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#!/bin/bash
set -eufo pipefail
RUN_BENCH="sudo ./bench -w3 -d10 -a"
function hits()
{
echo "$*" | sed -E "s/.*hits\s+([0-9]+\.[0-9]+ ± [0-9]+\.[0-9]+M\/s).*/\1/"
}
function drops()
{
echo "$*" | sed -E "s/.*drops\s+([0-9]+\.[0-9]+ ± [0-9]+\.[0-9]+M\/s).*/\1/"
}
function header()
{
local len=${#1}
printf "\n%s\n" "$1"
for i in $(seq 1 $len); do printf '='; done
printf '\n'
}
function summarize()
{
bench="$1"
summary=$(echo $2 | tail -n1)
printf "%-20s %s (drops %s)\n" "$bench" "$(hits $summary)" "$(drops $summary)"
}
header "Single-producer, parallel producer"
for b in rb-libbpf rb-custom pb-libbpf pb-custom; do
summarize $b "$($RUN_BENCH $b)"
done
header "Single-producer, parallel producer, sampled notification"
for b in rb-libbpf rb-custom pb-libbpf pb-custom; do
summarize $b "$($RUN_BENCH --rb-sampled $b)"
done
header "Single-producer, back-to-back mode"
for b in rb-libbpf rb-custom pb-libbpf pb-custom; do
summarize $b "$($RUN_BENCH --rb-b2b $b)"
summarize $b-sampled "$($RUN_BENCH --rb-sampled --rb-b2b $b)"
done
header "Ringbuf back-to-back, effect of sample rate"
for b in 1 5 10 25 50 100 250 500 1000 2000 3000; do
summarize "rb-sampled-$b" "$($RUN_BENCH --rb-b2b --rb-batch-cnt $b --rb-sampled --rb-sample-rate $b rb-custom)"
done
header "Perfbuf back-to-back, effect of sample rate"
for b in 1 5 10 25 50 100 250 500 1000 2000 3000; do
summarize "pb-sampled-$b" "$($RUN_BENCH --rb-b2b --rb-batch-cnt $b --rb-sampled --rb-sample-rate $b pb-custom)"
done
header "Ringbuf back-to-back, reserve+commit vs output"
summarize "reserve" "$($RUN_BENCH --rb-b2b rb-custom)"
summarize "output" "$($RUN_BENCH --rb-b2b --rb-use-output rb-custom)"
header "Ringbuf sampled, reserve+commit vs output"
summarize "reserve-sampled" "$($RUN_BENCH --rb-sampled rb-custom)"
summarize "output-sampled" "$($RUN_BENCH --rb-sampled --rb-use-output rb-custom)"
header "Single-producer, consumer/producer competing on the same CPU, low batch count"
for b in rb-libbpf rb-custom pb-libbpf pb-custom; do
summarize $b "$($RUN_BENCH --rb-batch-cnt 1 --rb-sample-rate 1 --prod-affinity 0 --cons-affinity 0 $b)"
done
header "Ringbuf, multi-producer contention"
for b in 1 2 3 4 8 12 16 20 24 28 32 36 40 44 48 52; do
summarize "rb-libbpf nr_prod $b" "$($RUN_BENCH -p$b --rb-batch-cnt 50 rb-libbpf)"
done
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