One of the workaround for old CentOS/CentOS kernel (6.1-6.3) which may Systems hang due to leap-second livelock. (quoting redhat), is to set  tinker step in /etc/ntp.conf. Bug the documentation is not clear about the unit/syntax (http://doc.ntp.org/4.2.6p5/miscopt.html#tinker).What is the exact syntax (unit) for tinker step?Also, how can I query the current value of tinker step on a running NTP daemon?
How to set NTP tinker step (which unit)? and how to query?
ntp;ntpd