nodejs xtrace dtrace trace performance heat map flame graph

fgNow.sh

if [ -z $1 ] || [ -z $2 ]
then
        echo "Usage: [node file] [output svg]"
        exit 1
fi

# https://www.brendangregg.com/blog/2014-09-17/node-flame-graphs-on-linux.html
# https://nodejs.org/en/docs/guides/diagnostics-flamegraph/

sudo perf record -e cycles:u -g -- node --interpreted-frames-native-stack --perf-basic-prof-only-functions "$1"
sudo perf script > perfs.out
sed -i \
  -e "/( __libc_start| LazyCompile | v8::internal::| Builtin:| Stub:| LoadIC:|\[unknown\]| LoadPolymorphicIC:)/d" \
  -e 's/ LazyCompile:[*~]\?/ /' \
  perfs.out
./FlameGraph/stackcollapse-perf.pl < ./perfs.out | ./FlameGraph/flamegraph.pl > "$2"

echo "Done! saved to: $2"

prepare_ubuntu.sh

# install & run perf (ubuntu)
sudo apt-get install linux-tools-common linux-tools-generic linux-tools-`uname -r`

# Make graph
git clone --depth 1 http://github.com/brendangregg/FlameGraph

For ts-node... but that Flame Graph I got was very generic... node -r ts-node/register ..... app.js