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57cad53f4e
Without packet steering NAT masquarade speed on BCM4908 /jumps/ between
two speeds:
1. 826 Mb/s (±3 Mb/s)
2. 909 Mb/s (±8 Mb/s)
and it never reaches ~940 Mb/s.
Proper packet steering can improve it. Below are testing results for
running iperf TCP traffic from LAN to WAN. They were used to pick up
golden values.
┌──────────┬──────────┬───────────┐
│ eth0 │ br-lan │ speed │
│ rps_cpus │ rps_cpus │ [Mbps] │
├──────────┼──────────┼───────────┤
│ 0 │ 0 │ 743 / 804 │
│ 0 │ 1 │ 738 / 821 │
│ 0 │ 2 │ ✓ 940 │
│ 0 │ 4 │ ✓ 938 │
│ 0 │ 8 │ ✓ 941 │
├──────────┼──────────┼───────────┤
│ 1 │ 0 │ 829 │
│ 1 │ 1 │ 829 │
│ 1 │ 2 │ ✓ 942 │
│ 1 │ 4 │ ✓ 941 │
│ 1 │ 8 │ ✓ 941 │
├──────────┼──────────┼───────────┤
│ 2 │ 0 │ ✓ 942 │
│ 2 │ 1 │ 926 │
│ 2 │ 2 │ ✓ 942 │
│ 2 │ 4 │ ✓ 942 │
│ 2 │ 8 │ ✓ 941 │
├──────────┼──────────┼───────────┤
│ 4 │ 0 │ ✓ 941 │
│ 4 │ 1 │ 925 │
│ 4 │ 2 │ ✓ 941 │
│ 4 │ 4 │ ✓ 941 │
│ 4 │ 8 │ ✓ 941 │
├──────────┼──────────┼───────────┤
│ 8 │ 0 │ ✓ 942 │
│ 8 │ 1 │ 925 │
│ 8 │ 2 │ ✓ 941 │
│ 8 │ 4 │ ✓ 942 │
│ 8 │ 8 │ ✓ 942 │
└──────────┴──────────┴───────────┘
Ref: fcbd39689e ("bcm53xx: enable & setup packet steering")
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
47 lines
1.1 KiB
Bash
Executable File
47 lines
1.1 KiB
Bash
Executable File
#!/bin/sh /etc/rc.common
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START=25
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USE_PROCD=1
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start_service() {
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reload_service
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}
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service_triggers() {
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procd_add_reload_trigger "network"
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procd_add_reload_trigger "firewall"
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procd_add_reload_interface_trigger "lan"
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}
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reload_service() {
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local packet_steering="$(uci -q get network.@globals[0].packet_steering)"
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local num_cpus="$(grep -c "^processor.*:" /proc/cpuinfo)"
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local flow_offloading="$(uci -q get firewall.@defaults[0].flow_offloading)"
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local flow_offloading_hw="$(uci -q get firewall.@defaults[0].flow_offloading_hw)"
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local rps_eth0=0
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local rps_br_lan=0
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[ "$num_cpus" -le 1 ] && return
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[ "$packet_steering" = 1 ] && {
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if [ ${flow_offloading_hw:-0} -gt 0 ]; then
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# HW offloading
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# Not implemented
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:
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elif [ ${flow_offloading:-0} -gt 0 ]; then
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# SW offloading
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# BCM4908 always reaches ~940 Mb/s
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:
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else
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# Default
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case "$num_cpus" in
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2) rps_eth0=2; rps_br_lan=2;;
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4) rps_eth0=e; rps_br_lan=e;;
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esac
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fi
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}
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echo $rps_eth0 > /sys/class/net/eth0/queues/rx-0/rps_cpus
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echo $rps_br_lan > /sys/class/net/br-lan/queues/rx-0/rps_cpus
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}
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