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@ykubota ykubota/make.sh
Last active Oct 19, 2015

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ThreadRecorder + DeadLock 検知を試してみる
sudo dnf install -y --enablerepo="*debug*" hg net-snmp net-snmp-devel gcc gcc-c++ binutils binutils-devel maven ant java-1.8.0-openjdk java-1.8.0-openjdk-devel java-1.8.0-openjdk-debuginfo
hg clone http://icedtea.classpath.org/hg/heapstats
cd heapstats/
./configure; make agent
sed -e "s/thread_record_enable=false/thread_record_enable=true/" agent/heapstats.conf > agent/heapstats_threadrecorder.conf
cd agent/test/deadlock
javac DLSample.java
java -agentpath:../../src/libheapstats.so=../../heapstats_threadrecorder.conf DLSample 5
% java -agentpath:../../src/libheapstats.so=../../heapstats_threadrecorder.conf DLSample 5
heapstats INFO: heapstats_agent 1.1.1
heapstats INFO: Supported processor features: AVX
heapstats WARN: Could not find sun.misc.IoTrace class.
heapstats WARN: Turn off I/O recording.
heapstats INFO: Agent Attach Enable = true
heapstats INFO: SnapShot FileName = heapstats_snapshot.dat
heapstats INFO: Heap Log FileName = heapstats_log.csv
heapstats INFO: Archive FileName = heapstats_analyze.zip
heapstats INFO: Console Log FileName = None (output to console)
heapstats INFO: LogLevel = INFO
heapstats INFO: ReduceSnapShot = true
heapstats INFO: CollectRefTree = true
heapstats INFO: Trigger on FullGC = true
heapstats INFO: Trigger on DumpRequest = true
heapstats INFO: Deadlock check = true
heapstats INFO: Log trigger on Error = true
heapstats INFO: Log trigger on Signal = true
heapstats INFO: Log trigger on Deadlock = true
heapstats INFO: RankingOrder = delta
heapstats INFO: RankLevel = 5
heapstats INFO: AlertPercentage = 50 ( 458752000 bytes )
heapstats INFO: Java heap usage alert percentage = 95 ( 831 MB )
heapstats INFO: Metaspace usage alert threshold 0 MB
heapstats INFO: SnapShot interval = 0 sec
heapstats INFO: Log interval = 300 sec
heapstats INFO: First collect log = true
heapstats INFO: Signal for normal logging is DISABLED.
heapstats INFO: Signal for all logging = SIGUSR2
heapstats INFO: Signal for config reloading = SIGHUP
heapstats INFO: Thread recorder = true
heapstats INFO: Buffer size of thread recorder = 100 MB
heapstats INFO: Thread record file name = heapstats-thread-records.htr
heapstats INFO: Thread record I/O tracer = /usr/local/etc/iotracer/IoTrace.class
heapstats INFO: Send SNMP Trap = true
heapstats INFO: SNMP target = localhost
heapstats INFO: SNMP community = public
heapstats INFO: Temporary log directory = ./tmp
heapstats INFO: Archive command = "/usr/bin/zip %archivefile% -jr %logdir%"
heapstats INFO: Kill on Error = false
heapstats CRIT: ALERT(DEADLOCK): occurred deadlock. threadCount: 5, threadName: "Thread-2"
heapstats WARN: thread name: Thread-3, prio: 5
heapstats WARN: thread name: Thread-4, prio: 5
heapstats WARN: thread name: Thread-0, prio: 5
heapstats WARN: thread name: Thread-1, prio: 5
heapstats WARN: thread name: Thread-2, prio: 5
heapstats WARN: Couldn't open copy source file. cause: 許可がありません
heapstats WARN: Could not copy /var/log/messages cause: 許可がありません
heapstats WARN: Could not copy file: /proc/self/fd/1 cause: 無効な引数です
heapstats WARN: Could not copy file: /proc/self/fd/2 cause: 無効な引数です
adding: journalctl_-q_--all_--this-boot_--no-pager_-o_verbose.log (deflated 92%)
adding: envInfo.txt (deflated 68%)
adding: udp6 (deflated 63%)
adding: tcp6 (deflated 68%)
adding: sockowner (stored 0%)
adding: redhat-release (stored 0%)
adding: threaddump.txt (deflated 83%)
adding: status (deflated 63%)
adding: smaps (deflated 96%)
adding: tcp (deflated 59%)
adding: udp (deflated 61%)
adding: cmdline (deflated 12%)
adding: limits (deflated 78%)
heapstats INFO: Collecting log has been completed: /home/ykubota/tmp/heapstats/heapstats/agent/test/deadlock/heapstats_analyze151017213801.zip
heapstats INFO: Elapsed Time (in Take LogInfo): 0.110000 sec (user = 0.000000, sys = 0.010000)
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ykubota commented Oct 19, 2015

heapstats CRIT: ALERT(DEADLOCK): occurred deadlock. threadCount: 5, threadName: "Thread-2" の部分でデッドロック検知して詳細ログを取っている。root 権限じゃないので一部情報が取れてない(/var/log/messagesとか)

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ykubota commented Oct 19, 2015

ThreadRecorder の情報は heapstats-thread-records.htr .
ちょっと古いが下の HeapStatsFXAnalyzer の Thread Recorder パネルから読み込んで確認することができる。
https://github.com/ykubota/HeapStatsFXAnalyzer/releases/download/test/heapstats-analyzer-2.0-bin.zip

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