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)
84 /* XXXKSE almost completely broken */
86 struct vmtotal total, *totalp;
95 bzero(totalp, sizeof *totalp);
97 * Mark all objects as inactive.
100 mtx_lock(&vm_object_list_mtx);
101 TAILQ_FOREACH(object, &vm_object_list, object_list)
102 vm_object_clear_flag(object, OBJ_ACTIVE);
103 mtx_unlock(&vm_object_list_mtx);
105 * Calculate process statistics.
107 sx_slock(&allproc_lock);
108 FOREACH_PROC_IN_SYSTEM(p) {
109 if (p->p_flag & P_SYSTEM)
111 mtx_lock_spin(&sched_lock);
112 switch (p->p_state) {
114 if (p->p_sflag & PS_INMEM)
118 mtx_unlock_spin(&sched_lock);
122 FOREACH_THREAD_IN_PROC(p, td) {
123 switch (td->td_state) {
126 kg = td->td_ksegrp; /* XXXKSE */
127 if (p->p_sflag & PS_INMEM) {
128 if (td->td_priority <= PZERO)
130 else if (kg->kg_slptime
133 } else if (kg->kg_slptime < maxslp)
135 if (kg->kg_slptime >= maxslp) {
142 if (p->p_sflag & PS_INMEM)
156 mtx_unlock_spin(&sched_lock);
158 * Note active objects.
161 for (map = &p->p_vmspace->vm_map, entry = map->header.next;
162 entry != &map->header; entry = entry->next) {
163 if ((entry->eflags & MAP_ENTRY_IS_SUB_MAP) ||
164 entry->object.vm_object == NULL)
166 vm_object_set_flag(entry->object.vm_object, OBJ_ACTIVE);
167 paging |= entry->object.vm_object->paging_in_progress;
172 sx_sunlock(&allproc_lock);
174 * Calculate object memory usage statistics.
176 mtx_lock(&vm_object_list_mtx);
177 TAILQ_FOREACH(object, &vm_object_list, object_list) {
179 * devices, like /dev/mem, will badly skew our totals
181 if (object->type == OBJT_DEVICE)
183 totalp->t_vm += object->size;
184 totalp->t_rm += object->resident_page_count;
185 if (object->flags & OBJ_ACTIVE) {
186 totalp->t_avm += object->size;
187 totalp->t_arm += object->resident_page_count;
189 if (object->shadow_count > 1) {
191 totalp->t_vmshr += object->size;
192 totalp->t_rmshr += object->resident_page_count;
193 if (object->flags & OBJ_ACTIVE) {
194 totalp->t_avmshr += object->size;
195 totalp->t_armshr += object->resident_page_count;
199 mtx_unlock(&vm_object_list_mtx);
200 totalp->t_free = cnt.v_free_count + cnt.v_cache_count;
201 return (sysctl_handle_opaque(oidp, totalp, sizeof total, req));
205 * vcnt() - accumulate statistics from all cpus and the global cnt
208 * The vmmeter structure is now per-cpu as well as global. Those
209 * statistics which can be kept on a per-cpu basis (to avoid cache
210 * stalls between cpus) can be moved to the per-cpu vmmeter. Remaining
211 * statistics, such as v_free_reserved, are left in the global
214 * (sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req)
217 vcnt(SYSCTL_HANDLER_ARGS)
220 int count = *(int *)arg1;
223 int offset = (char *)arg1 - (char *)&cnt;
225 for (i = 0; i < mp_ncpus; ++i) {
226 struct pcpu *pcpu = pcpu_find(i);
227 count += *(int *)((char *)&pcpu->pc_cnt + offset);
230 error = SYSCTL_OUT(req, &count, sizeof(int));
234 SYSCTL_PROC(_vm, VM_METER, vmmeter, CTLTYPE_OPAQUE|CTLFLAG_RD,
235 0, sizeof(struct vmtotal), vmtotal, "S,vmtotal",
236 "System virtual memory statistics");
237 SYSCTL_NODE(_vm, OID_AUTO, stats, CTLFLAG_RW, 0, "VM meter stats");
238 SYSCTL_NODE(_vm_stats, OID_AUTO, sys, CTLFLAG_RW, 0, "VM meter sys stats");
239 SYSCTL_NODE(_vm_stats, OID_AUTO, vm, CTLFLAG_RW, 0, "VM meter vm stats");
240 SYSCTL_NODE(_vm_stats, OID_AUTO, misc, CTLFLAG_RW, 0, "VM meter misc stats");
242 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_swtch, CTLTYPE_UINT|CTLFLAG_RD,
243 &cnt.v_swtch, 0, vcnt, "IU", "Context switches");
244 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_trap, CTLTYPE_UINT|CTLFLAG_RD,
245 &cnt.v_trap, 0, vcnt, "IU", "Traps");
246 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_syscall, CTLTYPE_UINT|CTLFLAG_RD,
