1 /* 2 * Copyright (c) 1982, 1986, 1989, 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 * @(#)vm_meter.c 8.4 (Berkeley) 1/4/94 34 * $FreeBSD$ 35 */ 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/kernel.h> 40 #include <sys/lock.h> 41 #include <sys/mutex.h> 42 #include <sys/proc.h> 43 #include <sys/resource.h> 44 #include <sys/sx.h> 45 #include <sys/vmmeter.h> 46 47 #include <vm/vm.h> 48 #include <vm/vm_page.h> 49 #include <vm/vm_extern.h> 50 #include <vm/vm_param.h> 51 #include <vm/pmap.h> 52 #include <vm/vm_map.h> 53 #include <vm/vm_object.h> 54 #include <sys/sysctl.h> 55 56 struct vmmeter cnt; 57 58 int maxslp = MAXSLP; 59 60 SYSCTL_UINT(_vm, VM_V_FREE_MIN, v_free_min, 61 CTLFLAG_RW, &cnt.v_free_min, 0, ""); 62 SYSCTL_UINT(_vm, VM_V_FREE_TARGET, v_free_target, 63 CTLFLAG_RW, &cnt.v_free_target, 0, ""); 64 SYSCTL_UINT(_vm, VM_V_FREE_RESERVED, v_free_reserved, 65 CTLFLAG_RW, &cnt.v_free_reserved, 0, ""); 66 SYSCTL_UINT(_vm, VM_V_INACTIVE_TARGET, v_inactive_target, 67 CTLFLAG_RW, &cnt.v_inactive_target, 0, ""); 68 SYSCTL_UINT(_vm, VM_V_CACHE_MIN, v_cache_min, 69 CTLFLAG_RW, &cnt.v_cache_min, 0, ""); 70 SYSCTL_UINT(_vm, VM_V_CACHE_MAX, v_cache_max, 71 CTLFLAG_RW, &cnt.v_cache_max, 0, ""); 72 SYSCTL_UINT(_vm, VM_V_PAGEOUT_FREE_MIN, v_pageout_free_min, 73 CTLFLAG_RW, &cnt.v_pageout_free_min, 0, ""); 74 SYSCTL_UINT(_vm, OID_AUTO, v_free_severe, 75 CTLFLAG_RW, &cnt.v_free_severe, 0, ""); 76 77 SYSCTL_STRUCT(_vm, VM_LOADAVG, loadavg, CTLFLAG_RD, 78 &averunnable, loadavg, "Machine loadaverage history"); 79 80 static int 81 vmtotal(SYSCTL_HANDLER_ARGS) 82 { 83 struct proc *p; 84 struct vmtotal total, *totalp; 85 vm_map_entry_t entry; 86 vm_object_t object; 87 vm_map_t map; 88 int paging; 89 struct ksegrp *kg; 90 91 totalp = &total; 92 bzero(totalp, sizeof *totalp); 93 /* 94 * Mark all objects as inactive. 95 */ 96 GIANT_REQUIRED; 97 TAILQ_FOREACH(object, &vm_object_list, object_list) 98 vm_object_clear_flag(object, OBJ_ACTIVE); 99 /* 100 * Calculate process statistics. 101 */ 102 sx_slock(&allproc_lock); 103 FOREACH_PROC_IN_SYSTEM(p) { 104 if (p->p_flag & P_SYSTEM) 105 continue; 106 mtx_lock_spin(&sched_lock); 107 switch (p->p_stat) { 108 case 0: 109 mtx_unlock_spin(&sched_lock); 110 continue; 111 112 case SMTX: 113 case SSLEEP: 114 case SSTOP: 115 kg = &p->p_ksegrp; /* XXXKSE */ 116 if (p->p_sflag & PS_INMEM) { 117 if (FIRST_THREAD_IN_PROC(p)->td_priority 118 <= PZERO) 119 totalp->t_dw++; 120 else if (kg->kg_slptime < maxslp) 121 totalp->t_sl++; 122 } else if (kg->kg_slptime < maxslp) 123 totalp->t_sw++; 124 if (kg->kg_slptime >= maxslp) { 125 mtx_unlock_spin(&sched_lock); 126 continue; 127 } 128 break; 129 130 case SWAIT: 131 totalp->t_sl++; 132 continue; 133 134 case SRUN: 135 case SIDL: 136 if (p->p_sflag & PS_INMEM) 137 totalp->t_rq++; 138 else 139 totalp->t_sw++; 140 if (p->p_stat == SIDL) { 141 mtx_unlock_spin(&sched_lock); 142 continue; 143 } 144 break; 145 } 146 mtx_unlock_spin(&sched_lock); 147 /* 148 * Note active objects. 149 */ 150 paging = 0; 151 for (map = &p->p_vmspace->vm_map, entry = map->header.next; 152 entry != &map->header; entry = entry->next) { 153 if ((entry->eflags & MAP_ENTRY_IS_SUB_MAP) || 154 entry->object.vm_object == NULL) 155 continue; 156 vm_object_set_flag(entry->object.vm_object, OBJ_ACTIVE); 157 paging |= entry->object.vm_object->paging_in_progress; 158 } 159 if (paging) 160 totalp->t_pw++; 161 } 162 sx_sunlock(&allproc_lock); 163 /* 164 * Calculate object memory usage statistics. 