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 * 4. 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 * @(#)vm_meter.c 8.4 (Berkeley) 1/4/94
30 */
31
32#include <sys/cdefs.h>
| 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 * 4. 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 * @(#)vm_meter.c 8.4 (Berkeley) 1/4/94
30 */
31
32#include <sys/cdefs.h>
|
33__FBSDID("$FreeBSD: head/sys/vm/vm_meter.c 248084 2013-03-09 02:32:23Z attilio $");
| 33__FBSDID("$FreeBSD: head/sys/vm/vm_meter.c 263620 2014-03-22 10:26:09Z bdrewery $");
|
34
35#include <sys/param.h>
36#include <sys/systm.h>
37#include <sys/kernel.h>
38#include <sys/lock.h>
39#include <sys/mutex.h>
40#include <sys/proc.h>
41#include <sys/resource.h>
42#include <sys/rwlock.h>
43#include <sys/sx.h>
44#include <sys/vmmeter.h>
45#include <sys/smp.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
| 34
35#include <sys/param.h>
36#include <sys/systm.h>
37#include <sys/kernel.h>
38#include <sys/lock.h>
39#include <sys/mutex.h>
40#include <sys/proc.h>
41#include <sys/resource.h>
42#include <sys/rwlock.h>
43#include <sys/sx.h>
44#include <sys/vmmeter.h>
45#include <sys/smp.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
|
56struct vmmeter cnt;
| 56struct vmmeter vm_cnt;
|
57
58SYSCTL_UINT(_vm, VM_V_FREE_MIN, v_free_min,
| 57
58SYSCTL_UINT(_vm, VM_V_FREE_MIN, v_free_min,
|
59 CTLFLAG_RW, &cnt.v_free_min, 0, "Minimum low-free-pages threshold");
| 59 CTLFLAG_RW, &vm_cnt.v_free_min, 0, "Minimum low-free-pages threshold");
|
60SYSCTL_UINT(_vm, VM_V_FREE_TARGET, v_free_target,
| 60SYSCTL_UINT(_vm, VM_V_FREE_TARGET, v_free_target,
|
61 CTLFLAG_RW, &cnt.v_free_target, 0, "Desired free pages");
| 61 CTLFLAG_RW, &vm_cnt.v_free_target, 0, "Desired free pages");
|
62SYSCTL_UINT(_vm, VM_V_FREE_RESERVED, v_free_reserved,
| 62SYSCTL_UINT(_vm, VM_V_FREE_RESERVED, v_free_reserved,
|
63 CTLFLAG_RW, &cnt.v_free_reserved, 0, "Pages reserved for deadlock");
| 63 CTLFLAG_RW, &vm_cnt.v_free_reserved, 0, "Pages reserved for deadlock");
|
64SYSCTL_UINT(_vm, VM_V_INACTIVE_TARGET, v_inactive_target,
| 64SYSCTL_UINT(_vm, VM_V_INACTIVE_TARGET, v_inactive_target,
|
65 CTLFLAG_RW, &cnt.v_inactive_target, 0, "Pages desired inactive");
| 65 CTLFLAG_RW, &vm_cnt.v_inactive_target, 0, "Pages desired inactive");
|
66SYSCTL_UINT(_vm, VM_V_CACHE_MIN, v_cache_min,
| 66SYSCTL_UINT(_vm, VM_V_CACHE_MIN, v_cache_min,
|
67 CTLFLAG_RW, &cnt.v_cache_min, 0, "Min pages on cache queue");
| 67 CTLFLAG_RW, &vm_cnt.v_cache_min, 0, "Min pages on cache queue");
|
68SYSCTL_UINT(_vm, VM_V_CACHE_MAX, v_cache_max,
| 68SYSCTL_UINT(_vm, VM_V_CACHE_MAX, v_cache_max,
|
69 CTLFLAG_RW, &cnt.v_cache_max, 0, "Max pages on cache queue");
