Memory usage

A few notes about memory usage

Introduction

The BIMserver uses quite some memory, this page will explain how it's used.

BerkeleyDB Cache

BerkeleyDB (the database engine the BIMserver uses) has a setting for the amount of heap memory it can use for caching (which will speedup reads), we have set it to 25%. So if you give your BIMserver 4GB of heap, it will soon be using 1GB of memory for caching. You can change this and other parameters only if you build your own version of BIMserver

See [http://docs.oracle.com/cd/E17277_02/html/java/com/sleepycat/je/EnvironmentMutableConfig.html#setCachePercent(int) the BerkeleyDB documentation] for more information

Compressed Oops

Running a 64bit system with less than 32GB of memory, you can use [http://docs.oracle.com/javase/7/docs/technotes/guides/vm/performance-enhancements-7.html#compressedOop Compressed Ooops].

Update: This is by default enabled on recent OpenJDK 6 and 7 implementations, so you probably won't have to do anything.