If you are using Redhat (RHEL)/Fedora Core/Cent OS Linux use the following command :

/etc/init.d/crond stop
drush vdel cron_last

drush php-eval 'global $timers; $return = $args = array();foreach (module_implements("cron") as $module) { $function = $module . "_cron"; print($function ." - "); timer_start($function); $result = call_user_func_array($function, $args); if (isset($result) && is_array($result)) { $return = array_merge_recursive($return, $result); } else if (isset($result)) { $return[] = $result; } timer_stop ($function); print($timers[$function]["time"] ."\r\n");} '