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. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  *      @(#)vmmeter.h   8.2 (Berkeley) 7/10/94
  30  * $FreeBSD: src/sys/sys/vmmeter.h,v 1.21.2.2 2002/10/10 19:28:21 dillon Exp $
  31  */
  32
  33 #ifndef _SYS_VMMETER_H_
  34 #define _SYS_VMMETER_H_
  35
  36 #ifndef _SYS_TYPES_H_
  37 #include <sys/types.h>
  38 #endif
  39
  40 struct globaldata;
  41
  42 /*
  43  * System wide statistics counters.
  44  */
  45 struct vmmeter {
  46         /*
  47          * General system activity.
  48          */
  49 #define vmmeter_uint_begin      v_swtch
  50         u_int v_swtch;          /* context switches */
  51         u_int v_trap;           /* calls to trap */
  52         u_int v_syscall;        /* calls to syscall() */
  53         u_int v_intr;           /* device interrupts */
  54         u_int v_ipi;            /* inter processor interrupts */
  55         u_int v_timer;          /* LAPIC timer interrupts */
  56         u_int v_soft;           /* software interrupts */
  57         /*
  58          * Virtual memory activity.
  59          */
  60         u_int v_vm_faults;      /* number of address memory faults */
  61         u_int v_cow_faults;     /* number of copy-on-writes */
  62         u_int v_cow_optim;      /* number of optimized copy-on-writes */
  63         u_int v_zfod;           /* pages zero filled on demand */
  64         u_int v_ozfod;          /* optimized zero fill pages */
  65         u_int v_swapin;         /* swap pager pageins */
  66         u_int v_swapout;        /* swap pager pageouts */
  67         u_int v_swappgsin;      /* swap pager pages paged in */
  68         u_int v_swappgsout;     /* swap pager pages paged out */
  69         u_int v_vnodein;        /* vnode pager pageins */
  70         u_int v_vnodeout;       /* vnode pager pageouts */
  71         u_int v_vnodepgsin;     /* vnode_pager pages paged in */
  72         u_int v_vnodepgsout;    /* vnode pager pages paged out */
  73         u_int v_intrans;        /* intransit blocking page faults */
  74         u_int v_reactivated;    /* number of pages reactivated from free list */
  75         u_int v_pdwakeups;      /* number of times daemon has awaken from sleep */
  76         u_int v_pdpages;        /* number of pages analyzed by daemon */
  77
  78         u_int v_dfree;          /* pages freed by daemon */
  79         u_int v_pfree;          /* pages freed by exiting processes */
  80         u_int v_tfree;          /* total pages freed */
  81         /*
  82          * Fork/vfork/rfork activity.
  83          */
  84         u_int v_forks;          /* number of fork() calls */
  85         u_int v_vforks;         /* number of vfork() calls */
  86         u_int v_rforks;         /* number of rfork() calls */
  87         u_int v_exec;           /* number of exec() calls */
  88         u_int v_kthreads;       /* number of fork() calls by kernel */
  89         u_int v_forkpages;      /* number of VM pages affected by fork() */
  90         u_int v_vforkpages;     /* number of VM pages affected by vfork() */
  91         u_int v_rforkpages;     /* number of VM pages affected by rfork() */
  92         u_int v_kthreadpages;   /* number of VM pages affected by fork() by kernel */
  93         u_int v_intrans_coll;   /* intransit map collisions (total) */
  94         u_int v_intrans_wait;   /* intransit map collisions which blocked */
  95         u_int v_forwarded_ints; /* forwarded interrupts due to MP lock */
  96         u_int v_forwarded_hits;
  97         u_int v_forwarded_misses;
  98         u_int v_smpinvltlb;     /* nasty global invltlbs */
  99         u_int v_ppwakeups;      /* wakeups on processes stalled on VM */
 100         u_int v_lock_colls;     /* # of token, lock, or spin collisions */
 101         char  v_lock_name[16];  /* last-colliding token, lock, or spin name */
 102         u_int v_wakeup_colls;   /* possible spurious wakeup IPIs */
 103         u_int v_reserved7;
 104 #define vmmeter_uint_end        v_reserved7
 105 };
 106
 107 /*
 108  * vmstats structure, global vmstats is the rollup, pcpu vmstats keeps
 109  * track of minor (generally positive) adjustments.  For moving targets,
 110  * the global vmstats structure represents the smallest likely value.
