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

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RedHat 9 (Linux i386) - man page for sigblock (redhat section 2)

SIGBLOCK(2)						     Linux Programmer's Manual						       SIGBLOCK(2)

sigblock, siggetmask, sigsetmask, sigmask - manipulate the signal mask
#include <signal.h> int sigblock(int mask); int siggetmask(void); int sigsetmask(int mask); int sigmask(int signum);
This interface is made obsolete by sigprocmask(2). The sigblock system call adds the signals specified in mask to the set of signals currently being blocked from delivery. The sigsetmask system call replaces the set of blocked signals totally with a new set specified in mask. Signals are blocked if the corre- sponding bit in mask is a 1. The current set of blocked signals can be obtained using siggetmask. The sigmask macro is provided to construct the mask for a given signum.
siggetmask returns the current set of masked signals. sigsetmask and sigblock return the previous set of masked signals.
Prototypes for these functions are only available if _BSD_SOURCE is defined before the inclusion of any system header file. It is not possible to block SIGKILL or SIGSTOP - this restriction is silently imposed by the system.
4.4BSD. These function calls appeared in BSD 4.3 and are deprecated. Use the POSIX signal facilities for new programs.
kill(2), sigprocmask(2), signal(7) Linux 1.3 1995-08-31 SIGBLOCK(2)

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