usr/src/sys/sys/vmmeter.h

/*-
 * Copyright (c) 1982, 1986, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * %sccs.include.redist.c%
 *
 *      @(#)vmmeter.h   8.1 (Berkeley) %G%
 */

/*
 * System wide statistics counters.
 */
struct vmmeter {
        /*
         * General system activity.
         */
        unsigned v_swtch;       /* context switches */
        unsigned v_trap;        /* calls to trap */
        unsigned v_syscall;     /* calls to syscall() */
        unsigned v_intr;        /* device interrupts */
        unsigned v_soft;        /* software interrupts */
        unsigned v_faults;      /* total faults taken */
        /*
         * Virtual memory activity.
         */
        unsigned v_lookups;     /* object cache lookups */
        unsigned v_hits;        /* object cache hits */
        unsigned v_vm_faults;   /* number of address memory faults */
        unsigned v_cow_faults;  /* number of copy-on-writes */
        unsigned v_swpin;       /* swapins */
        unsigned v_swpout;      /* swapouts */
        unsigned v_pswpin;      /* pages swapped in */
        unsigned v_pswpout;     /* pages swapped out */
        unsigned v_pageins;     /* number of pageins */
        unsigned v_pageouts;    /* number of pageouts */
        unsigned v_pgpgin;      /* pages paged in */
        unsigned v_pgpgout;     /* pages paged out */
        unsigned v_intrans;     /* intransit blocking page faults */
        unsigned v_reactivated; /* number of pages reactivated from free list */
        unsigned v_rev;         /* revolutions of the hand */
        unsigned v_scan;        /* scans in page out daemon */
        unsigned v_dfree;       /* pages freed by daemon */
        unsigned v_pfree;       /* pages freed by exiting processes */
        unsigned v_zfod;        /* pages zero filled on demand */
        unsigned v_nzfod;       /* number of zfod's created */
        /*
         * Distribution of page usages.
         */
        unsigned v_page_size;   /* page size in bytes */
        unsigned v_kernel_pages;/* number of pages in use by kernel */
        unsigned v_free_target; /* number of pages desired free */
        unsigned v_free_min;    /* minimum number of pages desired free */
        unsigned v_free_count;  /* number of pages free */
        unsigned v_wire_count;  /* number of pages wired down */
        unsigned v_active_count;/* number of pages active */
        unsigned v_inactive_target; /* number of pages desired inactive */
        unsigned v_inactive_count;  /* number of pages inactive */
};
#ifdef KERNEL
struct  vmmeter cnt;
#endif

/* systemwide totals computed every five seconds */
struct vmtotal
{
        short   t_rq;           /* length of the run queue */
        short   t_dw;           /* jobs in ``disk wait'' (neg priority) */
        short   t_pw;           /* jobs in page wait */
        short   t_sl;           /* jobs sleeping in core */
        short   t_sw;           /* swapped out runnable/short block jobs */
        long    t_vm;           /* total virtual memory */
        long    t_avm;          /* active virtual memory */
        long    t_rm;           /* total real memory in use */
        long    t_arm;          /* active real memory */
        long    t_vmshr;        /* shared virtual memory */
        long    t_avmshr;       /* active shared virtual memory */
        long    t_rmshr;        /* shared real memory */
        long    t_armshr;       /* active shared real memory */
        long    t_free;         /* free memory pages */
};
#ifdef KERNEL
struct  vmtotal total;
#endif

/*
 * Optional instrumentation.
 */
#ifdef PGINPROF

#define NDMON   128
#define NSMON   128

#define DRES    20
#define SRES    5

#define PMONMIN 20
#define PRES    50
#define NPMON   64

#define RMONMIN 130
#define RRES    5
#define NRMON   64

/* data and stack size distribution counters */
unsigned int    dmon[NDMON+1];
unsigned int    smon[NSMON+1];

/* page in time distribution counters */
unsigned int    pmon[NPMON+2];

/* reclaim time distribution counters */
unsigned int    rmon[NRMON+2];

int     pmonmin;
int     pres;
int     rmonmin;
int     rres;

unsigned rectime;               /* accumulator for reclaim times */
unsigned pgintime;              /* accumulator for page in times */
#endif