Returns the maximum number of objects to examine during each run (if any)
of the idle object evictor thread. When positive, the number of tests
performed for a run will be the minimum of the configured value and the
number of idle instances in the pool. When negative, the number of tests
performed will be <code>ceil({@link #getNumIdle}/
abs({@link #getNumTestsPerEvictionRun}))</code> which means that when the
value is <code>-n</code> roughly one nth of the idle objects will be
tested per run.
@return max number of objects to examine during each evictor run
Returns the maximum number of objects to examine during each run (if any) of the idle object evictor thread. When positive, the number of tests performed for a run will be the minimum of the configured value and the number of idle instances in the pool. When negative, the number of tests performed will be <code>ceil({@link #getNumIdle}/ abs({@link #getNumTestsPerEvictionRun}))</code> which means that when the value is <code>-n</code> roughly one nth of the idle objects will be tested per run.
@return max number of objects to examine during each evictor run
@see #setNumTestsPerEvictionRun @see #setTimeBetweenEvictionRunsMillis