Memory limits info: http://www.oracle.com/technetwork/java/hotspotfaq-138619.html#gc_heap_32bit
-d64 usage info: <http://stackoverflow.com/questions/1443677/what-impact-if-any-does-the-d64-swtich-have-on-sun-jvm-resident-memory-usage> Steve > -----Original Message----- > From: Dennis Gearon [mailto:gear...@sbcglobal.net] > Sent: Thursday, October 21, 2010 1:08 PM > To: solr-user@lucene.apache.org > Subject: Re: RAM increase > > Everything ovger ~3.7 3.7GB RAM (2^32, use your calculator) needs 64 bit > addressing. > > Dennis Gearon > > Signature Warning > ---------------- > It is always a good idea to learn from your own mistakes. It is usually a > better idea to learn from others’ mistakes, so you do not have to make > them yourself. from > 'http://blogs.techrepublic.com.com/security/?p=4501&tag=nl.e036' > > EARTH has a Right To Life, > otherwise we all die. > > > --- On Thu, 10/21/10, Jonathan Rochkind <rochk...@jhu.edu> wrote: > > > From: Jonathan Rochkind <rochk...@jhu.edu> > > Subject: Re: RAM increase > > To: "solr-user@lucene.apache.org" <solr-user@lucene.apache.org> > > Date: Thursday, October 21, 2010, 9:56 AM > > Jean-Sebastien Vachon wrote: > > > You will also need to switch to a 64 bits JVM > > > You might have to add the `-d64` flag as well as the > > `-Xms` and `-Xmx` > > > > > > > > I've actually had no luck googling what's up with the > > -d64. Can you point me to any documentation on what > > effect it has, and on particular on what the boundary -Xmx > > size is that requires -d64? > > > > Jonathan > > > > > >