| 69 CTLFLAG_RW, &vm_cnt.v_cache_max, 0, "Max pages on cache queue");
|
70SYSCTL_UINT(_vm, VM_V_PAGEOUT_FREE_MIN, v_pageout_free_min,
| 70SYSCTL_UINT(_vm, VM_V_PAGEOUT_FREE_MIN, v_pageout_free_min,
|
71 CTLFLAG_RW, &cnt.v_pageout_free_min, 0, "Min pages reserved for kernel");
| 71 CTLFLAG_RW, &vm_cnt.v_pageout_free_min, 0, "Min pages reserved for kernel");
|
72SYSCTL_UINT(_vm, OID_AUTO, v_free_severe,
| 72SYSCTL_UINT(_vm, OID_AUTO, v_free_severe,
|
73 CTLFLAG_RW, &cnt.v_free_severe, 0, "Severe page depletion point");
| 73 CTLFLAG_RW, &vm_cnt.v_free_severe, 0, "Severe page depletion point");
|
74
75static int
76sysctl_vm_loadavg(SYSCTL_HANDLER_ARGS)
77{
78
79#ifdef SCTL_MASK32
80 u_int32_t la[4];
81
82 if (req->flags & SCTL_MASK32) {
83 la[0] = averunnable.ldavg[0];
84 la[1] = averunnable.ldavg[1];
85 la[2] = averunnable.ldavg[2];
86 la[3] = averunnable.fscale;
87 return SYSCTL_OUT(req, la, sizeof(la));
88 } else
89#endif
90 return SYSCTL_OUT(req, &averunnable, sizeof(averunnable));
91}
92SYSCTL_PROC(_vm, VM_LOADAVG, loadavg, CTLTYPE_STRUCT | CTLFLAG_RD |
93 CTLFLAG_MPSAFE, NULL, 0, sysctl_vm_loadavg, "S,loadavg",
94 "Machine loadaverage history");
95
96static int
97vmtotal(SYSCTL_HANDLER_ARGS)
98{
99 struct proc *p;
100 struct vmtotal total;
101 vm_map_entry_t entry;
102 vm_object_t object;
103 vm_map_t map;
104 int paging;
105 struct thread *td;
106 struct vmspace *vm;
107
108 bzero(&total, sizeof(total));
109 /*
110 * Mark all objects as inactive.
111 */
112 mtx_lock(&vm_object_list_mtx);
113 TAILQ_FOREACH(object, &vm_object_list, object_list) {
114 if (!VM_OBJECT_TRYWLOCK(object)) {
115 /*
116 * Avoid a lock-order reversal. Consequently,
117 * the reported number of active pages may be
118 * greater than the actual number.
119 */
120 continue;
121 }
122 vm_object_clear_flag(object, OBJ_ACTIVE);
123 VM_OBJECT_WUNLOCK(object);
124 }
125 mtx_unlock(&vm_object_list_mtx);
126 /*
127 * Calculate process statistics.
128 */
129 sx_slock(&allproc_lock);
130 FOREACH_PROC_IN_SYSTEM(p) {
131 if (p->p_flag & P_SYSTEM)
132 continue;
133 PROC_LOCK(p);
134 switch (p->p_state) {
135 case PRS_NEW:
136 PROC_UNLOCK(p);
137 continue;
138 break;
139 default:
140 FOREACH_THREAD_IN_PROC(p, td) {
141 thread_lock(td);
142 switch (td->td_state) {
143 case TDS_INHIBITED:
144 if (TD_IS_SWAPPED(td))
145 total.t_sw++;
146 else if (TD_IS_SLEEPING(td) &&
147 td->td_priority <= PZERO)
148 total.t_dw++;
149 else
150 total.t_sl++;
151 break;
152
153 case TDS_CAN_RUN:
154 total.t_sw++;
155 break;
156 case TDS_RUNQ:
157 case TDS_RUNNING:
158 total.t_rq++;
159 thread_unlock(td);
160 continue;
161 default:
162 break;
163 }
164 thread_unlock(td);
165 }
166 }
167 PROC_UNLOCK(p);
168 /*
169 * Note active objects.
