asmhatre
c7eccd1db5
Custom OrderProcessed event, CPU/allocation/lock workloads, a diagnostic endpoint over the JVM's live FlightRecorder state, a JUnit test using the jdk.jfr.Recording API, and nine captured recordings (flagship, mid-flight snapshot, isolated vs concurrent threshold comparisons, and a real dump+stop duplication bug) with their docs/output/*.txt transcripts.
55 lines
2.6 KiB
Bash
Executable File
55 lines
2.6 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Regenerates every file under docs/output/.
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#
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# 01 comes from the JUnit test suite (jdk.jfr.Recording API, in-process).
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# 02-10 come from starting the real app and driving it with jcmd + curl,
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# exactly as described in the post. 11 comes from a standalone driver class.
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#
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# This script assumes JAVA_HOME points at a JDK with jfr/jcmd on PATH, and
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# that no other jfr-demo.jar is already running on port 8080.
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set -euo pipefail
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cd "$(dirname "$0")/.."
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echo "== 01: in-process custom-event test =="
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mvn -q -B test
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echo "== 11: broken-event-pattern standalone demo =="
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mvn -q -B -DskipTests package
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java -cp target/classes com.ankurm.jfr.events.BrokenEventPatternDemo \
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| tee /tmp/broken-event-output.txt
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# docs/output/11-broken-event-pattern.txt is written by hand from this run's
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# output plus commentary; regenerate it manually if the numbers change.
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echo "== starting app for the live jcmd-driven captures =="
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scripts/run.sh -d
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PID=$(ps -eo pid,cmd | grep '[j]fr-demo.jar' | awk '{print $1}' | head -1)
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echo "app pid: $PID"
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echo "== 02-10: live recording capture =="
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scripts/capture-jfr.sh "$PID"
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# docs/output/02 through 10 are written by hand from the jfr print/summary
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# output of recordings/live-demo.jfr and the comparison recordings below;
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# regenerate them manually if the workload or JDK version changes.
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echo "== threshold-comparison recordings (docs/output/07, 08) =="
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jcmd "$PID" JFR.start name=soloDefault settings=default
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for i in $(seq 1 40); do curl -s "localhost:8080/api/lock/contend?workers=2&holdMillis=12" -o /dev/null; done
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jcmd "$PID" JFR.stop name=soloDefault filename="$(pwd)/recordings/solo-default.jfr"
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jcmd "$PID" JFR.start name=soloProfile settings=profile
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for i in $(seq 1 40); do curl -s "localhost:8080/api/lock/contend?workers=2&holdMillis=12" -o /dev/null; done
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jcmd "$PID" JFR.stop name=soloProfile filename="$(pwd)/recordings/solo-profile.jfr"
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jcmd "$PID" JFR.start name=soloDefault2 settings=default
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for i in $(seq 1 10); do curl -s "localhost:8080/api/lock/contend?workers=2&holdMillis=35" -o /dev/null; done
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jcmd "$PID" JFR.stop name=soloDefault2 filename="$(pwd)/recordings/solo-default-longhold.jfr"
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jcmd "$PID" JFR.start name=cmpA settings=default
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jcmd "$PID" JFR.start name=cmpB settings=profile
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for i in $(seq 1 40); do curl -s "localhost:8080/api/lock/contend?workers=2&holdMillis=12" -o /dev/null; done
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jcmd "$PID" JFR.stop name=cmpA filename="$(pwd)/recordings/compare-default.jfr"
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jcmd "$PID" JFR.stop name=cmpB filename="$(pwd)/recordings/compare-profile.jfr"
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for p in $(ps -eo pid,cmd | grep '[j]fr-demo.jar' | awk '{print $1}'); do kill -9 "$p"; done
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echo "all recordings regenerated under recordings/"
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