We use EJBs and servlets. The buffers for leaked connections show bits of both Ajax and Faces, but I've so far been unable to chase them back to a source (I need to go looking for a URL...). The buffers are fairly empty of helpful content - mostly tables with generated IDs I don't recognize, causing me to think they don't come from the Ajax pages that I help maintain. I'm not aware of us using any native code for JBoss, We do have a mix of modules, but not all of them are actively maintained. A quick search didn't turn up the native keyword. For Async IO, I'm familiar with it as a concept, but I also see it's a discrete module. As a concept I've never seen where we applied it to transactions, but it's at least possible it sees use. As for Async IO the module, the same answer applies. I have never seen it used, but can't vouch that we don't use it. If it helps, we migrated up from JBoss 7 with minimal changes to our configuration, primarily looking to get some of the benefits from Undertow / nio. The module I'm most concerned about would have been written largely on JBoss 7, and will likely have limited interaction with a database inside JBoss. This module makes heavy use of Servlets. //EricP -----Original Message----- From: Stuart Douglas [mailto:sdouglas@redhat.com] Sent: Sunday, May 17, 2015 5:57 PM To: Eric Peters Cc: undertow-dev(a)lists.jboss.org Subject: Re: [undertow-dev] Buffers still leaking via lingering timeouts Can you provide some more details about what your app is doing? In particular are you using Servlet, or the native API, and are you using async IO? Stuart ----- Original Message ----- Click https://www.mailcontrol.com/sr/AB3ppeXhgTbGX2PQPOmvUtXHXnVjuGgHwP!E8ROfG7... to report this email as spam.