247 &cnt.v_syscall, 0, vcnt, "IU", "Syscalls");
248 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_intr, CTLTYPE_UINT|CTLFLAG_RD,
249 &cnt.v_intr, 0, vcnt, "IU", "Hardware interrupts");
250 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_soft, CTLTYPE_UINT|CTLFLAG_RD,
251 &cnt.v_soft, 0, vcnt, "IU", "Software interrupts");
252 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vm_faults, CTLTYPE_UINT|CTLFLAG_RD,
253 &cnt.v_vm_faults, 0, vcnt, "IU", "VM faults");
254 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_cow_faults, CTLTYPE_UINT|CTLFLAG_RD,
255 &cnt.v_cow_faults, 0, vcnt, "IU", "COW faults");
256 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_cow_optim, CTLTYPE_UINT|CTLFLAG_RD,
257 &cnt.v_cow_optim, 0, vcnt, "IU", "Optimized COW faults");
258 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_zfod, CTLTYPE_UINT|CTLFLAG_RD,
259 &cnt.v_zfod, 0, vcnt, "IU", "Zero fill");
260 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_ozfod, CTLTYPE_UINT|CTLFLAG_RD,
261 &cnt.v_ozfod, 0, vcnt, "IU", "Optimized zero fill");
262 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_swapin, CTLTYPE_UINT|CTLFLAG_RD,
263 &cnt.v_swapin, 0, vcnt, "IU", "Swapin operations");
264 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_swapout, CTLTYPE_UINT|CTLFLAG_RD,
265 &cnt.v_swapout, 0, vcnt, "IU", "Swapout operations");
266 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_swappgsin, CTLTYPE_UINT|CTLFLAG_RD,
267 &cnt.v_swappgsin, 0, vcnt, "IU", "Swapin pages");
268 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_swappgsout, CTLTYPE_UINT|CTLFLAG_RD,
269 &cnt.v_swappgsout, 0, vcnt, "IU", "Swapout pages");
270 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vnodein, CTLTYPE_UINT|CTLFLAG_RD,
271 &cnt.v_vnodein, 0, vcnt, "IU", "Vnodein operations");
272 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vnodeout, CTLTYPE_UINT|CTLFLAG_RD,
273 &cnt.v_vnodeout, 0, vcnt, "IU", "Vnodeout operations");
274 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vnodepgsin, CTLTYPE_UINT|CTLFLAG_RD,
275 &cnt.v_vnodepgsin, 0, vcnt, "IU", "Vnodein pages");
276 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vnodepgsout, CTLTYPE_UINT|CTLFLAG_RD,
277 &cnt.v_vnodepgsout, 0, vcnt, "IU", "Vnodeout pages");
278 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_intrans, CTLTYPE_UINT|CTLFLAG_RD,
279 &cnt.v_intrans, 0, vcnt, "IU", "In transit page blocking");
280 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_reactivated, CTLTYPE_UINT|CTLFLAG_RD,
281 &cnt.v_reactivated, 0, vcnt, "IU", "Reactivated pages");
282 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_pdwakeups, CTLTYPE_UINT|CTLFLAG_RD,
283 &cnt.v_pdwakeups, 0, vcnt, "IU", "Pagedaemon wakeups");
284 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_pdpages, CTLTYPE_UINT|CTLFLAG_RD,
285 &cnt.v_pdpages, 0, vcnt, "IU", "Pagedaemon page scans");
286 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_dfree, CTLTYPE_UINT|CTLFLAG_RD,
287 &cnt.v_dfree, 0, vcnt, "IU", "");
288 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_pfree, CTLTYPE_UINT|CTLFLAG_RD,
289 &cnt.v_pfree, 0, vcnt, "IU", "");
290 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_tfree, CTLTYPE_UINT|CTLFLAG_RD,
291 &cnt.v_tfree, 0, vcnt, "IU", "");
292 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_page_size, CTLTYPE_UINT|CTLFLAG_RD,
293 &cnt.v_page_size, 0, vcnt, "IU", "");
294 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_page_count, CTLTYPE_UINT|CTLFLAG_RD,
295 &cnt.v_page_count, 0, vcnt, "IU", "");
296 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_free_reserved, CTLTYPE_UINT|CTLFLAG_RD,
