FreeBSD/Linux Kernel Cross Reference
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 * $FreeBSD$
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
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