Since you told the context is rather huge, have you checked gc times? A long running full gc can block the machine completely resulting in the up/down behaviour from outside. GC options depend on JVM version I use:
export JAVA_OPTS="$JAVA_OPTS -XX:+DisableExplicitGC -verbose:GC -XX:+PrintGCDetails -XX:+PrintGCDateStamps -Xloggc:logs/gc.log " alternatively moskito would also show you avg response times and gcs ;-) regards Leon On Fri, Aug 18, 2017 at 11:13 PM, James H. H. Lampert < jam...@touchtonecorp.com> wrote: > On 8/18/17, 1:41 PM, Christopher Schultz wrote: > > You say that you aren't running it as a service. How then are you >> running Tomcat? >> > > startup.sh and shutdown.sh from a command line. > > Just starting catalina.sh from the CLI directly? If >> you run it in the background, are you running it with nohup? If not, >> your console closing might be killing the Java process. Hmm... but you >> said that Tomcat does in fact shut down when you login and stop it. >> Probably not a SIGHUP killing the process. >> > > When it's unresponsive, it's apparently still running. But it's not just > our context that's unresponsive; manager is also unresponsive. And we run > with autodeploy disabled: aside from being a huge context that takes a > while to deploy, it's also one that often needs to be stopped, have > instance-specific values set in its web.inf, and then get restarted, before > it can function normally. > > If you stop Tomcat (when it's unresponsive), then re-start it, does it >> appear to work correctly right away, or do you need to do anything >> else to get it to work again? >> > > It opens up the port immediately, and serves a sign-on page for our webapp > as soon as it's had a chance to initialize. > > I looked in the latest localhost access log, and no sign of anything > suspicious there. > > -- > JHHL > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > >
