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_wakeup_colls; /* possible spurious wakeup IPIs */ 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 * This structure is cache sensitive, separate nominal read-only elements 116 * from variable elements. 117 */ 118 struct vmstats { 119 /* 120 * Distribution of page usages. 121 */ 122 u_int v_page_size; /* page size in bytes */ 123 u_int v_unused01; 124 long v_page_count; /* total number of pages in system */ 125 long v_free_reserved; /* number of pages reserved for deadlock */ 126 long v_free_target; /* number of pages desired free */ 127 long v_free_min; /* minimum number of pages desired free */ 128 129 long v_cache_min; /* min number of pages desired on cache queue */ 130 long v_cache_max; /* max number of pages in cached obj */ 131 long v_pageout_free_min; /* min number pages reserved for kernel */ 132 long v_interrupt_free_min; /* reserved number of pages for int code */ 133 long v_free_severe; /* severe depletion of pages below this pt */ 134 long v_dma_pages; /* total dma-reserved pages */ 135 136 long v_unused_fixed[5]; 137 138 long v_free_count; /* number of pages free */ 139 long v_wire_count; /* number of pages wired down */ 140 long v_active_count; /* number of pages active */ 141 long v_inactive_target; /* number of pages desired inactive */ 142 long v_inactive_count; /* number of pages inactive */ 143 long v_cache_count; /* number of pages on buffer cache queue */ 144 long v_dma_avail; /* free dma-reserved pages */ 145 146 long v_unused_variable[9]; 147 }; 148 149 #define VMMETER_SLOP_COUNT 128 150 151 #ifdef _KERNEL 152 153 /* note: vmmeter 'cnt' structure is now per-cpu */ 154 extern struct vmstats vmstats; 155 156 #endif 157 158 /* systemwide totals computed every five seconds */ 159 struct vmtotal { 160 long t_rq; /* length of the run queue */ 161 long t_dw; /* jobs in ``disk wait'' (neg priority) */ 162 long t_pw; /* jobs in page wait */ 163 long t_sl; /* jobs sleeping in core */ 164 long t_sw; /* swapped out runnable/short block jobs */ 165 int64_t t_vm; /* total virtual memory */ 166 int64_t t_avm; /* active virtual memory */ 167 long t_rm; /* total real memory in use */ 168 long t_arm; /* active real memory */ 169 int64_t t_vmshr; /* shared virtual memory */ 170 int64_t t_avmshr; /* active shared virtual memory */ 171 long t_rmshr; /* shared real memory */ 172 long t_armshr; /* active shared real memory */ 173 long t_free; /* free memory pages */ 174 }; 175 176 #ifdef PGINPROF 177 /* 178 * Optional instrumentation. 179 */ 180 181 #define NDMON 128 182 #define NSMON 128 183 184 #define DRES 20 185 #define SRES 5 186 187 #define PMONMIN 20 188 #define PRES 50 189 #define NPMON 64 190 191 #define RMONMIN 130 192 #define RRES 5 193 #define NRMON 64 194 195 /* data and stack size distribution counters */ 196 u_int dmon[NDMON+1]; 197 u_int smon[NSMON+1]; 198 199 /* page in time distribution counters */ 200 u_int pmon[NPMON+2]; 201 202 /* reclaim time distribution counters */ 203 u_int rmon[NRMON+2]; 204 205 int pmonmin; 206 int pres; 207 int rmonmin; 208 int rres; 209 210 u_int rectime; /* accumulator for reclaim times */ 211 u_int pgintime; /* accumulator for page in times */ 212 213 #endif /* PGINPROF */ 214 215 #ifdef _KERNEL 216 217 void vmstats_rollup(void); 218 void vmstats_rollup_cpu(struct globaldata *gd); 219 220 #endif 221 #endif 222