I just skimmed your post, but have you seen: http://blog.thetaphi.de/2012/07/use-lucenes-mmapdirectory-on-64bit.html
MMapDirectory may be giving you a false sense of how much physical memory is actually being used. Best Erick On Mon, Oct 29, 2012 at 1:59 PM, Nicolai Scheer <nicolai.sch...@gmail.com> wrote: > Hi again! > > On 29 October 2012 18:39, Nicolai Scheer <sc...@planetavent.de> wrote: >> Hi! >> >> We're currently facing a strange memory issue we can't explain, so I'd >> like to kindly ask if anyone is able to shed a light an the behavour >> we encounter. >> >> We use a Solr 3.5 instance on a Windows Server 2008 machine equipped >> with 16GB of ram. >> The index uses 8 cores, 10 million documents, disk size of 180 GB in total. >> The machine is only used for searches, text extraction is done on another >> box. > [...] > > I should add which java version we're using: > > java -version > java version "1.6.0_23" > Java(TM) SE Runtime Environment (build 1.6.0_23-b05) > Java HotSpot(TM) 64-Bit Server VM (build 19.0-b09, mixed mode) > > Greetings > > Nico