170 */
171 paging = 0;
172 vm = vmspace_acquire_ref(p);
173 if (vm == NULL)
174 continue;
175 map = &vm->vm_map;
176 vm_map_lock_read(map);
177 for (entry = map->header.next;
178 entry != &map->header; entry = entry->next) {
179 if ((entry->eflags & MAP_ENTRY_IS_SUB_MAP) ||
180 (object = entry->object.vm_object) == NULL)
181 continue;
182 VM_OBJECT_WLOCK(object);
183 vm_object_set_flag(object, OBJ_ACTIVE);
184 paging |= object->paging_in_progress;
185 VM_OBJECT_WUNLOCK(object);
186 }
187 vm_map_unlock_read(map);
188 vmspace_free(vm);
189 if (paging)
190 total.t_pw++;
191 }
192 sx_sunlock(&allproc_lock);
193 /*
194 * Calculate object memory usage statistics.
195 */
196 mtx_lock(&vm_object_list_mtx);
197 TAILQ_FOREACH(object, &vm_object_list, object_list) {
198 /*
199 * Perform unsynchronized reads on the object to avoid
200 * a lock-order reversal. In this case, the lack of
201 * synchronization should not impair the accuracy of
202 * the reported statistics.
203 */
204 if ((object->flags & OBJ_FICTITIOUS) != 0) {
205 /*
206 * Devices, like /dev/mem, will badly skew our totals.
207 */
208 continue;
209 }
210 if (object->ref_count == 0) {
211 /*
212 * Also skip unreferenced objects, including
213 * vnodes representing mounted file systems.
214 */
215 continue;
216 }
217 total.t_vm += object->size;
218 total.t_rm += object->resident_page_count;
219 if (object->flags & OBJ_ACTIVE) {
220 total.t_avm += object->size;
221 total.t_arm += object->resident_page_count;
222 }
223 if (object->shadow_count > 1) {
224 /* shared object */
225 total.t_vmshr += object->size;
226 total.t_rmshr += object->resident_page_count;
227 if (object->flags & OBJ_ACTIVE) {
228 total.t_avmshr += object->size;
229 total.t_armshr += object->resident_page_count;
230 }
231 }
232 }
233 mtx_unlock(&vm_object_list_mtx);
| 74
75static int
76sysctl_vm_loadavg(SYSCTL_HANDLER_ARGS)
77{
78
79#ifdef SCTL_MASK32
80 u_int32_t la[4];
81
82 if (req->flags & SCTL_MASK32) {
83 la[0] = averunnable.ldavg[0];
84 la[1] = averunnable.ldavg[1];
85 la[2] = averunnable.ldavg[2];
86 la[3] = averunnable.fscale;
87 return SYSCTL_OUT(req, la, sizeof(la));
88 } else
89#endif
90 return SYSCTL_OUT(req, &averunnable, sizeof(averunnable));
91}
92SYSCTL_PROC(_vm, VM_LOADAVG, loadavg, CTLTYPE_STRUCT | CTLFLAG_RD |
93 CTLFLAG_MPSAFE, NULL, 0, sysctl_vm_loadavg, "S,loadavg",
94 "Machine loadaverage history");
95
96static int
97vmtotal(SYSCTL_HANDLER_ARGS)
98{
99 struct proc *p;
100 struct vmtotal total;
101 vm_map_entry_t entry;
102 vm_object_t object;
103 vm_map_t map;
104 int paging;
105 struct thread *td;
106 struct vmspace *vm;
107
108 bzero(&total, sizeof(total));
109 /*
110 * Mark all objects as inactive.
111 */
112 mtx_lock(&vm_object_list_mtx);
113 TAILQ_FOREACH(object, &vm_object_list, object_list) {
114 if (!VM_OBJECT_TRYWLOCK(object)) {
115 /*
116 * Avoid a lock-order reversal. Consequently,
117 * the reported number of active pages may be
118 * greater than the actual number.
119 */
120 continue;
121 }
122 vm_object_clear_flag(object, OBJ_ACTIVE);
123 VM_OBJECT_WUNLOCK(object);
124 }
125 mtx_unlock(&vm_object_list_mtx);
126 /*
127 * Calculate process statistics.
