OpenVZ Virtuozzo Containers Wiki - User contributions [en]

Memory page

2006-12-13T00:39:24Z

Spirit: corrected format issues with #-sign

'''Memory page''' is a range of consecutive addresses in the virtual address space whose size is a power of two. Those virtual addresses are translated in a corresponding range of consecutive physical addresses. The memory referenced by such a range is called a '''page'''.

Size of memory page is architecture and operating system dependant. On an x86 and x86_64 hardware, memory page is equal to 4KB. On an Intel Itanium (IA64) memory page size is 16KB.

<br>
You can get the actual value on your Linux/UNIX system with the '''getpagesize'''-Syscall. Here is a C Program that prints the pagesize on your system :

<pre>
#include <unistd.h>
#include <stdio.h>

int main(int argc, char* argv[])
{
long sz = sysconf(_SC_PAGESIZE);
printf("memory pagesize on this box : %i\n", sz);
return 0;
}
</pre>

compile with :
<pre>
gcc -o getpagesize getpagesize.c
</pre>

[[Category:Definitions]]

Memory page

2006-12-13T00:34:28Z

Spirit: added C code to print pagesize on unix systems

'''Memory page''' is a range of consecutive addresses in the virtual address space whose size is a power of two. Those virtual addresses are translated in a corresponding range of consecutive physical addresses. The memory referenced by such a range is called a '''page'''.

Size of memory page is architecture and operating system dependant. On an x86 and x86_64 hardware, memory page is equal to 4KB. On an Intel Itanium (IA64) memory page size is 16KB.

You can get the actual value on your Linux/UNIX system with the '''getpagesize'''-Syscall. Here is a C Program that prints the pagesize on your system :

<code>
#include <unistd.h>
#include <stdio.h>

int main(int argc, char* argv[])
{
long sz = sysconf(_SC_PAGESIZE);
printf("memory pagesize on this box : %i\n", sz);
return 0;
}
</code>

compile with : gcc -o getpagesize getpagesize.c

[[Category:Definitions]]