[jboss-jira] [JBoss JIRA] (WFLY-4681) Reevaluation of java memory settings

[ https://issues.jboss.org/browse/WFLY-4681?page=com.atlassian.jira.plugin.... ] Sanne Grinovero commented on WFLY-4681: --------------------------------------- Hello all, I've been checking the GC logs generated by starting WildFly 10.0.0.CR5 in standalone mode, and I can see the metaspace is being exausted several times, which triggers full GCs before the JVM decides to scale up the metaspace. By setting {{-XX:MetaspaceSize=64m}} I do benefit from a ~15% faster boot time. According to JConsole a just-started WildFly instance requires approximately 55MB of metaspace, while the default is around 20MB according to {{-XX:+PrintFlagsFinal}} on my machine (JDK8, 64bit linux). So I'd suggest setting this to 64mb as a starting point, it will of course scale up automatically depending of deployed application needs but this is the least it needs at boot to prevent it from chocking on those full GCs. -- This message was sent by Atlassian JIRA (v6.4.11#64026)