2 * Copyright (c) 1982, 1986, 1989, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
33 * @(#)vm_meter.c 8.4 (Berkeley) 1/4/94
37 #include <sys/param.h>
38 #include <sys/systm.h>
39 #include <sys/kernel.h>
41 #include <sys/mutex.h>
43 #include <sys/resource.h>
45 #include <sys/vmmeter.h>
49 #include <vm/vm_page.h>
50 #include <vm/vm_extern.h>
51 #include <vm/vm_param.h>
53 #include <vm/vm_map.h>
54 #include <vm/vm_object.h>
55 #include <sys/sysctl.h>
61 SYSCTL_UINT(_vm, VM_V_FREE_MIN, v_free_min,
62 CTLFLAG_RW, &cnt.v_free_min, 0, "");
63 SYSCTL_UINT(_vm, VM_V_FREE_TARGET, v_free_target,
64 CTLFLAG_RW, &cnt.v_free_target, 0, "");
65 SYSCTL_UINT(_vm, VM_V_FREE_RESERVED, v_free_reserved,
66 CTLFLAG_RW, &cnt.v_free_reserved, 0, "");
67 SYSCTL_UINT(_vm, VM_V_INACTIVE_TARGET, v_inactive_target,
68 CTLFLAG_RW, &cnt.v_inactive_target, 0, "");
69 SYSCTL_UINT(_vm, VM_V_CACHE_MIN, v_cache_min,
70 CTLFLAG_RW, &cnt.v_cache_min, 0, "");
71 SYSCTL_UINT(_vm, VM_V_CACHE_MAX, v_cache_max,
72 CTLFLAG_RW, &cnt.v_cache_max, 0, "");
73 SYSCTL_UINT(_vm, VM_V_PAGEOUT_FREE_MIN, v_pageout_free_min,
74 CTLFLAG_RW, &cnt.v_pageout_free_min, 0, "");
75 SYSCTL_UINT(_vm, OID_AUTO, v_free_severe,
76 CTLFLAG_RW, &cnt.v_free_severe, 0, "");
78 SYSCTL_STRUCT(_vm, VM_LOADAVG, loadavg, CTLFLAG_RD,
79 &averunnable, loadavg, "Machine loadaverage history");
82 vmtotal(SYSCTL_HANDLER_ARGS)
85 struct vmtotal total, *totalp;
93 bzero(totalp, sizeof *totalp);
95 * Mark all objects as inactive.
98 mtx_lock(&vm_object_list_mtx);
99 TAILQ_FOREACH(object, &vm_object_list, object_list)
100 vm_object_clear_flag(object, OBJ_ACTIVE);
101 mtx_unlock(&vm_object_list_mtx);
103 * Calculate process statistics.
105 sx_slock(&allproc_lock);
106 FOREACH_PROC_IN_SYSTEM(p) {
107 if (p->p_flag & P_SYSTEM)
109 mtx_lock_spin(&sched_lock);
112 mtx_unlock_spin(&sched_lock);
118 kg = &p->p_ksegrp; /* XXXKSE */
119 if (p->p_sflag & PS_INMEM) {
120 if (FIRST_THREAD_IN_PROC(p)->td_priority
123 else if (kg->kg_slptime < maxslp)
125 } else if (kg->kg_slptime < maxslp)
127 if (kg->kg_slptime >= maxslp) {
128 mtx_unlock_spin(&sched_lock);
139 if (p->p_sflag & PS_INMEM)
143 if (p->p_stat == SIDL) {
144 mtx_unlock_spin(&sched_lock);
149 mtx_unlock_spin(&sched_lock);
151 * Note active objects.
154 for (map = &p->p_vmspace->vm_map, entry = map->header.next;
155 entry != &map->header; entry = entry->next) {
156 if ((entry->eflags & MAP_ENTRY_IS_SUB_MAP) ||
157 entry->object.vm_object == NULL)
159 vm_object_set_flag(entry->object.vm_object, OBJ_ACTIVE);
160 paging |= entry->object.vm_object->paging_in_progress;
165 sx_sunlock(&allproc_lock);
167 * Calculate object memory usage statistics.
