+++ /dev/null
-.\" -*- nroff -*-
-.\"
-.\" (C)opyright 1993 by Dan Miner (dminer@nyx.cs.du.edu)
-.\"
-.\" Permission is granted to freely distribute or modify this file
-.\" for the purpose of improving Linux or its documentation efforts.
-.\" If you modify this file, please put a date stamp and HOW you
-.\" changed this file. Thanks. -DM
-.\"
-.\" Modified Sat Jul 24 12:35:12 1993 by Rik Faith <faith@cs.unc.edu>
-.\" Modified Tue Oct 22 22:29:51 1996 by Eric S. Raymond <esr@thyrsus.com>
-.\" Modified Mon Aug 25 16:06:11 1997 by Nicolás Lichtmaier <nick@debian.org>
-.\"
-.TH SYSINFO 2 1997-08-25 "Linux 2.0" "Linux Programmer's Manual"
-.SH NAME
-sysinfo \- returns information on overall system statistics
-.SH SYNOPSIS
-.B #include <sys/sysinfo.h>
-.sp
-.BI "int sysinfo(struct sysinfo *" info );
-.SH DESCRIPTION
-Until Linux 2.3.16,
-.B sysinfo
-used to return information in the following structure:
-
-.RS
-.nf
-struct sysinfo {
- long uptime; /* Seconds since boot */
- unsigned long loads[3]; /* 1, 5, and 15 minute load averages */
- unsigned long totalram; /* Total usable main memory size */
- unsigned long freeram; /* Available memory size */
- unsigned long sharedram; /* Amount of shared memory */
- unsigned long bufferram; /* Memory used by buffers */
- unsigned long totalswap; /* Total swap space size */
- unsigned long freeswap; /* swap space still available */
- unsigned short procs; /* Number of current processes */
- char _f[22]; /* Pads structure to 64 bytes */
-};
-.fi
-.RE
-
-and the sizes were given in bytes. Since Linux 2.3.23 (i386), 2.3.48
-(all architectures) the structure is
-
-.RS
-.nf
-struct sysinfo {
- long uptime; /* Seconds since boot */
- unsigned long loads[3]; /* 1, 5, and 15 minute load averages */
- unsigned long totalram; /* Total usable main memory size */
- unsigned long freeram; /* Available memory size */
- unsigned long sharedram; /* Amount of shared memory */
- unsigned long bufferram; /* Memory used by buffers */
- unsigned long totalswap; /* Total swap space size */
- unsigned long freeswap; /* swap space still available */
- unsigned short procs; /* Number of current processes */
- unsigned long totalhigh; /* Total high memory size */
- unsigned long freehigh; /* Available high memory size */
- unsigned int mem_unit; /* Memory unit size in bytes */
- char _f[20\-2*sizeof(long)\-sizeof(int)]; /* Padding for libc5 */
-};
-.fi
-.RE
-
-and the sizes are given as multiples of \fImem_unit\fP bytes.
-
-.B sysinfo
-provides a simple way of getting overall system statistics. This is more
-portable than reading \fI/dev/kmem\fP.
-For an example of its use, see intro(2).
-.SH "RETURN VALUE"
-On success, zero is returned. On error, \-1 is returned, and
-.I errno
-is set appropriately.
-.SH ERRORS
-.TP
-.B EFAULT
-pointer to \fIstruct\ sysinfo\fP is invalid
-.SH "CONFORMING TO"
-This function is Linux-specific, and should not be used in programs
-intended to be portable.
-.sp
-The Linux kernel has a sysinfo system call since 0.98.pl6.
-Linux libc contains a sysinfo() routine since 5.3.5, and
-glibc has one since 1.90.
-.SH "SEE ALSO"
-.BR proc (5)