sysinfo(2)

#include <sys/sysinfo.h>

int sysinfo(struct sysinfo *\ninfo\n);

struct sysinfo {
\n
    long uptime;             /* Seconds since boot */
\n
    unsigned long loads[3];  /* 1, 5, and 15 minute load averages */
\n
    unsigned long totalram;  /* Total usable main memory size */
\n
    unsigned long freeram;   /* Available memory size */
\n
    unsigned long sharedram; /* Amount of shared memory */
\n
    unsigned long bufferram; /* Memory used by buffers */
\n
    unsigned long totalswap; /* Total swap space size */
\n
    unsigned long freeswap;  /* Swap space still available */
\n
    unsigned short procs;    /* Number of current processes */
\n
    char _f[22];             /* Pads structure to 64 bytes */
};

struct sysinfo {
\n
    long uptime;             /* Seconds since boot */
\n
    unsigned long loads[3];  /* 1, 5, and 15 minute load averages */
\n
    unsigned long totalram;  /* Total usable main memory size */
\n
    unsigned long freeram;   /* Available memory size */
\n
    unsigned long sharedram; /* Amount of shared memory */
\n
    unsigned long bufferram; /* Memory used by buffers */
\n
    unsigned long totalswap; /* Total swap space size */
\n
    unsigned long freeswap;  /* Swap space still available */
\n
    unsigned short procs;    /* Number of current processes */
\n
    unsigned long totalhigh; /* Total high memory size */
\n
    unsigned long freehigh;  /* Available high memory size */
\n
    unsigned int mem_unit;   /* Memory unit size in bytes */
\n
    char _f[20-2*sizeof(long)-sizeof(int)];
\n
                             /* Padding to 64 bytes */
};