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 1.7 2003/07/24 01:41:27 dillon Exp $ 36 */ 37 38 #ifndef _SYS_VMMETER_H_ 39 #define _SYS_VMMETER_H_ 40 41 /* 42 * System wide statistics counters. 43 */ 44 struct vmmeter { 45 /* 46 * General system activity. 47 */ 48 #define vmmeter_uint_begin v_swtch 49 u_int v_swtch; /* context switches */ 50 u_int v_trap; /* calls to trap */ 51 u_int v_syscall; /* calls to syscall() */ 52 u_int v_intr; /* device interrupts */ 53 u_int v_soft; /* software interrupts */ 54 /* 55 * Virtual memory activity. 56 */ 57 u_int v_vm_faults; /* number of address memory faults */ 58 u_int v_cow_faults; /* number of copy-on-writes */ 59 u_int v_cow_optim; /* number of optimized copy-on-writes */ 60 u_int v_zfod; /* pages zero filled on demand */ 61 u_int v_ozfod; /* optimized zero fill pages */ 62 u_int v_swapin; /* swap pager pageins */ 63 u_int v_swapout; /* swap pager pageouts */ 64 u_int v_swappgsin; /* swap pager pages paged in */ 65 u_int v_swappgsout; /* swap pager pages paged out */ 66 u_int v_vnodein; /* vnode pager pageins */ 67 u_int v_vnodeout; /* vnode pager pageouts */ 68 u_int v_vnodepgsin; /* vnode_pager pages paged in */ 69 u_int v_vnodepgsout; /* vnode pager pages paged out */ 70 u_int v_intrans; /* intransit blocking page faults */ 71 u_int v_reactivated; /* number of pages reactivated from free list */ 72 u_int v_pdwakeups; /* number of times daemon has awaken from sleep */ 73 u_int v_pdpages; /* number of pages analyzed by daemon */ 74 75 u_int v_dfree; /* pages freed by daemon */ 76 u_int v_pfree; /* pages freed by exiting processes */ 77 u_int v_tfree; /* total pages freed */ 78 /* 79 * Fork/vfork/rfork activity. 80 */ 81 u_int v_forks; /* number of fork() calls */ 82 u_int v_vforks; /* number of vfork() calls */ 83 u_int v_rforks; /* number of rfork() calls */ 84 u_int v_kthreads; /* number of fork() calls by kernel */ 85 u_int v_forkpages; /* number of VM pages affected by fork() */ 86 u_int v_vforkpages; /* number of VM pages affected by vfork() */ 87 u_int v_rforkpages; /* number of VM pages affected by rfork() */ 88 u_int v_kthreadpages; /* number of VM pages affected by fork() by kernel */ 89 u_int v_intrans_coll; /* intransit map collisions (total) */ 90 u_int v_intrans_wait; /* intransit map collisions which blocked */ 91 u_int v_forwarded_ints; /* forwarded interrupts due to MP lock */ 92 u_int v_forwarded_hits; 93 u_int v_forwarded_misses; 94 u_int v_sendsys; /* calls to sendsys() */ 95 #define vmmeter_uint_end v_sendsys 96 }; 97 98 struct vmstats { 99 /* 100 * Distribution of page usages. 101 */ 102 u_int v_page_size; /* page size in bytes */ 103 u_int v_page_count; /* total number of pages in system */ 104 u_int v_free_reserved; /* number of pages reserved for deadlock */ 105 u_int v_free_target; /* number of pages desired free */ 106 u_int v_free_min; /* minimum number of pages desired free */ 107 u_int v_free_count; /* number of pages free */ 108 u_int v_wire_count; /* number of pages wired down */ 109 u_int v_active_count; /* number of pages active */ 110 u_int v_inactive_target; /* number of pages desired inactive */ 111 u_int v_inactive_count; /* number of pages inactive */ 112 u_int v_cache_count; /* number of pages on buffer cache queue */ 113 u_int v_cache_min; /* min number of pages desired on cache queue */ 114 u_int v_cache_max; /* max number of pages in cached obj */ 115 u_int v_pageout_free_min; /* min number pages reserved for kernel */ 116 u_int v_interrupt_free_min; /* reserved number of pages for int code */ 117 u_int v_free_severe; /* severe depletion of pages below this pt */ 118 }; 119 120 #ifdef _KERNEL 121 122 /* note: vmmeter 'cnt' structure is now per-cpu */ 123 extern struct vmstats vmstats; 124 125 #endif 126 127 /* systemwide totals computed every five seconds */ 128 struct vmtotal 129 { 130 int16_t t_rq; /* length of the run queue */ 131 int16_t t_dw; /* jobs in ``disk wait'' (neg priority) */ 132 int16_t t_pw; /* jobs in page wait */ 133 int16_t t_sl; /* jobs sleeping in core */ 134 int16_t t_sw; /* swapped out runnable/short block jobs */ 135 int32_t t_vm; /* total virtual memory */ 136 int32_t t_avm; /* active virtual memory */ 137 int32_t t_rm; /* total real memory in use */ 138 int32_t t_arm; /* active real memory */ 139 int32_t t_vmshr; /* shared virtual memory */ 140 int32_t t_avmshr; /* active shared virtual memory */ 141 int32_t t_rmshr; /* shared real memory */ 142 int32_t t_armshr; /* active shared real memory */ 143 int32_t t_free; /* free memory pages */ 144 }; 145 146 #ifdef PGINPROF 147 /* 148 * Optional instrumentation. 149 */ 150 151 #define NDMON 128 152 #define NSMON 128 153 154 #define DRES 20 155 #define SRES 5 156 157 #define PMONMIN 20 158 #define PRES 50 159 #define NPMON 64 160 161 #define RMONMIN 130 162 #define RRES 5 163 #define NRMON 64 164 165 /* data and stack size distribution counters */ 166 u_int dmon[NDMON+1]; 167 u_int smon[NSMON+1]; 168 169 /* page in time distribution counters */ 170 u_int pmon[NPMON+2]; 171 172 /* reclaim time distribution counters */ 173 u_int rmon[NRMON+2]; 174 175 int pmonmin; 176 int pres; 177 int rmonmin; 178 int rres; 179 180 u_int rectime; /* accumulator for reclaim times */ 181 u_int pgintime; /* accumulator for page in times */ 182 183 #endif /* PGINPROF */ 184 #endif 185