My Xmx and Xms are both 7.5GB. However, I never see the heap usage reach past 5.5. Think it is still a good idea to increase the heap?
Thanks, Jason On Apr 2, 2:45 am, Peter Schuller <peter.schul...@infidyne.com> wrote: > > Previously, mark-and-sweep would run around 5.5GB, and would cut heap > > usage to 4GB. Now, it still runs at 5.5GB, but it shrinks all the way > > down to 2GB used. This behavior was consistent in every machine I > > increased read-concurrent on. > > So each full CMS cycles brings it down to 4 on a maximum heap size of > 5.5GB? Or are you using VM options such that Xms != Xmx? > > If 5.5 is the maximum heap size and you're at 4 gig after the > completion of a mark-and-sweep, I'd say it would be a good idea to > pre-emptively up the heap size a bit (or decreases memtables/key/row > caches). > > -- > / Peter Schuller
