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  * $DragonFly: src/sys/sys/vmmeter.h,v 1.10 2006/05/20 02:42:13 dillon Exp $
  32  */
  33
  34 #ifndef _SYS_VMMETER_H_
  35 #define _SYS_VMMETER_H_
  36
  37 #ifndef _SYS_TYPES_H_
  38 #include <sys/types.h>
  39 #endif
  40
  41 struct globaldata;
  42
  43 /*
  44  * System wide statistics counters.
  45  */
  46 struct vmmeter {
  47         /*
  48          * General system activity.
  49          */
  50 #define vmmeter_uint_begin      v_swtch
  51         u_int v_swtch;          /* context switches */
  52         u_int v_trap;           /* calls to trap */
  53         u_int v_syscall;        /* calls to syscall() */
  54         u_int v_intr;           /* device interrupts */
  55         u_int v_ipi;            /* inter processor interrupts */
  56         u_int v_timer;          /* LAPIC timer 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         u_int v_smpinvltlb;     /* nasty global invltlbs */
 102         u_int v_ppwakeups;      /* wakeups on processes stalled on VM */
 103         u_int v_lock_colls;     /* # of token, lock, or spin collisions */
 104         char  v_lock_name[16];  /* last-colliding token, lock, or spin name */
 105         u_int v_reserved6;
 106         u_int v_reserved7;
 107 #define vmmeter_uint_end        v_reserved7
 108 };
 109
 110 /*
 111  * vmstats structure, global vmstats is the rollup, pcpu vmstats keeps
 112  * track of minor (generally positive) adjustments.  For moving targets,
 113  * the global vmstats structure represents the smallest likely value.
 114  */
 115 struct vmstats {
 116         /*
 117          * Distribution of page usages.
 118          */
 119         u_int v_page_size;      /* page size in bytes */
 120         int v_page_count;       /* total number of pages in system */
 121         int v_free_reserved;    /* number of pages reserved for deadlock */
 122         int v_free_target;      /* number of pages desired free */
 123         int v_free_min;         /* minimum number of pages desired free */
 124         int v_free_count;       /* number of pages free */
 125         int v_wire_count;       /* number of pages wired down */
 126         int v_active_count;     /* number of pages active */
 127         int v_inactive_target;  /* number of pages desired inactive */
 128         int v_inactive_count;   /* number of pages inactive */
 129         int v_cache_count;      /* number of pages on buffer cache queue */
 130         int v_cache_min;        /* min number of pages desired on cache queue */
 131         int v_cache_max;        /* max number of pages in cached obj */
 132         int v_pageout_free_min; /* min number pages reserved for kernel */
 133         int v_interrupt_free_min; /* reserved number of pages for int code */
 134         int v_free_severe;      /* severe depletion of pages below this pt */
 135         int v_dma_avail;        /* free dma-reserved pages */
 136         int v_dma_pages;        /* total dma-reserved pages */
 137         int v_unused[8];
 138 };
 139
 140 #define VMMETER_SLOP_COUNT      10
 141
 142 #ifdef _KERNEL
 143
 144 /* note: vmmeter 'cnt' structure is now per-cpu */
 145 extern struct vmstats vmstats;
 146
 147 #endif
 148
 149 /* systemwide totals computed every five seconds */
 150 struct vmtotal {
 151         long    t_rq;           /* length of the run queue */
 152         long    t_dw;           /* jobs in ``disk wait'' (neg priority) */
 153         long    t_pw;           /* jobs in page wait */
 154         long    t_sl;           /* jobs sleeping in core */
 155         long    t_sw;           /* swapped out runnable/short block jobs */
 156         int64_t t_vm;           /* total virtual memory */
 157         int64_t t_avm;          /* active virtual memory */
 158         long    t_rm;           /* total real memory in use */
 159         long    t_arm;          /* active real memory */
 160         int64_t t_vmshr;        /* shared virtual memory */
 161         int64_t t_avmshr;       /* active shared virtual memory */
 162         long    t_rmshr;        /* shared real memory */
 163         long    t_armshr;       /* active shared real memory */
 164         long    t_free;         /* free memory pages */
 165 };
 166
 167 #ifdef PGINPROF
 168 /*
 169  * Optional instrumentation.
 170  */
 171
 172 #define NDMON   128
 173 #define NSMON   128
 174
 175 #define DRES    20
 176 #define SRES    5
 177
 178 #define PMONMIN 20
 179 #define PRES    50
 180 #define NPMON   64
 181
 182 #define RMONMIN 130
 183 #define RRES    5
 184 #define NRMON   64
 185
 186 /* data and stack size distribution counters */
 187 u_int   dmon[NDMON+1];
 188 u_int   smon[NSMON+1];
 189
 190 /* page in time distribution counters */
 191 u_int   pmon[NPMON+2];
 192
 193 /* reclaim time distribution counters */
 194 u_int   rmon[NRMON+2];
 195
 196 int     pmonmin;
 197 int     pres;
 198 int     rmonmin;
 199 int     rres;
 200
 201 u_int rectime;          /* accumulator for reclaim times */
 202 u_int pgintime;         /* accumulator for page in times */
 203
 204 #endif  /* PGINPROF */
 205
 206 #ifdef _KERNEL
 207
 208 void vmstats_rollup(void);
 209 void vmstats_rollup_cpu(struct globaldata *gd);
 210
 211 #endif
 212 #endif