169 mtx_lock(&vm_object_list_mtx);
170 TAILQ_FOREACH(object, &vm_object_list, object_list) {
172 * devices, like /dev/mem, will badly skew our totals
174 if (object->type == OBJT_DEVICE)
176 totalp->t_vm += object->size;
177 totalp->t_rm += object->resident_page_count;
178 if (object->flags & OBJ_ACTIVE) {
179 totalp->t_avm += object->size;
180 totalp->t_arm += object->resident_page_count;
182 if (object->shadow_count > 1) {
184 totalp->t_vmshr += object->size;
185 totalp->t_rmshr += object->resident_page_count;
186 if (object->flags & OBJ_ACTIVE) {
187 totalp->t_avmshr += object->size;
188 totalp->t_armshr += object->resident_page_count;
192 mtx_unlock(&vm_object_list_mtx);
193 totalp->t_free = cnt.v_free_count + cnt.v_cache_count;
194 return (sysctl_handle_opaque(oidp, totalp, sizeof total, req));
198 * vcnt() - accumulate statistics from all cpus and the global cnt
201 * The vmmeter structure is now per-cpu as well as global. Those
202 * statistics which can be kept on a per-cpu basis (to avoid cache
203 * stalls between cpus) can be moved to the per-cpu vmmeter. Remaining
204 * statistics, such as v_free_reserved, are left in the global
207 * (sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req)
210 vcnt(SYSCTL_HANDLER_ARGS)
213 int count = *(int *)arg1;
216 int offset = (char *)arg1 - (char *)&cnt;
218 for (i = 0; i < mp_ncpus; ++i) {
219 struct pcpu *pcpu = pcpu_find(i);
220 count += *(int *)((char *)&pcpu->pc_cnt + offset);
223 error = SYSCTL_OUT(req, &count, sizeof(int));
227 SYSCTL_PROC(_vm, VM_METER, vmmeter, CTLTYPE_OPAQUE|CTLFLAG_RD,
228 0, sizeof(struct vmtotal), vmtotal, "S,vmtotal",
229 "System virtual memory statistics");
230 SYSCTL_NODE(_vm, OID_AUTO, stats, CTLFLAG_RW, 0, "VM meter stats");
231 SYSCTL_NODE(_vm_stats, OID_AUTO, sys, CTLFLAG_RW, 0, "VM meter sys stats");
232 SYSCTL_NODE(_vm_stats, OID_AUTO, vm, CTLFLAG_RW, 0, "VM meter vm stats");
233 SYSCTL_NODE(_vm_stats, OID_AUTO, misc, CTLFLAG_RW, 0, "VM meter misc stats");
235 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_swtch, CTLTYPE_UINT|CTLFLAG_RD,
236 &cnt.v_swtch, 0, vcnt, "IU", "Context switches");
237 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_trap, CTLTYPE_UINT|CTLFLAG_RD,
238 &cnt.v_trap, 0, vcnt, "IU", "Traps");
239 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_syscall, CTLTYPE_UINT|CTLFLAG_RD,
240 &cnt.v_syscall, 0, vcnt, "IU", "Syscalls");
241 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_intr, CTLTYPE_UINT|CTLFLAG_RD,
242 &cnt.v_intr, 0, vcnt, "IU", "Hardware interrupts");
243 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_soft, CTLTYPE_UINT|CTLFLAG_RD,
244 &cnt.v_soft, 0, vcnt, "IU", "Software interrupts");
245 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vm_faults, CTLTYPE_UINT|CTLFLAG_RD,
246 &cnt.v_vm_faults, 0, vcnt, "IU", "VM faults");
247 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_cow_faults, CTLTYPE_UINT|CTLFLAG_RD,
248 &cnt.v_cow_faults, 0, vcnt, "IU", "COW faults");
249 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_cow_optim, CTLTYPE_UINT|CTLFLAG_RD,
250 &cnt.v_cow_optim, 0, vcnt, "IU", "Optimized COW faults");
251 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_zfod, CTLTYPE_UINT|CTLFLAG_RD,
