On Fri, Sep 25, 2009 at 2:52 PM, Fuad Efendi <f...@efendi.ca> wrote: > Lowering heap helps GC?
Yes. In general, lowering the heap can help or hurt. Hurt: if one is running very low on memory, GC will be working harder all of the time trying to find more memory and the % of time that GC takes can go up. Help: if one has massive heaps, full GCs may not happen as frequently, but when they do they can be larger and cause more of a problem. For many apps, a .2 second pause every minute is preferable to a 10 second pause every hour. And of course the other reason to lower the heap size *if* you don't need it that big is to leave more memory for other stuff, and for the OS itself to cache the index files. -Yonik http://www.lucidimagination.com
