This plugin has been replaced with 2 new plugins, and will no longer be updated. You should consider migrating to these plugins instead. See link to the new version in the menu.
Goals Overview
chronos:jmetergui Launches the jmeter gui. Use this to generate a .jmx script (testplan).
chronos:jmeter Execute JMeter and parse the generated jtl-file (and possibly garbage collection logfile).
chronos:savehistory Enables you to save a snapshot of the testresults for use in historic reports.
chronos:check Check whether the performance goals have been met.