128 */
129 sx_slock(&allproc_lock);
130 FOREACH_PROC_IN_SYSTEM(p) {
131 if (p->p_flag & P_SYSTEM)
132 continue;
133 PROC_LOCK(p);
134 switch (p->p_state) {
135 case PRS_NEW:
136 PROC_UNLOCK(p);
137 continue;
138 break;
139 default:
140 FOREACH_THREAD_IN_PROC(p, td) {
141 thread_lock(td);
142 switch (td->td_state) {
143 case TDS_INHIBITED:
144 if (TD_IS_SWAPPED(td))
145 total.t_sw++;
146 else if (TD_IS_SLEEPING(td) &&
147 td->td_priority <= PZERO)
148 total.t_dw++;
149 else
150 total.t_sl++;
151 break;
152
153 case TDS_CAN_RUN:
154 total.t_sw++;
155 break;
156 case TDS_RUNQ:
157 case TDS_RUNNING:
158 total.t_rq++;
159 thread_unlock(td);
160 continue;
161 default:
162 break;
163 }
164 thread_unlock(td);
165 }
166 }
167 PROC_UNLOCK(p);
168 /*
169 * Note active objects.
170 */
171 paging = 0;
172 vm = vmspace_acquire_ref(p);
173 if (vm == NULL)
174 continue;
175 map = &vm->vm_map;
176 vm_map_lock_read(map);
177 for (entry = map->header.next;
178 entry != &map->header; entry = entry->next) {
179 if ((entry->eflags & MAP_ENTRY_IS_SUB_MAP) ||
180 (object = entry->object.vm_object) == NULL)
181 continue;
182 VM_OBJECT_WLOCK(object);
183 vm_object_set_flag(object, OBJ_ACTIVE);
184 paging |= object->paging_in_progress;
185 VM_OBJECT_WUNLOCK(object);
186 }
187 vm_map_unlock_read(map);
188 vmspace_free(vm);
189 if (paging)
190 total.t_pw++;
191 }
192 sx_sunlock(&allproc_lock);
193 /*
194 * Calculate object memory usage statistics.
195 */
196 mtx_lock(&vm_object_list_mtx);
197 TAILQ_FOREACH(object, &vm_object_list, object_list) {
198 /*
199 * Perform unsynchronized reads on the object to avoid
200 * a lock-order reversal. In this case, the lack of
201 * synchronization should not impair the accuracy of
202 * the reported statistics.
203 */
204 if ((object->flags & OBJ_FICTITIOUS) != 0) {
205 /*
206 * Devices, like /dev/mem, will badly skew our totals.
207 */
208 continue;
209 }
210 if (object->ref_count == 0) {
211 /*
212 * Also skip unreferenced objects, including
213 * vnodes representing mounted file systems.
214 */
215 continue;
216 }
217 total.t_vm += object->size;
218 total.t_rm += object->resident_page_count;
219 if (object->flags & OBJ_ACTIVE) {
220 total.t_avm += object->size;
221 total.t_arm += object->resident_page_count;
222 }
223 if (object->shadow_count > 1) {
224 /* shared object */
225 total.t_vmshr += object->size;
226 total.t_rmshr += object->resident_page_count;
227 if (object->flags & OBJ_ACTIVE) {
228 total.t_avmshr += object->size;
229 total.t_armshr += object->resident_page_count;
230 }
231 }
232 }
233 mtx_unlock(&vm_object_list_mtx);
|
234 total.t_free = cnt.v_free_count + cnt.v_cache_count;
| 234 total.t_free = vm_cnt.v_free_count + vm_cnt.v_cache_count;
|
235 return (sysctl_handle_opaque(oidp, &total, sizeof(total), req));
236}
237
238/*
239 * vcnt() - accumulate statistics from all cpus and the global cnt
240 * structure.
241 *
242 * The vmmeter structure is now per-cpu as well as global. Those
243 * statistics which can be kept on a per-cpu basis (to avoid cache
244 * stalls between cpus) can be moved to the per-cpu vmmeter. Remaining
245 * statistics, such as v_free_reserved, are left in the global
246 * structure.