165 */ 166 TAILQ_FOREACH(object, &vm_object_list, object_list) { 167 /* 168 * devices, like /dev/mem, will badly skew our totals 169 */ 170 if (object->type == OBJT_DEVICE) 171 continue; 172 totalp->t_vm += object->size; 173 totalp->t_rm += object->resident_page_count; 174 if (object->flags & OBJ_ACTIVE) { 175 totalp->t_avm += object->size; 176 totalp->t_arm += object->resident_page_count; 177 } 178 if (object->shadow_count > 1) { 179 /* shared object */ 180 totalp->t_vmshr += object->size; 181 totalp->t_rmshr += object->resident_page_count; 182 if (object->flags & OBJ_ACTIVE) { 183 totalp->t_avmshr += object->size; 184 totalp->t_armshr += object->resident_page_count; 185 } 186 } 187 } 188 totalp->t_free = cnt.v_free_count + cnt.v_cache_count; 189 return (sysctl_handle_opaque(oidp, totalp, sizeof total, req)); 190 } 191 192 SYSCTL_PROC(_vm, VM_METER, vmmeter, CTLTYPE_OPAQUE|CTLFLAG_RD, 193 0, sizeof(struct vmtotal), vmtotal, "S,vmtotal", 194 "System virtual memory statistics"); 195 SYSCTL_NODE(_vm, OID_AUTO, stats, CTLFLAG_RW, 0, "VM meter stats"); 196 SYSCTL_NODE(_vm_stats, OID_AUTO, sys, CTLFLAG_RW, 0, "VM meter sys stats"); 197 SYSCTL_NODE(_vm_stats, OID_AUTO, vm, CTLFLAG_RW, 0, "VM meter vm stats"); 198 SYSCTL_NODE(_vm_stats, OID_AUTO, misc, CTLFLAG_RW, 0, "VM meter misc stats"); 199 SYSCTL_UINT(_vm_stats_sys, OID_AUTO, 200 v_swtch, CTLFLAG_RD, &cnt.v_swtch, 0, "Context switches"); 201 SYSCTL_UINT(_vm_stats_sys, OID_AUTO, 202 v_trap, CTLFLAG_RD, &cnt.v_trap, 0, "Traps"); 203 SYSCTL_UINT(_vm_stats_sys, OID_AUTO, 204 v_syscall, CTLFLAG_RD, &cnt.v_syscall, 0, "Syscalls"); 205 SYSCTL_UINT(_vm_stats_sys, OID_AUTO, v_intr, CTLFLAG_RD, 206 &cnt.v_intr, 0, "Hardware interrupts"); 207 SYSCTL_UINT(_vm_stats_sys, OID_AUTO, v_soft, CTLFLAG_RD, 208 &cnt.v_soft, 0, "Software interrupts"); 209 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 210 v_vm_faults, CTLFLAG_RD, &cnt.v_vm_faults, 0, "VM faults"); 211 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 212 v_cow_faults, CTLFLAG_RD, &cnt.v_cow_faults, 0, "COW faults"); 213 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 214 v_cow_optim, CTLFLAG_RD, &cnt.v_cow_optim, 0, "Optimized COW faults"); 215 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 216 v_zfod, CTLFLAG_RD, &cnt.v_zfod, 0, "Zero fill"); 217 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 218 v_ozfod, CTLFLAG_RD, &cnt.v_ozfod, 0, "Optimized zero fill"); 219 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 220 v_swapin, CTLFLAG_RD, &cnt.v_swapin, 0, "Swapin operations"); 221 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 222 v_swapout, CTLFLAG_RD, &cnt.v_swapout, 0, "Swapout operations"); 223 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 224 v_swappgsin, CTLFLAG_RD, &cnt.v_swappgsin, 0, "Swapin pages"); 225 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 226 v_swappgsout, CTLFLAG_RD, &cnt.v_swappgsout, 0, "Swapout pages"); 227 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 228 v_vnodein, CTLFLAG_RD, &cnt.v_vnodein, 0, "Vnodein operations"); 229 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 230 v_vnodeout, CTLFLAG_RD, &cnt.v_vnodeout, 0, "Vnodeout operations"); 231 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 232 v_vnodepgsin, CTLFLAG_RD, &cnt.v_vnodepgsin, 0, "Vnodein pages"); 233 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 234 v_vnodepgsout, CTLFLAG_RD, &cnt.v_vnodepgsout, 0, "Vnodeout pages"); 235 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 236 v_intrans, CTLFLAG_RD, &cnt.v_intrans, 0, "In transit page blocking"); 237 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 238 v_reactivated, CTLFLAG_RD, &cnt.v_reactivated, 0, "Reactivated pages"); 239 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 240 v_pdwakeups, CTLFLAG_RD, &cnt.v_pdwakeups, 0, "Pagedaemon wakeups"); 241 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 242 v_pdpages, CTLFLAG_RD, &cnt.v_pdpages, 0, "Pagedaemon page scans"); 243 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 244 v_dfree, CTLFLAG_RD, &cnt.v_dfree, 0, ""); 