pre>public&nbsp;Timer(<a href="http://download.oracle.com/javase/7/docs/api/java/util/concurrent/TimeUnit.html?is-external=true" title="class or interface in java.util.concurrent">TimeUnit</a>&nbsp;durationUnit,
     <a href="http://download.oracle.com/javase/7/docs/api/java/util/concurrent/TimeUnit.html?is-external=true" title="class or interface in java.util.concurrent">TimeUnit</a>&nbsp;rateUnit,
     <a href="../../../../../org/apache/solr/util/stats/Clock.html" title="class in org.apache.solr.util.stat