 111  *
 112  * This structure is cache sensitive, separate nominal read-only elements
 113  * from variable elements.
 114  */
 115 struct vmstats {
 116         /*
 117          * Distribution of page usages.
 118          */
 119         u_int v_page_size;      /* page size in bytes */
 120         u_int v_unused01;
 121         long v_page_count;      /* total number of pages in system */
 122         long v_free_reserved;   /* number of pages reserved for deadlock */
 123         long v_free_target;     /* number of pages desired free */
 124         long v_free_min;        /* minimum number of pages desired free */
 125
 126         long v_cache_min;       /* min number of pages desired on cache queue */
 127         long v_cache_max;       /* max number of pages in cached obj */
 128         long v_pageout_free_min; /* min number pages reserved for kernel */
 129         long v_interrupt_free_min; /* reserved number of pages for int code */
 130         long v_free_severe;     /* severe depletion of pages below this pt */
 131         long v_dma_pages;       /* total dma-reserved pages */
 132
 133         long v_unused_fixed[5];
 134
 135         long v_free_count;      /* number of pages free */
 136         long v_wire_count;      /* number of pages wired down */
 137         long v_active_count;    /* number of pages active */
 138         long v_inactive_target; /* number of pages desired inactive */
 139         long v_inactive_count;  /* number of pages inactive */
 140         long v_cache_count;     /* number of pages on buffer cache queue */
 141         long v_dma_avail;       /* free dma-reserved pages */
 142
 143         long v_unused_variable[9];
 144 };
 145
 146 #define VMMETER_SLOP_COUNT      128
 147
 148 #ifdef _KERNEL
 149
 150 /* note: vmmeter 'cnt' structure is now per-cpu */
 151 extern struct vmstats vmstats;
 152
 153 #endif
 154
 155 /* systemwide totals computed every five seconds */
 156 struct vmtotal {
 157         long    t_rq;           /* length of the run queue */
 158         long    t_dw;           /* jobs in ``disk wait'' (neg priority) */
 159         long    t_pw;           /* jobs in page wait */
 160         long    t_sl;           /* jobs sleeping in core */
 161         long    t_sw;           /* swapped out runnable/short block jobs */
 162         int64_t t_vm;           /* total virtual memory */
 163         int64_t t_avm;          /* active virtual memory */
 164         long    t_rm;           /* total real memory in use */
 165         long    t_arm;          /* active real memory */
 166         int64_t t_vmshr;        /* shared virtual memory */
 167         int64_t t_avmshr;       /* active shared virtual memory */
 168         long    t_rmshr;        /* shared real memory */
 169         long    t_armshr;       /* active shared real memory */
 170         long    t_free;         /* free memory pages */
 171 };
 172
 173 #ifdef PGINPROF
 174 /*
 175  * Optional instrumentation.
 176  */
 177
 178 #define NDMON   128
 179 #define NSMON   128
 180
 181 #define DRES    20
 182 #define SRES    5
 183
 184 #define PMONMIN 20
 185 #define PRES    50
 186 #define NPMON   64
 187
 188 #define RMONMIN 130
 189 #define RRES    5
 190 #define NRMON   64
 191
 192 /* data and stack size distribution counters */
 193 u_int   dmon[NDMON+1];
 194 u_int   smon[NSMON+1];
 195
 196 /* page in time distribution counters */
 197 u_int   pmon[NPMON+2];
 198
 199 /* reclaim time distribution counters */
 200 u_int   rmon[NRMON+2];
 201
 202 int     pmonmin;
 203 int     pres;
 204 int     rmonmin;
 205 int     rres;
 206
 207 u_int rectime;          /* accumulator for reclaim times */
 208 u_int pgintime;         /* accumulator for page in times */
 209
 210 #endif  /* PGINPROF */
 211
 212 #ifdef _KERNEL
 213
 214 void vmstats_rollup(void);
 215 void vmstats_rollup_cpu(struct globaldata *gd);
 216
 217 #endif
 218 #endif