245 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 246 v_pfree, CTLFLAG_RD, &cnt.v_pfree, 0, ""); 247 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 248 v_tfree, CTLFLAG_RD, &cnt.v_tfree, 0, ""); 249 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 250 v_page_size, CTLFLAG_RD, &cnt.v_page_size, 0, ""); 251 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 252 v_page_count, CTLFLAG_RD, &cnt.v_page_count, 0, ""); 253 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 254 v_free_reserved, CTLFLAG_RD, &cnt.v_free_reserved, 0, ""); 255 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 256 v_free_target, CTLFLAG_RD, &cnt.v_free_target, 0, ""); 257 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 258 v_free_min, CTLFLAG_RD, &cnt.v_free_min, 0, ""); 259 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 260 v_free_count, CTLFLAG_RD, &cnt.v_free_count, 0, ""); 261 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 262 v_wire_count, CTLFLAG_RD, &cnt.v_wire_count, 0, ""); 263 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 264 v_active_count, CTLFLAG_RD, &cnt.v_active_count, 0, ""); 265 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 266 v_inactive_target, CTLFLAG_RD, &cnt.v_inactive_target, 0, ""); 267 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 268 v_inactive_count, CTLFLAG_RD, &cnt.v_inactive_count, 0, ""); 269 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 270 v_cache_count, CTLFLAG_RD, &cnt.v_cache_count, 0, ""); 271 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 272 v_cache_min, CTLFLAG_RD, &cnt.v_cache_min, 0, ""); 273 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 274 v_cache_max, CTLFLAG_RD, &cnt.v_cache_max, 0, ""); 275 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 276 v_pageout_free_min, CTLFLAG_RD, &cnt.v_pageout_free_min, 0, ""); 277 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 278 v_interrupt_free_min, CTLFLAG_RD, &cnt.v_interrupt_free_min, 0, ""); 279 SYSCTL_INT(_vm_stats_misc, OID_AUTO, 280 zero_page_count, CTLFLAG_RD, &vm_page_zero_count, 0, ""); 281 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 282 v_forks, CTLFLAG_RD, &cnt.v_forks, 0, "Number of fork() calls"); 283 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 284 v_vforks, CTLFLAG_RD, &cnt.v_vforks, 0, "Number of vfork() calls"); 285 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 286 v_rforks, CTLFLAG_RD, &cnt.v_rforks, 0, "Number of rfork() calls"); 287 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 288 v_kthreads, CTLFLAG_RD, &cnt.v_kthreads, 0, "Number of fork() calls by kernel"); 289 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 290 v_forkpages, CTLFLAG_RD, &cnt.v_forkpages, 0, "VM pages affected by fork()"); 291 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 292 v_vforkpages, CTLFLAG_RD, &cnt.v_vforkpages, 0, "VM pages affected by vfork()"); 293 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 294 v_rforkpages, CTLFLAG_RD, &cnt.v_rforkpages, 0, "VM pages affected by rfork()"); 295 SYSCTL_UINT(_vm_stats_vm, OID_AUTO, 296 v_kthreadpages, CTLFLAG_RD, &cnt.v_kthreadpages, 0, "VM pages affected by fork() by kernel"); 297 #if 0 298 SYSCTL_INT(_vm_stats_misc, OID_AUTO, 299 page_mask, CTLFLAG_RD, &page_mask, 0, ""); 300 SYSCTL_INT(_vm_stats_misc, OID_AUTO, 301 page_shift, CTLFLAG_RD, &page_shift, 0, ""); 302 SYSCTL_INT(_vm_stats_misc, OID_AUTO, 303 first_page, CTLFLAG_RD, &first_page, 0, ""); 304 SYSCTL_INT(_vm_stats_misc, OID_AUTO, 305 last_page, CTLFLAG_RD, &last_page, 0, ""); 306 SYSCTL_INT(_vm_stats_misc, OID_AUTO, 307 vm_page_bucket_count, CTLFLAG_RD, &vm_page_bucket_count, 0, ""); 308 SYSCTL_INT(_vm_stats_misc, OID_AUTO, 309 vm_page_hash_mask, CTLFLAG_RD, &vm_page_hash_mask, 0, ""); 310 #endif 311