Rapid heap memory consumption (which are not garbage collected) *can* be caused by unfinished Spring Webflow flow sessions; this is something we have observed. However, when looking at your memory dump, the majority of the instances (and size) is being claimed by the GoogleAccountService. Perhaps this is not marked as a singleton instance?
On Tue, Dec 2, 2014 at 6:38 PM, David A. Kovacic <[email protected]> wrote: > All, > > Yesterday evening one of our CAS 4.0.0 servers went from under a GB of > heap usage to 3GB in a matter of about 10 minutes. The end result was that > again the SSO service died (one server with a heap memory OoM error and the > other trying to replicate the ehcache to the dead server. This was > definitely not a memory leak issue as the servers had been restarted only > earlier that morning, so they had only been up for about 17 hours or so. > Out system monitors also indicated that the memory usage rather suddenly > skyrocketed (over the course of about 20 minutes) so we suspect that the > memory consumption is a symptom of some other issue. > > We have a heap dump but I am having a bit of trouble trying to analyze it > with jvisualvm as I have never used the tool before. If I am interpreting > the dump correctly, it appears that tickets only play a very small part of > the overall memory usage (see screen shot). > > > > Has anyone heard or experienced anything like what we are seeing? This is > becoming increasingly frustrating as every time we think we have the issues > resolved and turn our attention elsewhere one server or the other crashes > and takes the service down with it. > > Dave > > -- > You are currently subscribed to [email protected] as: > [email protected] > To unsubscribe, change settings or access archives, see > http://www.ja-sig.org/wiki/display/JSG/cas-user > > -- Erik-Paul Dittmer T: REDACTED Visit us at http://www.digitalmisfits.com - - - - - - - - - - - - - - - - - - - - - - - - - - Digital Misfits does not accept any liability for any errors, omissions, delays of receipt or viruses in the contents of this message which arise as a result of e-mail transmission. -- You are currently subscribed to [email protected] as: [email protected] To unsubscribe, change settings or access archives, see http://www.ja-sig.org/wiki/display/JSG/cas-user