247 *
248 * (sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req)
249 */
250static int
251vcnt(SYSCTL_HANDLER_ARGS)
252{
253 int count = *(int *)arg1;
| 235 return (sysctl_handle_opaque(oidp, &total, sizeof(total), req));
236}
237
238/*
239 * vcnt() - accumulate statistics from all cpus and the global cnt
240 * structure.
241 *
242 * The vmmeter structure is now per-cpu as well as global. Those
243 * statistics which can be kept on a per-cpu basis (to avoid cache
244 * stalls between cpus) can be moved to the per-cpu vmmeter. Remaining
245 * statistics, such as v_free_reserved, are left in the global
246 * structure.
247 *
248 * (sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req)
249 */
250static int
251vcnt(SYSCTL_HANDLER_ARGS)
252{
253 int count = *(int *)arg1;
|
254 int offset = (char *)arg1 - (char *)&cnt;
| 254 int offset = (char *)arg1 - (char *)&vm_cnt;
|
255 int i;
256
257 CPU_FOREACH(i) {
258 struct pcpu *pcpu = pcpu_find(i);
259 count += *(int *)((char *)&pcpu->pc_cnt + offset);
260 }
261 return (SYSCTL_OUT(req, &count, sizeof(int)));
262}
263
264SYSCTL_PROC(_vm, VM_TOTAL, vmtotal, CTLTYPE_OPAQUE|CTLFLAG_RD|CTLFLAG_MPSAFE,
265 0, sizeof(struct vmtotal), vmtotal, "S,vmtotal",
266 "System virtual memory statistics");
267SYSCTL_NODE(_vm, OID_AUTO, stats, CTLFLAG_RW, 0, "VM meter stats");
268static SYSCTL_NODE(_vm_stats, OID_AUTO, sys, CTLFLAG_RW, 0,
269 "VM meter sys stats");
270static SYSCTL_NODE(_vm_stats, OID_AUTO, vm, CTLFLAG_RW, 0,
271 "VM meter vm stats");
272SYSCTL_NODE(_vm_stats, OID_AUTO, misc, CTLFLAG_RW, 0, "VM meter misc stats");
273
274#define VM_STATS(parent, var, descr) \
275 SYSCTL_PROC(parent, OID_AUTO, var, \
| 255 int i;
256
257 CPU_FOREACH(i) {
258 struct pcpu *pcpu = pcpu_find(i);
259 count += *(int *)((char *)&pcpu->pc_cnt + offset);
260 }
261 return (SYSCTL_OUT(req, &count, sizeof(int)));
262}
263
264SYSCTL_PROC(_vm, VM_TOTAL, vmtotal, CTLTYPE_OPAQUE|CTLFLAG_RD|CTLFLAG_MPSAFE,
265 0, sizeof(struct vmtotal), vmtotal, "S,vmtotal",
266 "System virtual memory statistics");
267SYSCTL_NODE(_vm, OID_AUTO, stats, CTLFLAG_RW, 0, "VM meter stats");
268static SYSCTL_NODE(_vm_stats, OID_AUTO, sys, CTLFLAG_RW, 0,
269 "VM meter sys stats");
270static SYSCTL_NODE(_vm_stats, OID_AUTO, vm, CTLFLAG_RW, 0,
271 "VM meter vm stats");
272SYSCTL_NODE(_vm_stats, OID_AUTO, misc, CTLFLAG_RW, 0, "VM meter misc stats");
273
274#define VM_STATS(parent, var, descr) \
275 SYSCTL_PROC(parent, OID_AUTO, var, \
|
276 CTLTYPE_UINT | CTLFLAG_RD | CTLFLAG_MPSAFE, &cnt.var, 0, vcnt, \
| 276 CTLTYPE_UINT | CTLFLAG_RD | CTLFLAG_MPSAFE, &vm_cnt.var, 0, vcnt, \
|
277 "IU", descr)
278#define VM_STATS_VM(var, descr) VM_STATS(_vm_stats_vm, var, descr)
279#define VM_STATS_SYS(var, descr) VM_STATS(_vm_stats_sys, var, descr)
280
281VM_STATS_SYS(v_swtch, "Context switches");
282VM_STATS_SYS(v_trap, "Traps");
283VM_STATS_SYS(v_syscall, "System calls");
