Linux leap second problem caused by slow application

Leap second refers to a Linux system that automatically adjusts the system time, which usually occurs at the end of a month, most likely the month of June and December, when a leap second occurs that can cause the application (Java) to be busy, resulting in a slow response.

If there is a leap=01 in the return of the command, it means that there will be a leap second happening

Ntpq-c "Lassoc"-C "MRV &1 &999 leap,srcadr,stratum"

If "No leap seconds" is returned in the following command, it means that no leap second will occur.

File/etc/localtime

If the following command returns, it indicates that a leap second occurs.

Ntptime |egrep ' ins| DEL '

If your system has a leap second problem, you can resolve it in the following ways.

- Stop NTPD Service

-Resets the kernel state and frequency,

Ntptime-s 0-f 0

-X is appended to the/etc/sysconfig/ntpd file, enabling Slew mode

-Start NTPD Service

Leap second occurs in specific ntpd and kernel, this article is labeled a leap second stress test C program.

leap-a-day.c

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Linux leap second problem caused by slow application