297 &cnt.v_free_reserved, 0, vcnt, "IU", "");
298 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_free_target, CTLTYPE_UINT|CTLFLAG_RD,
299 &cnt.v_free_target, 0, vcnt, "IU", "");
300 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_free_min, CTLTYPE_UINT|CTLFLAG_RD,
301 &cnt.v_free_min, 0, vcnt, "IU", "");
302 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_free_count, CTLTYPE_UINT|CTLFLAG_RD,
303 &cnt.v_free_count, 0, vcnt, "IU", "");
304 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_wire_count, CTLTYPE_UINT|CTLFLAG_RD,
305 &cnt.v_wire_count, 0, vcnt, "IU", "");
306 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_active_count, CTLTYPE_UINT|CTLFLAG_RD,
307 &cnt.v_active_count, 0, vcnt, "IU", "");
308 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_inactive_target, CTLTYPE_UINT|CTLFLAG_RD,
309 &cnt.v_inactive_target, 0, vcnt, "IU", "");
310 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_inactive_count, CTLTYPE_UINT|CTLFLAG_RD,
311 &cnt.v_inactive_count, 0, vcnt, "IU", "");
312 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_cache_count, CTLTYPE_UINT|CTLFLAG_RD,
313 &cnt.v_cache_count, 0, vcnt, "IU", "");
314 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_cache_min, CTLTYPE_UINT|CTLFLAG_RD,
315 &cnt.v_cache_min, 0, vcnt, "IU", "");
316 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_cache_max, CTLTYPE_UINT|CTLFLAG_RD,
317 &cnt.v_cache_max, 0, vcnt, "IU", "");
318 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_pageout_free_min, CTLTYPE_UINT|CTLFLAG_RD,
319 &cnt.v_pageout_free_min, 0, vcnt, "IU", "");
320 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_interrupt_free_min, CTLTYPE_UINT|CTLFLAG_RD,
321 &cnt.v_interrupt_free_min, 0, vcnt, "IU", "");
322 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_forks, CTLTYPE_UINT|CTLFLAG_RD,
323 &cnt.v_forks, 0, vcnt, "IU", "Number of fork() calls");
324 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vforks, CTLTYPE_UINT|CTLFLAG_RD,
325 &cnt.v_vforks, 0, vcnt, "IU", "Number of vfork() calls");
326 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_rforks, CTLTYPE_UINT|CTLFLAG_RD,
327 &cnt.v_rforks, 0, vcnt, "IU", "Number of rfork() calls");
328 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_kthreads, CTLTYPE_UINT|CTLFLAG_RD,
329 &cnt.v_kthreads, 0, vcnt, "IU", "Number of fork() calls by kernel");
330 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_forkpages, CTLTYPE_UINT|CTLFLAG_RD,
331 &cnt.v_forkpages, 0, vcnt, "IU", "VM pages affected by fork()");
332 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vforkpages, CTLTYPE_UINT|CTLFLAG_RD,
333 &cnt.v_vforkpages, 0, vcnt, "IU", "VM pages affected by vfork()");
334 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_rforkpages, CTLTYPE_UINT|CTLFLAG_RD,
335 &cnt.v_rforkpages, 0, vcnt, "IU", "VM pages affected by rfork()");
336 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_kthreadpages, CTLTYPE_UINT|CTLFLAG_RD,
337 &cnt.v_kthreadpages, 0, vcnt, "IU", "VM pages affected by fork() by kernel");
339 SYSCTL_INT(_vm_stats_misc, OID_AUTO,
340 zero_page_count, CTLFLAG_RD, &vm_page_zero_count, 0, "");
342 SYSCTL_INT(_vm_stats_misc, OID_AUTO,
343 page_mask, CTLFLAG_RD, &page_mask, 0, "");
344 SYSCTL_INT(_vm_stats_misc, OID_AUTO,
345 page_shift, CTLFLAG_RD, &page_shift, 0, "");
346 SYSCTL_INT(_vm_stats_misc, OID_AUTO,
347 first_page, CTLFLAG_RD, &first_page, 0, "");
348 SYSCTL_INT(_vm_stats_misc, OID_AUTO,
349 last_page, CTLFLAG_RD, &last_page, 0, "");
350 SYSCTL_INT(_vm_stats_misc, OID_AUTO,
351 vm_page_bucket_count, CTLFLAG_RD, &vm_page_bucket_count, 0, "");
352 SYSCTL_INT(_vm_stats_misc, OID_AUTO,
353 vm_page_hash_mask, CTLFLAG_RD, &vm_page_hash_mask, 0, "");