The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/sys/vmmeter.h

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    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  * $FreeBSD$
   35  */
   36 
   37 #ifndef _SYS_VMMETER_H_
   38 #define _SYS_VMMETER_H_
   39 
   40 /*
   41  * System wide statistics counters.
   42  */
   43 struct vmmeter {
   44         /*
   45          * General system activity.
   46          */
   47         u_int v_swtch;          /* context switches */
   48         u_int v_trap;           /* calls to trap */
   49         u_int v_syscall;        /* calls to syscall() */
   50         u_int v_intr;           /* device interrupts */
   51         u_int v_soft;           /* software interrupts */
   52         /*
   53          * Virtual memory activity.
   54          */
   55         u_int v_vm_faults;      /* number of address memory faults */
   56         u_int v_cow_faults;     /* number of copy-on-writes */
   57         u_int v_cow_optim;      /* number of optimized copy-on-writes */
   58         u_int v_zfod;           /* pages zero filled on demand */
   59         u_int v_ozfod;          /* pages prezero filled on demand */
   60         u_int v_swapin;         /* swap pager pageins */
   61         u_int v_swapout;        /* swap pager pageouts */
   62         u_int v_swappgsin;      /* swap pager pages paged in */
   63         u_int v_swappgsout;     /* swap pager pages paged out */
   64         u_int v_vnodein;        /* vnode pager pageins */
   65         u_int v_vnodeout;       /* vnode pager pageouts */
   66         u_int v_vnodepgsin;     /* vnode_pager pages paged in */
   67         u_int v_vnodepgsout;    /* vnode pager pages paged out */
   68         u_int v_intrans;        /* intransit blocking page faults */
   69         u_int v_reactivated;    /* number of pages reactivated from free list */
   70         u_int v_pdwakeups;      /* number of times daemon has awaken from sleep */
   71         u_int v_pdpages;        /* number of pages analyzed by daemon */
   72 
   73         u_int v_dfree;          /* pages freed by daemon */
   74         u_int v_pfree;          /* pages freed by exiting processes */
   75         u_int v_tfree;          /* total pages freed */
   76         /*
   77          * Distribution of page usages.
   78          */
   79         u_int v_page_size;      /* page size in bytes */
   80         u_int v_page_count;     /* total number of pages in system */
   81         u_int v_free_reserved;  /* number of pages reserved for deadlock */
   82         u_int v_free_target;    /* number of pages desired free */
   83         u_int v_free_min;       /* minimum number of pages desired free */
   84         u_int v_free_count;     /* number of pages free */
   85         u_int v_wire_count;     /* number of pages wired down */
   86         u_int v_active_count;   /* number of pages active */
   87         u_int v_inactive_target; /* number of pages desired inactive */
   88         u_int v_inactive_count; /* number of pages inactive */
   89         u_int v_cache_count;    /* number of pages on buffer cache queue */
   90         u_int v_cache_min;      /* min number of pages desired on cache queue */
   91         u_int v_cache_max;      /* max number of pages in cached obj */
   92         u_int v_pageout_free_min;   /* min number pages reserved for kernel */
   93         u_int v_interrupt_free_min; /* reserved number of pages for int code */
   94 };
   95 #ifdef KERNEL
   96 extern struct vmmeter cnt;
   97 #endif
   98 
   99 /* systemwide totals computed every five seconds */
  100 struct vmtotal
  101 {
  102         int16_t t_rq;           /* length of the run queue */
  103         int16_t t_dw;           /* jobs in ``disk wait'' (neg priority) */
  104         int16_t t_pw;           /* jobs in page wait */
  105         int16_t t_sl;           /* jobs sleeping in core */
  106         int16_t t_sw;           /* swapped out runnable/short block jobs */
  107         int32_t t_vm;           /* total virtual memory */
  108         int32_t t_avm;          /* active virtual memory */
  109         int32_t t_rm;           /* total real memory in use */
  110         int32_t t_arm;          /* active real memory */
  111         int32_t t_vmshr;        /* shared virtual memory */
  112         int32_t t_avmshr;       /* active shared virtual memory */
  113         int32_t t_rmshr;        /* shared real memory */
  114         int32_t t_armshr;       /* active shared real memory */
  115         int32_t t_free;         /* free memory pages */
  116 };
  117 
  118 /*
  119  * Optional instrumentation.
  120  */
  121 #ifdef PGINPROF
  122 
  123 #define NDMON   128
  124 #define NSMON   128
  125 
  126 #define DRES    20
  127 #define SRES    5
  128 
  129 #define PMONMIN 20
  130 #define PRES    50
  131 #define NPMON   64
  132 
  133 #define RMONMIN 130
  134 #define RRES    5
  135 #define NRMON   64
  136 
  137 /* data and stack size distribution counters */
  138 u_int   dmon[NDMON+1];
  139 u_int   smon[NSMON+1];
  140 
  141 /* page in time distribution counters */
  142 u_int   pmon[NPMON+2];
  143 
  144 /* reclaim time distribution counters */
  145 u_int   rmon[NRMON+2];
  146 
  147 int     pmonmin;
  148 int     pres;
  149 int     rmonmin;
  150 int     rres;
  151 
  152 u_int rectime;          /* accumulator for reclaim times */
  153 u_int pgintime;         /* accumulator for page in times */
  154 #endif
  155 
  156 #endif

Cache object: f17387551bba87826c99f5df8275bd62


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