12-12-2011
There are three concerns here.
1. I knew that the parent PID is always displayed first and the child displayed second. However this is the first time i see that the parent PID is displayed after the child PIDs.
2. The STIME mentioned which in this case shows Nov 20 does not specify the time but just the date. I need the time as well.
3. I am also sure that my apache was resatrted yesterday so Nov 20 does not seem correct to me.
Also please help me understand technically how does "spawned the other children" help increase performance and how and when it decides to spawn. Any article on the same would be appreciated.
Kindly help.
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LEARN ABOUT PHP
pcntl_fork
PCNTL_FORK(3) 1 PCNTL_FORK(3)
pcntl_fork - Forks the currently running process
SYNOPSIS
int pcntl_fork (void )
DESCRIPTION
The pcntl_fork(3) function creates a child process that differs from the parent process only in its PID and PPID. Please see your system's
fork(2) man page for specific details as to how fork works on your system.
RETURN VALUES
On success, the PID of the child process is returned in the parent's thread of execution, and a 0 is returned in the child's thread of
execution. On failure, a -1 will be returned in the parent's context, no child process will be created, and a PHP error is raised.
EXAMPLES
Example #1
pcntl_fork(3) example
<?php
$pid = pcntl_fork();
if ($pid == -1) {
die('could not fork');
} else if ($pid) {
// we are the parent
pcntl_wait($status); //Protect against Zombie children
} else {
// we are the child
}
?>
SEE ALSO
pcntl_waitpid(3), pcntl_signal(3), setproctitle(3).
PHP Documentation Group PCNTL_FORK(3)