perf.sh - Bash template for building flamegraphs of node process on remote instances

perf.sh

#!/bin/bash
#
# See: https://mixmax.com/blog/determining-why-that-server-is-on-fire for usage.
#
###########

echo "installing perf..."
sudo yum install -y perf

echo "fixing file perms..."
sudo chown root /tmp/perf-*.map

DUR=DURATION # this is replaced by profile.sh
PIDS=$(PID_MATCHER) # this is replaced by profile.sh
echo "collecting info for $DUR seconds..."
echo "collecting info on $PIDS..."
sudo perf record -F 99 -o perf.data -p $PIDS -g -- sleep $DUR

echo "running perf..."
sudo perf script -i perf.data > out.nodestacks01

echo "cloning flamegraph..."
git clone --depth 1 http://github.com/brendangregg/FlameGraph
cd FlameGraph

echo "creating flamegraph..."
./stackcollapse-perf.pl < ../out.nodestacks01 | ./flamegraph.pl > ../flame.svg