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 */ 32 33 #ifndef _SYS_VMMETER_H_ 34 #define _SYS_VMMETER_H_ 35 36 #ifndef _SYS_TYPES_H_ 37 #include <sys/types.h> 38 #endif 39 40 struct globaldata; 41 42 /* 43 * System wide statistics counters. 44 */ 45 struct vmmeter { 46 /* 47 * General system activity. 48 */ 49 #define vmmeter_uint_begin v_swtch 50 u_int v_swtch; /* context switches */ 51 u_int v_trap; /* calls to trap */ 52 u_int v_syscall; /* calls to syscall() */ 53 u_int v_intr; /* device interrupts */ 54 u_int v_ipi; /* inter processor interrupts */ 55 u_int v_timer; /* LAPIC timer interrupts */ 56 u_int v_soft; /* software interrupts */ 57 /* 58 * Virtual memory activity. 59 */ 60 u_int v_vm_faults; /* number of address memory faults */ 61 u_int v_cow_faults; /* number of copy-on-writes */ 62 u_int v_cow_optim; /* number of optimized copy-on-writes */ 63 u_int v_zfod; /* pages zero filled on demand */ 64 u_int v_ozfod; /* optimized zero fill pages */ 65 u_int v_swapin; /* swap pager pageins */ 66 u_int v_swapout; /* swap pager pageouts */ 67 u_int v_swappgsin; /* swap pager pages paged in */ 68 u_int v_swappgsout; /* swap pager pages paged out */ 69 u_int v_vnodein; /* vnode pager pageins */ 70 u_int v_vnodeout; /* vnode pager pageouts */ 71 u_int v_vnodepgsin; /* vnode_pager pages paged in */ 72 u_int v_vnodepgsout; /* vnode pager pages paged out */ 73 u_int v_intrans; /* intransit blocking page faults */ 74 u_int v_reactivated; /* number of pages reactivated from free list */ 75 u_int v_pdwakeups; /* number of times daemon has awaken from sleep */ 76 u_int v_pdpages; /* number of pages analyzed by daemon */ 77 78 u_int v_dfree; /* pages freed by daemon */ 79 u_int v_pfree; /* pages freed by exiting processes */ 80 u_int v_tfree; /* total pages freed */ 81 /* 82 * Fork/vfork/rfork activity. 83 */ 84 u_int v_forks; /* number of fork() calls */ 85 u_int v_vforks; /* number of vfork() calls */ 86 u_int v_rforks; /* number of rfork() calls */ 87 u_int v_exec; /* number of exec() calls */ 88 u_int v_kthreads; /* number of fork() calls by kernel */ 89 u_int v_forkpages; /* number of VM pages affected by fork() */ 90 u_int v_vforkpages; /* number of VM pages affected by vfork() */ 91 u_int v_rforkpages; /* number of VM pages affected by rfork() */ 92 u_int v_kthreadpages; /* number of VM pages affected by fork() by kernel */ 93 u_int v_intrans_coll; /* intransit map collisions (total) */ 94 u_int v_intrans_wait; /* intransit map collisions which blocked */ 95 u_int v_forwarded_ints; /* forwarded interrupts due to MP lock */ 96 u_int v_forwarded_hits; 97 u_int v_forwarded_misses; 98 u_int v_smpinvltlb; /* nasty global invltlbs */ 99 u_int v_ppwakeups; /* wakeups on processes stalled on VM */ 100 u_int v_lock_colls; /* # of token, lock, or spin collisions */ 101 u_int v_wakeup_colls; /* possible spurious wakeup IPIs */ 102 u_int v_reserved7; 103 #define vmmeter_uint_end v_reserved7 104 char v_lock_name[32]; /* last-colliding token, lock, or spin name */ 105 void *v_lock_addr; /* last-colliding lock address */ 106 }; 107 108 /* 109 * vmstats structure, global vmstats is the rollup, pcpu vmstats keeps 110 * track of minor (generally positive) adjustments. For moving targets, 111 * the global vmstats structure represents the smallest likely value. 112 * 113 * This structure is cache sensitive, separate nominal read-only elements 114 * from variable elements. 115 */ 116 struct vmstats { 117 /* 118 * Distribution of page usages. 