JVM内存优化-jemalloc

xiaohua10092026-09-13 10:32

一、修改描述问价

manifest中添加jemalloc

yaml 复制代码

autodeploy:
    hulkos: centos7 #使用centos7镜像作为运行时基础镜像
    tools:
      mt_oraclejdk: 17
      jemalloc:# 可以指定版本也可以什么都不写
    targetDir: /opt/meituan/apps/waimai_service_productquery_server/work
    run: sh deploy/run.sh
    check: sh /opt/meituan/apps/waimai_service_productquery_server/work/deploy/check.sh
    checkRetry: 70 #后面下掉，加默认值为1
    checkInterval: 10s #后面下掉

二、脚本根据环境变量加载

run.sh-配置

powershell 复制代码

JEMALLOC_ENV=''
if [[ -f /usr/lib64/libjemalloc.so.2 && "$JEMALLOC_ENABLED" == "true" ]]; then
    JEMALLOC_ENV='env LD_PRELOAD=/usr/lib64/libjemalloc.so.2 MALLOC_CONF=background_thread:true,dirty_decay_ms:600000,muzzy_decay_ms:600000,metadata_thp:always'
    echo "jemalloc 开启: LD_PRELOAD=/usr/lib64/libjemalloc.so.2 MALLOC_CONF=background_thread:true,dirty_decay_ms:600000,muzzy_decay_ms:600000,metadata_thp:always"
fi

run.sh-执行

注意：$JEMALLOC_ENV 不要放在/usr/local/java17/bin/java后面，不然汇报env启动类找不到

powershell 复制代码

exec $JEMALLOC_ENV /usr/local/java17/bin/java $VM_PARAM -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/var/xxx/logs/appkey.heaperr.log.`date "+%Y%m%d%H%M%S"` -Denvironment=$ENVIRONMENT -Xloggc:/var/xxx/logs/appkey.gc.log.`date "+%Y%m%d%H%M%S"` -Dapp.key=appkey -Dapp.host=$HOST_NAME -Dapp.ip=$HOST_IP -Dapp.port=9000 -Dfile.encoding=utf8 -Dworkdir=$WORKDIR -cp $WORKDIR/classes:`find $WORKDIR/lib -name "*.jar" -printf "%p:"` appkey.boot.Boot >> /var/sankuai/logs/$LOGFILE 2>&1