Copy over dd_jvm_stats.sh from #939
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Tyler Benson
parent
28f4038122
commit
1ace12e187
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#!/usr/bin/env bash
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set -e
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OUTPUT_ROOT=$(pwd)
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# Thread dump interval defaults to 10 mins
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THREAD_DUMP_INTERVAL_SECS=600
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# Heap dump interval defaults to 30 mins
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HEAP_DUMP_INTERVAL_SECS=1800
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# GC usage interval defaults to 30 secs
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GC_INTERVAL_SECS=30
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# Runtime stats interval defaults to 10 secs
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RUNTIME_INTERVAL_SECS=10
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# Default runs continuously
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STOP_AFTER_SECS=0
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function usage {
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echo "Usage: ./dd_jvm_stats --pid <PID> [--STOP_AFTER_SECS <SECS:0>] [--runtime-interval <SECS:10>] [--thread-interval <SECS:600>] [--heap-interval <SECS:1800>] [--gc-interval <SECS:30>] [--runtime-interval <SECS:10>] [--output <PATH:./>]"
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}
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while [[ "$1" != "" ]]; do
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case $1 in
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--pid ) shift
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PROCESS_IDENTIFIER=$1
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;;
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--output ) shift
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OUTPUT_ROOT=$1
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;;
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--thread-interval ) shift
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THREAD_DUMP_INTERVAL_SECS=$1
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;;
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--heap-interval ) shift
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HEAP_DUMP_INTERVAL_SECS=$1
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;;
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--gc-interval ) shift
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GC_INTERVAL_SECS=$1
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;;
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--runtime-interval ) shift
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RUNTIME_INTERVAL_SECS=$1
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;;
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--stop-after ) shift
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STOP_AFTER_SECS=$1
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;;
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--help ) usage
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exit
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;;
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* ) usage
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exit 1
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esac
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shift
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done
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# At least PID has to be provided
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if [[ -z "$PROCESS_IDENTIFIER" ]]
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then
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usage
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echo "Provide the correct process id:"
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jcmd
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exit 1
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fi
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HUMAN_READABLE_FORMAT='+%Y-%m-%d %H:%M:%S'
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FILESYSTEM_READABLE_FORMAT='+%Y%m%d_%H%M%S'
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OUTPUT_FOLDER="${OUTPUT_ROOT}/monitoring_session_started_$(date "$FILESYSTEM_READABLE_FORMAT")"
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THREAD_DUMP_FOLDER="$OUTPUT_FOLDER/thread_dumps"
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HEAP_DUMP_FOLDER="$OUTPUT_FOLDER/heap_dumps"
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GC_STATS_FILE="$OUTPUT_FOLDER/gc_stats.csv"
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RUNTIME_STATS_FILE="$OUTPUT_FOLDER/runtime_stats.csv"
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JVM_INFO_FILE="$OUTPUT_FOLDER/jvm_info.txt"
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# Preparing output folders
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echo "Data will be saved to $OUTPUT_FOLDER"
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mkdir -p ${OUTPUT_FOLDER}
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mkdir -p ${THREAD_DUMP_FOLDER}
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mkdir -p ${HEAP_DUMP_FOLDER}
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# Dumping JVM INFO
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echo "JVM version $(jcmd ${PROCESS_IDENTIFIER} VM.version)" > ${JVM_INFO_FILE}
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echo "" >> ${JVM_INFO_FILE}
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echo "JVM uptime $(jcmd ${PROCESS_IDENTIFIER} VM.uptime)" >> ${JVM_INFO_FILE}
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echo "" >> ${JVM_INFO_FILE}
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echo "JVM command line $(jcmd ${PROCESS_IDENTIFIER} VM.command_line)" >> ${JVM_INFO_FILE}
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echo "" >> ${JVM_INFO_FILE}
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# Initializing files
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echo "Date,CPU%,S0C,S1C,S0U,S1U,EC,EU,OC,OU,MC,MU,CCSC,CCSU,YGC,YGCT,FGC,FGCT,GCT" > ${RUNTIME_STATS_FILE}
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START=$(date +"%s")
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GC_LOGS_FILE=$(jcmd ${PROCESS_IDENTIFIER} VM.command_line | grep jvm_args | sed 's/^.*Xlog[:]*gc:\([^\s]*\) .*$/\1/')
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if [[ -z "$GC_LOGS_FILE" ]]; then
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echo "GC logs file was not found, did you set jvm args for GC logs?: for JDK 9+ '-Xlog:gc:/path/to/gc.log', JDK 8 '-Xloggc:/path/to/gc.log -XX:+PrintGC -XX:+PrintGCTimeStamps -XX:+PrintGCDateStamps'"
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else
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echo "Found GC logs file: $GC_LOGS_FILE"
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fi
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LAST_GC=0
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LAST_CPU=0
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LAST_RUNTIME=0
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LAST_HEAP=${START}
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LAST_THREAD=${START}
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function tick() {
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NOW=$(date +"%s")
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NOW_HUMAN=$(date "${HUMAN_READABLE_FORMAT}")
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NOW_FILESYSTEM=$(date "${FILESYSTEM_READABLE_FORMAT}")
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# We can set a stop after a number of seconds
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if [[ "$STOP_AFTER_SECS" -gt "0" ]] && [[ "$NOW" -gt $(( $START + $STOP_AFTER_SECS )) ]]; then
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echo "Maximum running time reached: job completed successfully."
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exit 0
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fi
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# Runtime live
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if [[ "$NOW" -ge $(( $LAST_RUNTIME + $RUNTIME_INTERVAL_SECS )) ]]; then
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CPU_USAGE=$(ps -p ${PROCESS_IDENTIFIER} -o %cpu | grep '\.')
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MEMORY_USAGE=$(jstat -gc ${PROCESS_IDENTIFIER} | grep '\.' | sed -E 's/ +/,/g')
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echo "$NOW_HUMAN,$CPU_USAGE,$MEMORY_USAGE" >> ${RUNTIME_STATS_FILE}
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LAST_RUNTIME=${NOW}
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fi
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# GC logs
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if [[ "$NOW" -ge $(( $LAST_GC + $GC_INTERVAL_SECS )) ]] && [[ ! -z "$GC_LOGS_FILE" ]]; then
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cp ${GC_LOGS_FILE} ${GC_STATS_FILE}
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LAST_GC=${NOW}
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fi
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# Thread dump
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if [[ "$NOW" -ge $(( $LAST_THREAD + $THREAD_DUMP_INTERVAL_SECS )) ]]; then
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THREAD_FILE="${THREAD_DUMP_FOLDER}/thread-dump-${NOW_FILESYSTEM}"
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jcmd ${PROCESS_IDENTIFIER} Thread.print > ${THREAD_FILE}
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LAST_THREAD=${NOW}
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echo "${NOW_HUMAN} - Thread dump saved to: $THREAD_FILE"
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fi
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# Heap dump
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if [[ "$NOW" -ge $(( $LAST_HEAP + $HEAP_DUMP_INTERVAL_SECS )) ]]; then
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HEAP_FILE="${HEAP_DUMP_FOLDER}/heap-dump-${NOW_FILESYSTEM}.hprof"
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jcmd ${PROCESS_IDENTIFIER} GC.heap_dump ${HEAP_FILE}
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LAST_HEAP=${NOW}
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echo "${NOW_HUMAN} - Heap dump saved to: $HEAP_FILE"
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fi
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}
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while sleep 1; do tick; done
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