If there are "gaps" in the test charts (see example error below), it is likely that the database needs to be optimized.
Please also note that it is highly recommended that the below procedure is run after a database repair (db_repir.sh or db_repair.cmd)
To do so where <TRAVERSE_HOME> is the Traverse installation directory,
cd <TRAVERSE_HOME> utils\db_optimize.pl --run
cd <TRAVERSE_HOME>utils/db_optimize.pl --run
one may see an error message such as the below:
2014-11-08 07:02:07,703 m.MonitorServer[Monitor Server]: (ERROR\) Warning: too many elements on aggregation-writer Queue: 157993 elements with 39158 testConfigs, clearing out queue