sys/sys/vmmeter.h

   1 /*-
   2  * Copyright (c) 1982, 1986, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  *      @(#)vmmeter.h   8.2 (Berkeley) 7/10/94
  34  * $FreeBSD: src/sys/sys/vmmeter.h,v 1.21.2.2 2002/10/10 19:28:21 dillon Exp $
  35  * $DragonFly: src/sys/sys/vmmeter.h,v 1.10 2006/05/20 02:42:13 dillon Exp $
  36  */
  37
  38 #ifndef _SYS_VMMETER_H_
  39 #define _SYS_VMMETER_H_
  40
  41 #ifndef _SYS_TYPES_H_
  42 #include <sys/types.h>
  43 #endif
  44
  45 /*
  46  * System wide statistics counters.
  47  */
  48 struct vmmeter {
  49         /*
  50          * General system activity.
  51          */
  52 #define vmmeter_uint_begin      v_swtch
  53         u_int v_swtch;          /* context switches */
  54         u_int v_trap;           /* calls to trap */
  55         u_int v_syscall;        /* calls to syscall() */
  56         u_int v_intr;           /* device interrupts */
  57         u_int v_soft;           /* software interrupts */
  58         /*
  59          * Virtual memory activity.
  60          */
  61         u_int v_vm_faults;      /* number of address memory faults */
  62         u_int v_cow_faults;     /* number of copy-on-writes */
  63         u_int v_cow_optim;      /* number of optimized copy-on-writes */
  64         u_int v_zfod;           /* pages zero filled on demand */
  65         u_int v_ozfod;          /* optimized zero fill pages */
  66         u_int v_swapin;         /* swap pager pageins */
  67         u_int v_swapout;        /* swap pager pageouts */
  68         u_int v_swappgsin;      /* swap pager pages paged in */
  69         u_int v_swappgsout;     /* swap pager pages paged out */
  70         u_int v_vnodein;        /* vnode pager pageins */
  71         u_int v_vnodeout;       /* vnode pager pageouts */
  72         u_int v_vnodepgsin;     /* vnode_pager pages paged in */
  73         u_int v_vnodepgsout;    /* vnode pager pages paged out */
  74         u_int v_intrans;        /* intransit blocking page faults */
  75         u_int v_reactivated;    /* number of pages reactivated from free list */
  76         u_int v_pdwakeups;      /* number of times daemon has awaken from sleep */
  77         u_int v_pdpages;        /* number of pages analyzed by daemon */
  78
  79         u_int v_dfree;          /* pages freed by daemon */
  80         u_int v_pfree;          /* pages freed by exiting processes */
  81         u_int v_tfree;          /* total pages freed */
  82         /*
  83          * Fork/vfork/rfork activity.
  84          */
  85         u_int v_forks;          /* number of fork() calls */
  86         u_int v_vforks;         /* number of vfork() calls */
  87         u_int v_rforks;         /* number of rfork() calls */
  88         u_int v_exec;           /* number of exec() calls */
  89         u_int v_kthreads;       /* number of fork() calls by kernel */
  90         u_int v_forkpages;      /* number of VM pages affected by fork() */
  91         u_int v_vforkpages;     /* number of VM pages affected by vfork() */
  92         u_int v_rforkpages;     /* number of VM pages affected by rfork() */
  93         u_int v_kthreadpages;   /* number of VM pages affected by fork() by kernel */
  94         u_int v_intrans_coll;   /* intransit map collisions (total) */
  95         u_int v_intrans_wait;   /* intransit map collisions which blocked */
  96         u_int v_forwarded_ints; /* forwarded interrupts due to MP lock */
  97         u_int v_forwarded_hits;
  98         u_int v_forwarded_misses;
  99         u_int v_sendsys;        /* calls to sendsys() */
 100         u_int v_waitsys;        /* calls to waitsys() */
 101 #define vmmeter_uint_end        v_waitsys
 102 };
 103
 104 struct vmstats {
 105         /*
 106          * Distribution of page usages.
 107          */
 108         u_int v_page_size;      /* page size in bytes */
 109         u_int v_page_count;     /* total number of pages in system */
 110         u_int v_free_reserved;  /* number of pages reserved for deadlock */
 111         u_int v_free_target;    /* number of pages desired free */
 112         u_int v_free_min;       /* minimum number of pages desired free */
 113         u_int v_free_count;     /* number of pages free */
 114         u_int v_wire_count;     /* number of pages wired down */
 115         u_int v_active_count;   /* number of pages active */
 116         u_int v_inactive_target; /* number of pages desired inactive */
 117         u_int v_inactive_count; /* number of pages inactive */
 118         u_int v_cache_count;    /* number of pages on buffer cache queue */
 119         u_int v_cache_min;      /* min number of pages desired on cache queue */
 120         u_int v_cache_max;      /* max number of pages in cached obj */
 121         u_int v_pageout_free_min;   /* min number pages reserved for kernel */
 122         u_int v_interrupt_free_min; /* reserved number of pages for int code */
 123         u_int v_free_severe;    /* severe depletion of pages below this pt */
 124 };
 125
 126 #ifdef _KERNEL
 127
 128 /* note: vmmeter 'cnt' structure is now per-cpu */
 129 extern struct vmstats vmstats;
 130
 131 #endif
 132
 133 /* systemwide totals computed every five seconds */
 134 struct vmtotal
 135 {
 136         int16_t t_rq;           /* length of the run queue */
 137         int16_t t_dw;           /* jobs in ``disk wait'' (neg priority) */
 138         int16_t t_pw;           /* jobs in page wait */
 139         int16_t t_sl;           /* jobs sleeping in core */
 140         int16_t t_sw;           /* swapped out runnable/short block jobs */
 141         int32_t t_vm;           /* total virtual memory */
 142         int32_t t_avm;          /* active virtual memory */
 143         int32_t t_rm;           /* total real memory in use */
 144         int32_t t_arm;          /* active real memory */
 145         int32_t t_vmshr;        /* shared virtual memory */
 146         int32_t t_avmshr;       /* active shared virtual memory */
 147         int32_t t_rmshr;        /* shared real memory */
 148         int32_t t_armshr;       /* active shared real memory */
 149         int32_t t_free;         /* free memory pages */
 150 };
 151
 152 #ifdef PGINPROF
 153 /*
 154  * Optional instrumentation.
 155  */
 156
 157 #define NDMON   128
 158 #define NSMON   128
 159
 160 #define DRES    20
 161 #define SRES    5
 162
 163 #define PMONMIN 20
 164 #define PRES    50
 165 #define NPMON   64
 166
 167 #define RMONMIN 130
 168 #define RRES    5
 169 #define NRMON   64
 170
 171 /* data and stack size distribution counters */
 172 u_int   dmon[NDMON+1];
 173 u_int   smon[NSMON+1];
 174
 175 /* page in time distribution counters */
 176 u_int   pmon[NPMON+2];
 177
 178 /* reclaim time distribution counters */
 179 u_int   rmon[NRMON+2];
 180
 181 int     pmonmin;
 182 int     pres;
 183 int     rmonmin;
 184 int     rres;
 185
 186 u_int rectime;          /* accumulator for reclaim times */
 187 u_int pgintime;         /* accumulator for page in times */
 188
 189 #endif  /* PGINPROF */
 190 #endif