem_cache_free > 0.66% [kernel] [k] bcm_sysport_rx_refill > 0.65% [kernel] [k] eth_type_trans > > > After patching: > > PerfTop: 170 irqs/sec kernel:86.5% exact: 0.0% [4000Hz cycles], (all, 4 CPUs) > ------------------------------------------------------------------------------- > > 7.79% [kernel] [k] arch_cpu_idle > 5.14% [kernel] [k] v7_dma_inv_range > 4.20% [kernel] [k] ip_defrag > 3.89% [kernel] [k] __netif_receive_skb_core > 3.65% [kernel] [k] fib_table_lookup > 2.16% [kernel] [k] finish_task_switch > 1.93% [kernel] [k] _raw_spin_unlock_irqrestore > 1.90% [kernel] [k] ip_rcv > 1.84% [kernel] [k] bcm_sysport_poll > 1.83% [kernel] [k] __memzero > 1.65% [kernel] [k] __netdev_alloc_skb > 1.60% [kernel] [k] __slab_free > 1.49% [kernel] [k] __do_softirq > 1.49% [kernel] [k] bcm_sysport_rx_refill > 1.31% [kernel] [k] dma_cache_maint_page > 1.25% [kernel] [k] tick_nohz_idle_enter > 1.24% [kernel] [k] ip_route_input_noref > 1.17% [kernel] [k] eth_type_trans > 1.06% [kernel] [k] fib_validate_source > 1.03% [kernel] [k] inet_frag_find > > Dan Carpenter (1): > ipv4: frags: precedence bug in ip_expire() > > Eric Dumazet (22): > inet: frags: change inet_frags_init_net() return value > inet: frags: add a pointer to struct netns_frags > inet: frags: refactor ipfrag_init() > inet: frags: refactor ipv6_frag_init() > inet: frags: refactor lowpan_net_frag_init() > ipv6: export ip6 fragments sysctl to unprivileged users > rhashtable: add schedule points > inet: frags: use rhashtables for reassembly units > inet: frags: remove some helpers > inet: frags: get rif of inet_frag_evicting() > inet: frags: remove inet_frag_maybe_warn_overflow() > inet: frags: break the 2GB limit for frags storage > inet: frags: do not clone skb in ip_expire() > ipv6: frags: rewrite ip6_expire_frag_queue() > rhashtable: reorganize struct rhashtable layout > inet: frags: reorganize struct netns_frags > inet: frags: get rid of ipfrag_skb_cb/FRAG_CB > inet: frags: fix ip6frag_low_thresh boundary > net: speed up skb_rbtree_purge() > net: pskb_trim_rcsum() and CHECKSUM_COMPLETE are friends > net: add rb_to_skb() and other rb tree helpers > net: sk_buff rbnode reorg > > Florian Westphal (1): > ipv6: defrag: drop non-last frags smaller than min mtu > > Peter Oskolkov (4): > ip: discard IPv4 datagrams with overlapping segments. > net: modify skb_rbtree_purge to return the truesize of all purged > skbs. > ip: add helpers to process in-order fragments faster. > ip: process in-order fragments efficiently > > Taehee Yoo (1): > ip: frags: fix crash in ip_do_fragment() > Strange, I do not see "ip: use rb trees for IP frag queue." in this list ? Thanks !
