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#!/usr/bin/env bash
./build.sh clean
./build.sh profile
./mknes
./build.sh profile_release
runs=10
frames=4096
events="cycles,instructions,task-clock"
tmp=$(mktemp)
taskset -c 1 ./mknes
> "$tmp"
for i in $(seq 1 $runs); do
taskset -c 1 chrt -f 99 perf stat -x, -e $events -- ./mknes 2>>"$tmp"
done
awk -F, -v F="$frames" '
$3=="cycles" { c[++nc]=$1/F }
$3=="instructions" { i[++ni]=$1/F }
# $3=="task-clock" { t[++nt]=$1 } # milliseconds NOTE(peter): changed to nanoseconds...
$3=="task-clock" { t[++nt]=$1/1000000 }
END {
for(k=1;k<=nc;k++) sumc+=c[k]; mc=sumc/nc
for(k=1;k<=ni;k++) sumi+=i[k]; mi=sumi/ni
for(k=1;k<=nt;k++) sumt+=t[k]; mt=sumt/nt
for(k=1;k<=nc;k++) sdc+=(c[k]-mc)^2; sdc=sqrt(sdc/(nc-1))
for(k=1;k<=ni;k++) sdi+=(i[k]-mi)^2; sdi=sqrt(sdi/(ni-1))
for(k=1;k<=nt;k++) sdt+=(t[k]-mt)^2; sdt=sqrt(sdt/(nt-1))
ms_per_frame = mt / F
fps = F / (mt / 1000)
printf "IPC (insn/cycle) = %.3f\n", mi/mc
printf "cycles/frame mean=%.0f sd=%.0f relSD=%.3f%% n=%d\n", mc, sdc, 100*sdc/mc, nc
printf "insn/frame mean=%.0f sd=%.0f relSD=%.3f%% n=%d\n", mi, sdi, 100*sdi/mi, ni
printf "time (ms) mean=%.3f sd=%.3f relSD=%.3f%% n=%d\n", mt, sdt, 100*sdt/mt, nt
printf "FPS (frames/second) = %.2f\n", fps
printf "ms/frame = %.6f\n", ms_per_frame
}' "$tmp"
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