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#!/bin/bash
# Usage: ./gen.sh collected-stacks.txt
TMPSTACKS=/tmp/flamegraph-stacks-collapsed.txt
TMPPALETTE=/tmp/flamegraph-palette.map
./stackcollapse-jstack.pl $1 > $TMPSTACKS
# 1st run - hot: default
./flamegraph.pl --cp $TMPSTACKS > stacks.svg
# 2nd run - blue: I/O
cp palette.map $TMPPALETTE
cat $TMPPALETTE | grep -v '\.read' | grep -v '\.write' | grep -v 'socketRead' | grep -v 'socketWrite' | grep -v 'socketAccept' > palette.map
./flamegraph.pl --cp --colors=io $TMPSTACKS > stacks.svg
echo "Done! Now see the output in stacks.svg"
#!/bin/sh
# Usage: ./profile.sh pid output.txt
PROFILED_PID=$1
OUTPUT_FILE=$2
echo "Getting stacktraces from process $PROFILED_PID... Will stop on ^C or when the process exits."
rm -f "$OUTPUT_FILE"
while true; do
jstack "$PROFILED_PID" >> "$OUTPUT_FILE" && sleep 0.01 || break
done
echo
echo "Done! Stacks saved to $OUTPUT_FILE"
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