package com.alibaba.druid.stat;
import java.lang.management.ManagementFactory;
import java.text.NumberFormat;
import junit.framework.TestCase;
public class HistogramMemoryTest extends TestCase {
public void test_0() throws Exception {
long memoryStart = ManagementFactory.getMemoryMXBean().getHeapMemoryUsage().getUsed();
final int COUNT = 1024 * 1;
Object[] items = new Object[COUNT];
for (int i = 0; i < COUNT; ++i) {
items[i] = new JdbcSqlStat("");
// items[i] = Histogram.makeHistogram(20);
}
long memoryEnd = ManagementFactory.getMemoryMXBean().getHeapMemoryUsage().getUsed();
System.out.println("memory used : " + NumberFormat.getInstance().format(memoryEnd - memoryStart));
}
}