查看jvm内存使用情况的jsp页面

<%
Runtime lRuntime = Runtime.getRuntime();
out.println("*** BEGIN MEMORY STATISTICS ***
");
out.println("Free  Memory: "+lRuntime.freeMemory()/1024/1024+"M
");
out.println("Max   Memory: "+lRuntime.maxMemory()/1024/1024+"M
");
out.println("Total Memory: "+lRuntime.totalMemory()/1024/1024+"M
");
out.println("Available Processors : "+lRuntime.availableProcessors()+"
");
out.println("*** END MEMORY STATISTICS ***");
%>

效果图：

*** BEGIN MEMORY STATISTICS ***
Free Memory: 448M
Max Memory: 1016M
Total Memory: 508M
Available Processors : 2
*** END MEMORY STATISTICS ***