1. performance tuning

zkweb/build.gradle

@@ -36,6 +36,7 @@ task createDockerFile(type: Dockerfile,dependsOn: prepareDockerBuild){
     destFile=project.file("${buildDir}/docker/Dockerfile")
     from "${baseImgName}:${baseImgTag}"
     label(['Maintainer':'richard_shih@wanhai.com'])
+    environmentVariable('JAVA_OPTS','-Xms64m -Xmx384m -XX:MetaspaceSize=64M -XX:MaxMetaspaceSize=128m -XX:MaxDirectMemorySize=512m -XX:+UseParallelGC -Djava.net.preferIPv4Stack=true -Djboss.modules.system.pkgs=$JBOSS_MODULES_SYSTEM_PKGS -Djava.awt.headless=true')
     copyFile "$war.archiveName",'${JBOSS_HOME}/standalone/deployments'
 }