hotspot-gc-dev Digest, Vol 24, Issue 6

Tony Printezis Antonios.Printezis at
Tue Jun 9 16:34:02 UTC 2009

We have a lot of customers that run on several GB on similar hardware 
and, with a bit of tuning, we can usually reduce GC overhead to well 
under 10%. Of course, if you're heap is _really_ tight, then I can see 
how the GC overhead would increase. GCs work best if they have enough 
"breathing room".


Dan Hicks wrote:
> IBM i and p boxes.  Running heaps of several GB on 4-16 ways.
> Paul Hohensee wrote:
>> I'm curious.  Which GC's can consume half the cpu cycles?  I'd 
>> believe it of Metronome's
>> real-time GC (because it's designed to work that way if necessary), 
>> but like Tony, I haven't
>> seen GC consume that much cpu in the wild.

| Tony Printezis, Staff Engineer    | Sun Microsystems Inc.          |
|                                   | MS BUR02-311                   |
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