Open bazuchan opened 7 years ago
bazuchan
commented
7 years ago We are running syncookied on Centos7 with elrepo 4.8 mainline kernel. Network card is Intel X520 with netmap-aware ixgbe driver. Rust is installed with rust-up script from nightly channel.
bazuchan
commented
7 years ago Perf top with "good" version:
26.26% sc14 [.] sha1_transform_ssse3
20.00% sc14 [.] syncookied::packet::handle_reply
7.12% [kernel] [k] native_queued_spin_lock_slowpath
6.70% libc-2.17.so [.] __memcmp_sse4_1
5.65% sc14 [.] syncookied::run::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::hc125f6adeb87694e
2.33% [kernel] [k] netmap_poll
1.62% sc14 [.] syncookied::tx::Sender::run
1.28% [kernel] [k] ixgbe_netmap_rxsync
1.24% [kernel] [k] _raw_spin_lock_irqsave
1.08% sc14 [.] <std::net::ip::Ipv4Addr as core::cmp::Ord>::cmp
1.08% sc14 [.] csum_partial_folded
1.02% sc14 [.] std::net::ip::Ipv4Addr::new
0.97% [kernel] [k] cpupri_set
0.95% [kernel] [k] ixgbe_netmap_txsync
0.87% sc14 [.] csum_partial
0.75% sc14 [.] <pnet::packet::tcp::MutableTcpOptionPacket<'a> as pnet::packet::MutablePacket>::payload_mut
0.75% sc14 [.] pnet::packet::ethernet::MutableEthernetPacket::set_destination
0.64% sc14 [.] pnet::packet::ethernet::MutableEthernetPacket::set_source
0.60% [kernel] [k] fput
0.59% [kernel] [k] netmap_notify Perf top with "bad" version:
38.48% [kernel] [k] native_queued_spin_lock_slowpath
12.24% sc2 [.] syncookied::ring::Worker::run
11.62% sc2 [.] sha1_transform_ssse3
8.97% [kernel] [k] netmap_poll
5.62% [kernel] [k] _raw_spin_lock_irqsave
3.97% [kernel] [k] netmap_notify
2.18% [kernel] [k] __wake_up_common
2.12% [kernel] [k] fput
1.39% sc2 [.] <pnet::util::MacAddr as core::cmp::PartialEq>::eq
0.93% [kernel] [k] ixgbe_netmap_rxsync
0.57% [kernel] [k] _raw_spin_unlock_irqrestore
0.56% [kernel] [k] netmap_rx_irq
0.53% sc2 [.] csum_partial
0.51% sc2 [.] <std::net::ip::Ipv4Addr as core::cmp::Ord>::cmp
0.47% sc2 [.] csum_partial_folded
0.46% [kernel] [k] ixgbe_netmap_txsync
0.42% [kernel] [k] do_sys_poll
0.40% sc2 [.] pnet::packet::ethernet::MutableEthernetPacket::set_source
0.32% [kernel] [k] __wake_up
0.32% [kernel] [k] napi_complete_done
0.27% [kernel] [k] native_irq_return_iret
0.27% sc2 [.] <pnet::packet::tcp::MutableTcpOptionPacket<'a> as pnet::packet::MutablePacket>::payload_mut
0.26% [kernel] [k] ixgbe_poll
On version 223f292a288990877a5aba8a79b227a532878db4 and before syncookied was using about 40% cpu under 5Gbps syn flood. Next working version 73e1ac0ce12a2fd24a0d6596c6b16fbd2168b346 (and any newer version) utilizes 100% cpu under same load.