#!/bin/bash cd "$(dirname "$(dirname $0)")" node=${NODE:-./iojs} name=${NAME:-stacks} if type sysctl &>/dev/null; then # darwin and linux sudo sysctl -w net.inet.ip.portrange.first=12000 sudo sysctl -w net.inet.tcp.msl=1000 sudo sysctl -w kern.maxfiles=1000000 kern.maxfilesperproc=1000000 elif type /usr/sbin/ndd &>/dev/null; then # sunos /usr/sbin/ndd -set /dev/tcp tcp_smallest_anon_port 12000 /usr/sbin/ndd -set /dev/tcp tcp_largest_anon_port 65535 /usr/sbin/ndd -set /dev/tcp tcp_max_buf 2097152 /usr/sbin/ndd -set /dev/tcp tcp_xmit_hiwat 1048576 /usr/sbin/ndd -set /dev/tcp tcp_recv_hiwat 1048576 fi ulimit -n 100000 $node benchmark/http_simple.js & nodepid=$! echo "iojs pid = $nodepid" sleep 1 # has to stay alive until dtrace exits dtrace -n 'profile-97/pid == '$nodepid' && arg1/{ @[jstack(150, 8000)] = count(); } tick-60s { exit(0); }' \ | grep -v _ZN2v88internalL21Builtin_HandleApiCallENS0_12_GLOBAL__N_116BuiltinA \ > "$name".src & dtracepid=$! echo "dtrace pid = $dtracepid" sleep 1 test () { c=$1 t=$2 l=$3 k=$4 ab $k -t 10 -c $c http://127.0.0.1:8000/$t/$l \ 2>&1 | grep Req } #test 100 bytes 1024 #test 10 bytes 100 -k #test 100 bytes 1024 -k #test 100 bytes 1024 -k #test 100 bytes 1024 -k echo 'Keep going until dtrace stops listening...' while pargs $dtracepid &>/dev/null; do test 100 bytes ${LENGTH:-1} -k done kill $nodepid echo 'Turn the stacks into a svg' stackvis dtrace flamegraph-svg < "$name".src > "$name".raw.svg echo 'Prune tiny stacks out of the graph' iojs -e ' var infile = process.argv[1]; var outfile = process.argv[2]; var output = ""; var fs = require("fs"); var input = fs.readFileSync(infile, "utf8"); input = input.split("id=\"details\" > "); var head = input.shift() + "id=\"details\" > "; input = input.join("id=\"details\" > "); var tail = ""; input = input.split("")[0]; var minyKept = Infinity; var minyOverall = Infinity; var rects = input.trim().split(/\n/).filter(function(rect) { var my = rect.match(/y="([0-9\.]+)"/); if (!my) return false; var y = +my[1]; if (!y) return false; minyOverall = Math.min(minyOverall, y); // pluck off everything that will be less than one pixel. var mw = rect.match(/width="([0-9\.]+)"/) if (mw) { var width = +mw[1]; if (!(width >= 1)) return false; } minyKept = Math.min(minyKept, y); return true; }); // move everything up to the top of the page. var ydiff = minyKept - minyOverall; rects = rects.map(function(rect) { var my = rect.match(/y="([0-9\.]+)"/); var y = +my[1]; var newy = y - ydiff; rect = rect.replace(/y="([0-9\.]+)"/, "y=\"" + newy + "\""); return rect; }); fs.writeFileSync(outfile, head + "\n" + rects.join("\n") + "\n" + tail); ' "$name".raw.svg "$name".svg echo '' echo 'done. Results in '"$name"'.svg'