2013/8/19 Felix Fietkau <n...@openwrt.org>: > On 2013-08-15 10:21 PM, Rafał Miłecki wrote: >> I'm afraid this "perf top" output doesn't really tell us where to look >> for optimizations :| I'll still try Felix ideas tomorrow, but I'm not >> sure if they help, since there isn't __copy_user_common anymore in the >> "perf top" output... > What's the CPU load while passing traffic without running perf?
During "ping 192.168.5.1" # top Mem: 19564K used, 107076K free, 0K shrd, 0K buff, 12916K cached CPU: 0% usr 0% sys 0% nic 99% idle 0% io 0% irq 0% sirq Load average: 0.17 0.10 0.04 1/24 810 # perf top PerfTop: 261 irqs/sec kernel:100.0% exact: 0.0% [4000Hz cycles], (all, 1 CPU) ------------------------------------------------------------------------------- 64.21% [kernel] [k] arch_cpu_idle 16.38% [kernel] [k] arch_local_irq_restore 12.01% [kernel] [k] cpu_startup_entry 2.16% [kernel] [k] rcu_idle_exit During "iperf -c 192.168.5.1" # top Mem: 19572K used, 107068K free, 0K shrd, 0K buff, 12916K cached CPU: 0% usr 0% sys 0% nic 3% idle 0% io 0% irq 96% sirq Load average: 0.29 0.11 0.04 1/24 809 PID PPID USER STAT VSZ %VSZ %CPU COMMAND 3 2 root RW 0 0% 9% [ksoftirqd/0] 809 376 root R 1496 1% 2% top 716 1 nobody S 964 1% 1% /usr/sbin/dnsmasq -C /var/etc/dnsmasq # perf top PerfTop: 265 irqs/sec kernel:100.0% exact: 0.0% [4000Hz cycles], (all, 1 CPU) ------------------------------------------------------------------------------- 6.41% [ip_tables] [k] ipt_do_table 4.01% [bgmac] [k] 0x000006ec 3.43% [kernel] [k] arch_cpu_idle 3.30% [kernel] [k] arch_local_irq_restore 3.25% [kernel] [k] ip_rcv 3.11% [nf_conntrack] [k] nf_conntrack_proto_fini 3.11% [nf_conntrack] [k] nf_conntrack_in > Have you tested bridging performance? Do you mean connecting both machines to the same VLAN? Like 2 LAN ports in the standard configuration? It gives me ~600Mb/s using OpenWrt. It's pretty much the same performance I got with the original firmware for transfer between 2 VLANs. [ 5] local 192.168.1.218 port 5001 connected with 192.168.1.131 port 59463 [ 5] 0.0-60.0 sec 4.16 GBytes 596 Mbits/sec -- Rafał _______________________________________________ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/cgi-bin/mailman/listinfo/openwrt-devel
