JBoss DB connection pool monitoring messages response delay

Issue

When using JBoss service which is using logging-monitor.jar to monitor our database connection pool.But sometimes the messages response delayed.

Service:Uploaded in this article.(lis-ds-monitor-service.zip)

Response messages:

2012-02-21 15:03:57,104 INFO  [jca.lis] 11,89,24,6029,6005,28,11
2012-02-21 15:04:07,105 INFO  [jca.lis] 11,89,24,6029,6005,28,11
2012-02-21 15:04:17,104 INFO  [jca.lis] 10,90,24,6029,6005,28,10
2012-02-21 15:04:27,104 INFO  [jca.lis] 10,90,24,6029,6005,28,10
2012-02-21 15:04:37,104 INFO  [jca.lis] 10,90,24,6029,6005,28,10
2012-02-21 15:04:47,114 INFO  [jca.lis] 11,89,24,6029,6005,28,11
2012-02-21 15:04:58,770 INFO  [jca.lis] 10,90,24,6029,6005,28,10
2012-02-21 15:05:15,558 INFO  [jca.lis] 12,88,24,6029,6005,28,12
2012-02-21 15:05:25,560 INFO  [jca.lis] 17,83,29,6034,6005,29,17
2012-02-21 15:05:40,985 INFO  [jca.lis] 22,78,35,6040,6005,34,23
2012-02-21 15:05:58,278 INFO  [jca.lis] 19,81,45,6050,6005,44,19
2012-02-21 15:06:13,836 INFO  [jca.lis] 20,80,45,6050,6005,44,20
2012-02-21 15:06:31,040 INFO  [jca.lis] 21,79,45,6050,6005,44,21
2012-02-21 15:06:46,252 INFO  [jca.lis] 27,73,45,6050,6005,44,27
2012-02-21 15:07:02,797 INFO  [jca.lis] 19,81,45,6050,6005,44,19
2012-02-21 15:07:17,912 INFO  [jca.lis] 24,76,45,6050,6005,44,24
2012-02-21 15:07:34,421 INFO  [jca.lis] 30,70,45,6050,6005,44,30
2012-02-21 15:07:49,420 INFO  [jca.lis] 31,69,45,6050,6005,44,31
2012-02-21 15:08:05,730 INFO  [jca.lis] 41,57,45,6051,6006,47,41
2012-02-21 15:08:20,780 INFO  [jca.lis] 41,58,52,6058,6006,52,41
2012-02-21 15:08:37,442 INFO  [jca.lis] 36,63,52,6058,6006,52,38
2012-02-21 15:08:52,228 INFO  [jca.lis] 45,55,52,6058,6006,52,45
2012-02-21 15:09:08,720 INFO  [jca.lis] 49,34,52,6058,6006,68,49
2012-02-21 15:09:24,105 INFO  [jca.lis] 58,37,69,6075,6006,73,57
2012-02-21 15:09:40,747 INFO  [jca.lis] 68,16,70,6077,6007,85,69
2012-02-21 15:09:56,256 INFO  [jca.lis] 56,25,73,6080,6007,91,56