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
Also, how can I query the current value of
tinker step on a running NTP daemon?