284VM_STATS_SYS(v_intr, "Device interrupts");
285VM_STATS_SYS(v_soft, "Software interrupts");
286VM_STATS_VM(v_vm_faults, "Address memory faults");
287VM_STATS_VM(v_io_faults, "Page faults requiring I/O");
288VM_STATS_VM(v_cow_faults, "Copy-on-write faults");
289VM_STATS_VM(v_cow_optim, "Optimized COW faults");
290VM_STATS_VM(v_zfod, "Pages zero-filled on demand");
291VM_STATS_VM(v_ozfod, "Optimized zero fill pages");
292VM_STATS_VM(v_swapin, "Swap pager pageins");
293VM_STATS_VM(v_swapout, "Swap pager pageouts");
294VM_STATS_VM(v_swappgsin, "Swap pages swapped in");
295VM_STATS_VM(v_swappgsout, "Swap pages swapped out");
296VM_STATS_VM(v_vnodein, "Vnode pager pageins");
297VM_STATS_VM(v_vnodeout, "Vnode pager pageouts");
298VM_STATS_VM(v_vnodepgsin, "Vnode pages paged in");
299VM_STATS_VM(v_vnodepgsout, "Vnode pages paged out");
300VM_STATS_VM(v_intrans, "In transit page faults");
301VM_STATS_VM(v_reactivated, "Pages reactivated from free list");
302VM_STATS_VM(v_pdwakeups, "Pagedaemon wakeups");
303VM_STATS_VM(v_pdpages, "Pages analyzed by pagedaemon");
304VM_STATS_VM(v_tcached, "Total pages cached");
305VM_STATS_VM(v_dfree, "Pages freed by pagedaemon");
306VM_STATS_VM(v_pfree, "Pages freed by exiting processes");
307VM_STATS_VM(v_tfree, "Total pages freed");
308VM_STATS_VM(v_page_size, "Page size in bytes");
309VM_STATS_VM(v_page_count, "Total number of pages in system");
310VM_STATS_VM(v_free_reserved, "Pages reserved for deadlock");
311VM_STATS_VM(v_free_target, "Pages desired free");
312VM_STATS_VM(v_free_min, "Minimum low-free-pages threshold");
313VM_STATS_VM(v_free_count, "Free pages");
314VM_STATS_VM(v_wire_count, "Wired pages");
315VM_STATS_VM(v_active_count, "Active pages");
316VM_STATS_VM(v_inactive_target, "Desired inactive pages");
317VM_STATS_VM(v_inactive_count, "Inactive pages");
318VM_STATS_VM(v_cache_count, "Pages on cache queue");
319VM_STATS_VM(v_cache_min, "Min pages on cache queue");
320VM_STATS_VM(v_cache_max, "Max pages on cached queue");
321VM_STATS_VM(v_pageout_free_min, "Min pages reserved for kernel");
322VM_STATS_VM(v_interrupt_free_min, "Reserved pages for interrupt code");
323VM_STATS_VM(v_forks, "Number of fork() calls");
324VM_STATS_VM(v_vforks, "Number of vfork() calls");
325VM_STATS_VM(v_rforks, "Number of rfork() calls");
326VM_STATS_VM(v_kthreads, "Number of fork() calls by kernel");
327VM_STATS_VM(v_forkpages, "VM pages affected by fork()");
328VM_STATS_VM(v_vforkpages, "VM pages affected by vfork()");
329VM_STATS_VM(v_rforkpages, "VM pages affected by rfork()");
330VM_STATS_VM(v_kthreadpages, "VM pages affected by fork() by kernel");
331
332SYSCTL_INT(_vm_stats_misc, OID_AUTO, zero_page_count, CTLFLAG_RD,
333 &vm_page_zero_count, 0, "Number of zero-ed free pages");
| 277 "IU", descr)
278#define VM_STATS_VM(var, descr) VM_STATS(_vm_stats_vm, var, descr)
279#define VM_STATS_SYS(var, descr) VM_STATS(_vm_stats_sys, var, descr)
280