252 &cnt.v_zfod, 0, vcnt, "IU", "Zero fill");
253 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_ozfod, CTLTYPE_UINT|CTLFLAG_RD,
254 &cnt.v_ozfod, 0, vcnt, "IU", "Optimized zero fill");
255 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_swapin, CTLTYPE_UINT|CTLFLAG_RD,
256 &cnt.v_swapin, 0, vcnt, "IU", "Swapin operations");
257 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_swapout, CTLTYPE_UINT|CTLFLAG_RD,
258 &cnt.v_swapout, 0, vcnt, "IU", "Swapout operations");
259 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_swappgsin, CTLTYPE_UINT|CTLFLAG_RD,
260 &cnt.v_swappgsin, 0, vcnt, "IU", "Swapin pages");
261 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_swappgsout, CTLTYPE_UINT|CTLFLAG_RD,
262 &cnt.v_swappgsout, 0, vcnt, "IU", "Swapout pages");
263 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vnodein, CTLTYPE_UINT|CTLFLAG_RD,
264 &cnt.v_vnodein, 0, vcnt, "IU", "Vnodein operations");
265 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vnodeout, CTLTYPE_UINT|CTLFLAG_RD,
266 &cnt.v_vnodeout, 0, vcnt, "IU", "Vnodeout operations");
267 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vnodepgsin, CTLTYPE_UINT|CTLFLAG_RD,
268 &cnt.v_vnodepgsin, 0, vcnt, "IU", "Vnodein pages");
269 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vnodepgsout, CTLTYPE_UINT|CTLFLAG_RD,
270 &cnt.v_vnodepgsout, 0, vcnt, "IU", "Vnodeout pages");
271 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_intrans, CTLTYPE_UINT|CTLFLAG_RD,
272 &cnt.v_intrans, 0, vcnt, "IU", "In transit page blocking");
273 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_reactivated, CTLTYPE_UINT|CTLFLAG_RD,
274 &cnt.v_reactivated, 0, vcnt, "IU", "Reactivated pages");
275 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_pdwakeups, CTLTYPE_UINT|CTLFLAG_RD,
276 &cnt.v_pdwakeups, 0, vcnt, "IU", "Pagedaemon wakeups");
277 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_pdpages, CTLTYPE_UINT|CTLFLAG_RD,
278 &cnt.v_pdpages, 0, vcnt, "IU", "Pagedaemon page scans");
279 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_dfree, CTLTYPE_UINT|CTLFLAG_RD,
280 &cnt.v_dfree, 0, vcnt, "IU", "");
281 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_pfree, CTLTYPE_UINT|CTLFLAG_RD,
282 &cnt.v_pfree, 0, vcnt, "IU", "");
283 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_tfree, CTLTYPE_UINT|CTLFLAG_RD,
284 &cnt.v_tfree, 0, vcnt, "IU", "");
285 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_page_size, CTLTYPE_UINT|CTLFLAG_RD,
286 &cnt.v_page_size, 0, vcnt, "IU", "");
287 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_page_count, CTLTYPE_UINT|CTLFLAG_RD,
288 &cnt.v_page_count, 0, vcnt, "IU", "");
289 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_free_reserved, CTLTYPE_UINT|CTLFLAG_RD,
290 &cnt.v_free_reserved, 0, vcnt, "IU", "");
291 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_free_target, CTLTYPE_UINT|CTLFLAG_RD,
292 &cnt.v_free_target, 0, vcnt, "IU", "");
293 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_free_min, CTLTYPE_UINT|CTLFLAG_RD,
294 &cnt.v_free_min, 0, vcnt, "IU", "");
295 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_free_count, CTLTYPE_UINT|CTLFLAG_RD,
296 &cnt.v_free_count, 0, vcnt, "IU", "");
