On Wed, 2015-10-07 at 07:03 -0300, Eric Torti wrote: > I'm sorry to diverge this thread a little bit. But could please point me to > resources that explain deeply how this process of OS using the non-java > memory to cache index data?
http://blog.thetaphi.de/2012/07/use-lucenes-mmapdirectory-on-64bit.html Shawn Heisey: > > Whatever RAM is left over after you give 12GB to Java for Solr will be > > used automatically by the operating system to cache index data on the > > disk. Solr is completely reliant on that caching for good performance. > > I'm puzzled as to why the physical memory of solr's host machine is always > used up and I think some resources on that would help me understand it. It is not used up as such: Add "Disk cache" and "Free space" (or whatever your monitoring tool calls them) and you will have the amount of memory available for new processes. If you start a new and memory-hungry process, it will take the memory from the free pool first, then from the disk cache. - Toke Eskildsen, State and University Library, Denmark
