Here's a great intro to the garbage collection options: http://www.lucidimagination.com/blog/2009/09/19/java-garbage-collection-boot-camp-draft/
@Ganesh: The issue with 64 bit isn't really performance, it's that you can't allocate much of your memory to the JVM. So by definition your performance will tank much earlier with a 32-bit JVM no matter what physical hardware you're running on because you're constrained by how much of the physical memory you *can* use. Best Erick On Mon, Dec 13, 2010 at 6:33 AM, William Newport <bi...@billynewport.com>wrote: > I've used 30-35gb heaps and it is painful. > > Sent from my iPhone > > On Dec 13, 2010, at 2:16 AM, "Danil ŢORIN" <torin...@gmail.com> wrote: > > > GC times on large heaps are pretty painfull right now (haven't tried > > G1 collector, knowledgeable people : please advise) > > > > Also it's very dependent on your index and query pattern, so you could > > improve it by using some -XX magic. > > > > My recommendation is to scale horizontally (spit index into shards), > > this way you'll be able to scale up much easier than moving to even > > beefier server. > > Initially if your server is big enough, you may host all your shards > > on it, just in separate jvms. > > > > If you are thinking on BIG indexes, you probably don't want to loose > > them, so you also must think of replication, standbys and so on. > > And from my experience overall cost (for same availability) is cheaper > > when you use many smaller servers than few large ones. > > > > On Mon, Dec 13, 2010 at 09:01, Ganesh <emailg...@yahoo.co.in> wrote: > >> Have you tried using Lucene in 64 Bit with more than 8 GB RAM. > >> > >> Regards > >> Ganesh > >> > >> ----- Original Message ----- > >> From: "Pradeep Singh" <pksing...@gmail.com> > >> To: <java-user@lucene.apache.org> > >> Sent: Monday, December 13, 2010 12:16 PM > >> Subject: Re: Scale up design > >> > >> > >>> 8GB is used on laptops. For servers you need more. > >>> > >>> On Sun, Dec 12, 2010 at 10:25 PM, Ganesh <emailg...@yahoo.co.in> > wrote: > >>> > >>>> Hello all, > >>>> > >>>> I know little bit about scale out design, Sharding the database across > >>>> systems. Is any one in this group tried Scale up architecture? I think > to > >>>> scale up, we need to use 64 bit. How about the Lucene performance in > 64 bit? > >>>> Whether we could use 8 GB RAM completely? > >>>> > >>>> Could any share their thoughts on this. > >>>> > >>>> Regards > >>>> Ganesh > >>>> Send free SMS to your Friends on Mobile from your Yahoo! Messenger. > >>>> Download Now! http://messenger.yahoo.com/download.php > >>>> > >>>> --------------------------------------------------------------------- > >>>> To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > >>>> For additional commands, e-mail: java-user-h...@lucene.apache.org > >>>> > >>>> > >>> > >> Send free SMS to your Friends on Mobile from your Yahoo! Messenger. > Download Now! http://messenger.yahoo.com/download.php > >> > >> --------------------------------------------------------------------- > >> To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > >> For additional commands, e-mail: java-user-h...@lucene.apache.org > >> > >> > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > > For additional commands, e-mail: java-user-h...@lucene.apache.org > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > For additional commands, e-mail: java-user-h...@lucene.apache.org > >
