add active thread gauge

git-svn-id: https://svn.apache.org/repos/asf/incubator/sirona/trunk@1543272 13f79535-47bb-0310-9956-ffa450edef68
better with adding file

git-svn-id: https://svn.apache.org/repos/asf/incubator/sirona/trunk@1543274 13f79535-47bb-0310-9956-ffa450edef68