119 */ 120 u_int v_page_size; /* page size in bytes */ 121 u_int v_unused01; 122 long v_page_count; /* total number of pages in system */ 123 long v_free_severe; /* severe depletion of pages below this pt */ 124 long v_free_reserved; /* number of pages reserved for deadlock */ 125 126 /* 127 * Free page queues, pageout daemon starts below when v_free_count 128 * goes below v_free_min. 129 */ 130 long v_free_min; /* minimum free pages to maintain */ 131 long v_free_target; /* pageout daemon loop target */ 132 133 /* 134 * While operating, the pageout daemon pipelines up to N pages per 135 * loop, relooping as needed until all targets are achieved. 136 * 137 * active -> inactive 138 * inactive -> cache (1/4 of v_inactive_target) 139 */ 140 long v_inactive_target; /* active -> inactive */ 141 142 /* 143 * The pageout daemon also starts when (v_free_count + v_cache_count) 144 * goes below v_paging_start, and generally continues until it 145 * goes above v_paging_target2. 146 */ 147 long v_paging_wait; /* vs (free + cache), stall user-land */ 148 long v_paging_start; /* vs (free + cache), start paging */ 149 long v_paging_target1; /* vs (free + cache), slow down paging */ 150 long v_paging_target2; /* vs (free + cache), stop paging */ 151 152 long v_pageout_free_min; /* min number pages reserved for kernel */ 153 long v_interrupt_free_min; /* reserved number of pages for int code */ 154 long v_dma_pages; /* total dma-reserved pages */ 155 156 long v_unused_fixed01; 157 long v_unused_fixed02; 158 long v_unused_fixed03; 159 160 long v_free_count; /* number of pages free */ 161 long v_wire_count; /* number of pages wired down */ 162 long v_active_count; /* number of pages active */ 163 long v_inactive_count; /* number of pages inactive */ 164 long v_cache_count; /* number of pages on buffer cache queue */ 165 long v_dma_avail; /* free dma-reserved pages */ 166 167 long v_unused_variable[9]; 168 }; 169 170 #ifdef _KERNEL 171 172 /* note: vmmeter 'cnt' structure is now per-cpu */ 173 extern struct vmstats vmstats; 174 175 #endif 176 177 /* systemwide totals computed every five seconds */ 178 struct vmtotal { 179 long t_rq; /* length of the run queue */ 180 long t_dw; /* jobs in ``disk wait'' (neg priority) */ 181 long t_pw; /* jobs in page wait */ 182 long t_sl; /* jobs sleeping in core */ 183 long t_sw; /* swapped out runnable/short block jobs */ 184 int64_t t_vm; /* total virtual memory */ 185 int64_t t_avm; /* active virtual memory */ 186 long t_rm; /* total real memory in use */ 187 long t_arm; /* active real memory */ 188 int64_t t_vmshr; /* shared virtual memory */ 189 int64_t t_avmshr; /* active shared virtual memory */ 190 long t_rmshr; /* shared real memory */ 191 long t_armshr; /* active shared real memory */ 192 long t_free; /* free memory pages */ 193 }; 194 195 #ifdef PGINPROF 196 /* 197 * Optional instrumentation. 198 */ 199 200 #define NDMON 128 201 #define NSMON 128 202 203 #define DRES 20 204 #define SRES 5 205 206 #define PMONMIN 20 207 #define PRES 50 208 #define NPMON 64 209 210 #define RMONMIN 130 211 #define RRES 5 212 #define NRMON 64 213 214 /* data and stack size distribution counters */ 215 u_int dmon[NDMON+1]; 216 u_int smon[NSMON+1]; 217 218 /* page in time distribution counters */ 219 u_int pmon[NPMON+2]; 220 221 /* reclaim time distribution counters */ 222 u_int rmon[NRMON+2]; 223 224 int pmonmin; 225 int pres; 226 int rmonmin; 227 int rres; 228 229 u_int rectime; /* accumulator for reclaim times */ 230 u_int pgintime; /* accumulator for page in times */ 231 232 #endif /* PGINPROF */ 233 234 #ifdef _KERNEL 235 236 void vmstats_rollup(void); 237 void vmstats_rollup_cpu(struct globaldata *gd); 238 239 #endif 240 #endif 241