content: package com.alibaba.druid.stat;
  
  import com.alibaba.druid.support.http.stat.WebURIStat;
  import junit.framework.TestCase;
  
  import java.lang.management.ManagementFactory;
  import java.text.NumberFormat;
  
  public class WebURIStatMemoryTest extends TestCase {
      public void test_0() throws Exception {
          WebURIStat item = new WebURIStat("");
          gc();
          long memoryStart = ManagementFactory.getMemoryMXBean().getHeapMemoryUsage().getUsed();
  
          final int COUNT = 1024 * 1024;
          WebURIStat[] items = new WebURIStat[COUNT];
          for (int i = 0; i < COUNT; ++i) {
              items[i] = new WebURIStat("");
              items[i].getProfiletat();
              // items[i] = Histogram.makeHistogram(20);
          }
  
          long memoryEnd = ManagementFactory.getMemoryMXBean().getHeapMemoryUsage().getUsed();
  
          System.out.println("memory used : " + NumberFormat.getInstance().format(memoryEnd - memoryStart));
      }
  
      private void gc() {
          for (int i = 0; i < 10; ++i) {
              System.gc();
          }
      }
  }
  