281VM_STATS_SYS(v_swtch, "Context switches");
282VM_STATS_SYS(v_trap, "Traps");
283VM_STATS_SYS(v_syscall, "System calls");
284VM_STATS_SYS(v_intr, "Device interrupts");
285VM_STATS_SYS(v_soft, "Software interrupts");
286VM_STATS_VM(v_vm_faults, "Address memory faults");
287VM_STATS_VM(v_io_faults, "Page faults requiring I/O");
288VM_STATS_VM(v_cow_faults, "Copy-on-write faults");
289VM_STATS_VM(v_cow_optim, "Optimized COW faults");
290VM_STATS_VM(v_zfod, "Pages zero-filled on demand");
291VM_STATS_VM(v_ozfod, "Optimized zero fill pages");
292VM_STATS_VM(v_swapin, "Swap pager pageins");
293VM_STATS_VM(v_swapout, "Swap pager pageouts");
294VM_STATS_VM(v_swappgsin, "Swap pages swapped in");
295VM_STATS_VM(v_swappgsout, "Swap pages swapped out");
296VM_STATS_VM(v_vnodein, "Vnode pager pageins");
297VM_STATS_VM(v_vnodeout, "Vnode pager pageouts");
298VM_STATS_VM(v_vnodepgsin, "Vnode pages paged in");
299VM_STATS_VM(v_vnodepgsout, "Vnode pages paged out");
300VM_STATS_VM(v_intrans, "In transit page faults");
301VM_STATS_VM(v_reactivated, "Pages reactivated from free list");
302VM_STATS_VM(v_pdwakeups, "Pagedaemon wakeups");
303VM_STATS_VM(v_pdpages, "Pages analyzed by pagedaemon");
304VM_STATS_VM(v_tcached, "Total pages cached");
305VM_STATS_VM(v_dfree, "Pages freed by pagedaemon");
306VM_STATS_VM(v_pfree, "Pages freed by exiting processes");
307VM_STATS_VM(v_tfree, "Total pages freed");
308VM_STATS_VM(v_page_size, "Page size in bytes");
309VM_STATS_VM(v_page_count, "Total number of pages in system");
310VM_STATS_VM(v_free_reserved, "Pages reserved for deadlock");
311VM_STATS_VM(v_free_target, "Pages desired free");
312VM_STATS_VM(v_free_min, "Minimum low-free-pages threshold");
313VM_STATS_VM(v_free_count, "Free pages");
314VM_STATS_VM(v_wire_count, "Wired pages");
315VM_STATS_VM(v_active_count, "Active pages");
316VM_STATS_VM(v_inactive_target, "Desired inactive pages");
317VM_STATS_VM(v_inactive_count, "Inactive pages");
318VM_STATS_VM(v_cache_count, "Pages on cache queue");
319VM_STATS_VM(v_cache_min, "Min pages on cache queue");
320VM_STATS_VM(v_cache_max, "Max pages on cached queue");
321VM_STATS_VM(v_pageout_free_min, "Min pages reserved for kernel");
322VM_STATS_VM(v_interrupt_free_min, "Reserved pages for interrupt code");
323VM_STATS_VM(v_forks, "Number of fork() calls");
324VM_STATS_VM(v_vforks, "Number of vfork() calls");
325VM_STATS_VM(v_rforks, "Number of rfork() calls");
326VM_STATS_VM(v_kthreads, "Number of fork() calls by kernel");
327VM_STATS_VM(v_forkpages, "VM pages affected by fork()");
328VM_STATS_VM(v_vforkpages, "VM pages affected by vfork()");
329VM_STATS_VM(v_rforkpages, "VM pages affected by rfork()");
330VM_STATS_VM(v_kthreadpages, "VM pages affected by fork() by kernel");
331
332SYSCTL_INT(_vm_stats_misc, OID_AUTO, zero_page_count, CTLFLAG_RD,
333 &vm_page_zero_count, 0, "Number of zero-ed free pages");
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