Today (Saturday) We will make some minor tuning adjustments to MySQL.

You may experience 2 up to 10 seconds "glitch time" when we restart MySQL. We expect to make these adjustments around 1AM Eastern Daylight Saving Time (EDT) US.

Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

FreeBSD 11.0 - man page for adjtime (freebsd section 2)

ADJTIME(2)						      BSD System Calls Manual							ADJTIME(2)

NAME
adjtime -- correct the time to allow synchronization of the system clock
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <sys/time.h> int adjtime(const struct timeval *delta, struct timeval *olddelta);
DESCRIPTION
The adjtime() system call makes small adjustments to the system time, as returned by gettimeofday(2), advancing or retarding it by the time specified by the timeval delta. If delta is negative, the clock is slowed down by incrementing it more slowly than normal until the correc- tion is complete. If delta is positive, a larger increment than normal is used. The skew used to perform the correction is generally a fraction of one percent. Thus, the time is always a monotonically increasing function. A time correction from an earlier call to adjtime() may not be finished when adjtime() is called again. If olddelta is not a null pointer, the structure pointed to will contain, upon return, the number of microseconds still to be corrected from the earlier call. This call may be used by time servers that synchronize the clocks of computers in a local area network. Such time servers would slow down the clocks of some machines and speed up the clocks of others to bring them to the average network time. The adjtime() system call is restricted to the super-user.
RETURN VALUES
The adjtime() function returns the value 0 if successful; otherwise the value -1 is returned and the global variable errno is set to indicate the error.
ERRORS
The adjtime() system call will fail if: [EFAULT] An argument points outside the process's allocated address space. [EPERM] The process's effective user ID is not that of the super-user.
SEE ALSO
date(1), gettimeofday(2), timed(8), timedc(8) R. Gusella and S. Zatti, TSP: The Time Synchronization Protocol for UNIX 4.3BSD.
HISTORY
The adjtime() system call appeared in 4.3BSD.
BSD
June 4, 1993 BSD

Featured Tech Videos