Author: pferraro Date: 2009-05-19 11:37:11 -0400 (Tue, 19 May 2009) New Revision: 2441 Modified: trunk/mod_cluster/src/demo/java/org/jboss/modcluster/demo/servlet/HeapMemoryLoadServlet.java Log: Change default reserve ratio to 90%, allow ability to configure Modified: trunk/mod_cluster/src/demo/java/org/jboss/modcluster/demo/servlet/HeapMemoryLoadServlet.java =================================================================== --- trunk/mod_cluster/src/demo/java/org/jboss/modcluster/demo/servlet/HeapMemoryLoadServlet.java 2009-05-18 22:02:04 UTC (rev 2440) +++ trunk/mod_cluster/src/demo/java/org/jboss/modcluster/demo/servlet/HeapMemoryLoadServlet.java 2009-05-19 15:37:11 UTC (rev 2441) @@ -42,6 +42,9 @@ private static final long serialVersionUID = -8183119455180366670L; private static Logger log = Logger.getLogger(HeapMemoryLoadServlet.class); + private static final String RATIO = "ratio"; + private static final String DEFAULT_RATIO = "0.9"; + private static final int MB = 1024 * 1024; /** @@ -52,7 +55,8 @@ protected void service(HttpServletRequest request, HttpServletResponse response) throws IOException { int duration = Integer.parseInt(this.getParameter(request, DURATION, DEFAULT_DURATION)) * 1000; - + float ratio = Float.parseFloat(this.getParameter(request, RATIO, DEFAULT_RATIO)); + System.gc(); MemoryUsage usage = ManagementFactory.getMemoryMXBean().getHeapMemoryUsage(); @@ -61,12 +65,11 @@ long total = (max >= 0) ? max : usage.getCommitted(); long free = total - usage.getUsed(); - // Reserve half the available free memory - long reserve = free / 2; + long reserve = (long) (free * ratio); log.info((total / MB) + "MB total memory"); log.info((free / MB) + "MB free memory"); - log.info("Reserving " + (reserve / MB) + "MB of memory"); + log.info("Reserving " + (reserve / MB) + "MB (" + ((int) (ratio * 100)) + "%) of memory"); List<Object> list = new ArrayList<Object>(2);