> On 30 Aug 2017, at 01:13, Caldarale, Charles R <chuck.caldar...@unisys.com> > wrote: > > Is it possible that the system is getting into swapping? The heap has been > set to 20 GiB, but I didn't see any mention of how much actual memory the > system has. Do you really need a 20 GiB heap? Sometimes smaller is better. > Might also want to try turning off UseHugeTLBFS.
No swap is used on the server; it has 32GB of ram. I think the heap usage is at most 15/16GB… in the past I tried various heap sizes and I think this size works well. > > I wonder if there are heap objects tied up due to dead but not collected > metaspace items; when metaspace is GC'd, the heap usage might well shrink > also. (This might be a G1GC bug, but that seems unlikely.) Perhaps the RMI > mechanism (which I haven't looked at in many years) is searching an > ever-growing set of soft/weak references that are removed when metaspace is > collected. A smaller heap might help there. Thanks for your suggestions --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