297 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_wire_count, CTLTYPE_UINT|CTLFLAG_RD,
298 &cnt.v_wire_count, 0, vcnt, "IU", "");
299 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_active_count, CTLTYPE_UINT|CTLFLAG_RD,
300 &cnt.v_active_count, 0, vcnt, "IU", "");
301 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_inactive_target, CTLTYPE_UINT|CTLFLAG_RD,
302 &cnt.v_inactive_target, 0, vcnt, "IU", "");
303 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_inactive_count, CTLTYPE_UINT|CTLFLAG_RD,
304 &cnt.v_inactive_count, 0, vcnt, "IU", "");
305 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_cache_count, CTLTYPE_UINT|CTLFLAG_RD,
306 &cnt.v_cache_count, 0, vcnt, "IU", "");
307 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_cache_min, CTLTYPE_UINT|CTLFLAG_RD,
308 &cnt.v_cache_min, 0, vcnt, "IU", "");
309 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_cache_max, CTLTYPE_UINT|CTLFLAG_RD,
310 &cnt.v_cache_max, 0, vcnt, "IU", "");
311 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_pageout_free_min, CTLTYPE_UINT|CTLFLAG_RD,
312 &cnt.v_pageout_free_min, 0, vcnt, "IU", "");
313 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_interrupt_free_min, CTLTYPE_UINT|CTLFLAG_RD,
314 &cnt.v_interrupt_free_min, 0, vcnt, "IU", "");
315 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_forks, CTLTYPE_UINT|CTLFLAG_RD,
316 &cnt.v_forks, 0, vcnt, "IU", "Number of fork() calls");
317 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vforks, CTLTYPE_UINT|CTLFLAG_RD,
318 &cnt.v_vforks, 0, vcnt, "IU", "Number of vfork() calls");
319 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_rforks, CTLTYPE_UINT|CTLFLAG_RD,
320 &cnt.v_rforks, 0, vcnt, "IU", "Number of rfork() calls");
321 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_kthreads, CTLTYPE_UINT|CTLFLAG_RD,
322 &cnt.v_kthreads, 0, vcnt, "IU", "Number of fork() calls by kernel");
323 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_forkpages, CTLTYPE_UINT|CTLFLAG_RD,
324 &cnt.v_forkpages, 0, vcnt, "IU", "VM pages affected by fork()");
325 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vforkpages, CTLTYPE_UINT|CTLFLAG_RD,
326 &cnt.v_vforkpages, 0, vcnt, "IU", "VM pages affected by vfork()");
327 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_rforkpages, CTLTYPE_UINT|CTLFLAG_RD,
328 &cnt.v_rforkpages, 0, vcnt, "IU", "VM pages affected by rfork()");
329 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_kthreadpages, CTLTYPE_UINT|CTLFLAG_RD,
330 &cnt.v_kthreadpages, 0, vcnt, "IU", "VM pages affected by fork() by kernel");
332 SYSCTL_INT(_vm_stats_misc, OID_AUTO,
333 zero_page_count, CTLFLAG_RD, &vm_page_zero_count, 0, "");
335 SYSCTL_INT(_vm_stats_misc, OID_AUTO,
336 page_mask, CTLFLAG_RD, &page_mask, 0, "");
337 SYSCTL_INT(_vm_stats_misc, OID_AUTO,
338 page_shift, CTLFLAG_RD, &page_shift, 0, "");
339 SYSCTL_INT(_vm_stats_misc, OID_AUTO,
340 first_page, CTLFLAG_RD, &first_page, 0, "");
341 SYSCTL_INT(_vm_stats_misc, OID_AUTO,
342 last_page, CTLFLAG_RD, &last_page, 0, "");
343 SYSCTL_INT(_vm_stats_misc, OID_AUTO,
344 vm_page_bucket_count, CTLFLAG_RD, &vm_page_bucket_count, 0, "");
345 SYSCTL_INT(_vm_stats_misc, OID_AUTO,
346 vm_page_hash_mask, CTLFLAG_RD, &vm_page_hash_mask, 0, "");