GETPAGESIZE(3) Library Functions Manual GETPAGESIZE(3)

getpagesize
get system page size

Standard C Library (libc, -lc)

#include <unistd.h>

int
getpagesize(void);

This interface is obsoleted by sysconf(3).

getpagesize() returns the number of bytes in a page. Page granularity is the granularity of many of the memory management calls.

The page size is a system page size and may not be the same as the underlying hardware page size.

pagesize(1), sbrk(2), sysconf(3)

The getpagesize function call appeared in 4.2BSD.
June 4, 1993 NetBSD 9.2