final int num = 100000;
            final Map<String, String> hmap = new HashMap<String, String>();
            final Map<String, String> cimap = new CaseInsensitiveMap<String>();

            long start = System.currentTimeMillis();
            for (int i = 0; i < num; i++) {
                hmap.put("a" + String.valueOf(i), null);
            }

    @Test
    public void testPerformance() throws Exception {
        int num = 100000;
        Map<String, Object> hmap = new HashMap<String, Object>();
        Map<String, Object> amap = new ArrayMap<String, Object>();

        long start = System.currentTimeMillis();
        for (int i = 0; i < num; i++) {
            hmap.put(String.valueOf(i), null);
        }