Initial import from FreeBSD RELENG_4:
[dragonfly.git] / sys / vm / vm_meter.c
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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: src/sys/vm/vm_meter.c,v 1.34.2.7 2002/10/10 19:28:22 dillon Exp $
35 */
36
37#include <sys/param.h>
38#include <sys/proc.h>
39#include <sys/systm.h>
40#include <sys/kernel.h>
41#include <sys/resource.h>
42#include <sys/vmmeter.h>
43
44#include <vm/vm.h>
45#include <vm/vm_page.h>
46#include <vm/vm_extern.h>
47#include <vm/vm_param.h>
48#include <sys/lock.h>
49#include <vm/pmap.h>
50#include <vm/vm_map.h>
51#include <vm/vm_object.h>
52#include <sys/sysctl.h>
53
54struct vmmeter cnt;
55
56static int maxslp = MAXSLP;
57
58SYSCTL_UINT(_vm, VM_V_FREE_MIN, v_free_min,
59 CTLFLAG_RW, &cnt.v_free_min, 0, "");
60SYSCTL_UINT(_vm, VM_V_FREE_TARGET, v_free_target,
61 CTLFLAG_RW, &cnt.v_free_target, 0, "");
62SYSCTL_UINT(_vm, VM_V_FREE_RESERVED, v_free_reserved,
63 CTLFLAG_RW, &cnt.v_free_reserved, 0, "");
64SYSCTL_UINT(_vm, VM_V_INACTIVE_TARGET, v_inactive_target,
65 CTLFLAG_RW, &cnt.v_inactive_target, 0, "");
66SYSCTL_UINT(_vm, VM_V_CACHE_MIN, v_cache_min,
67 CTLFLAG_RW, &cnt.v_cache_min, 0, "");
68SYSCTL_UINT(_vm, VM_V_CACHE_MAX, v_cache_max,
69 CTLFLAG_RW, &cnt.v_cache_max, 0, "");
70SYSCTL_UINT(_vm, VM_V_PAGEOUT_FREE_MIN, v_pageout_free_min,
71 CTLFLAG_RW, &cnt.v_pageout_free_min, 0, "");
72SYSCTL_UINT(_vm, OID_AUTO, v_free_severe,
73 CTLFLAG_RW, &cnt.v_free_severe, 0, "");
74SYSCTL_UINT(_vm, OID_AUTO, v_intrans_coll,
75 CTLFLAG_RW, &cnt.v_intrans_coll, 0, "");
76SYSCTL_UINT(_vm, OID_AUTO, v_intrans_wait,
77 CTLFLAG_RW, &cnt.v_intrans_wait, 0, "");
78
79SYSCTL_STRUCT(_vm, VM_LOADAVG, loadavg, CTLFLAG_RD,
80 &averunnable, loadavg, "Machine loadaverage history");
81
82static int
83vmtotal(SYSCTL_HANDLER_ARGS)
84{
85 struct proc *p;
86 struct vmtotal total, *totalp;
87 vm_map_entry_t entry;
88 vm_object_t object;
89 vm_map_t map;
90 int paging;
91
92 totalp = &total;
93 bzero(totalp, sizeof *totalp);
94 /*
95 * Mark all objects as inactive.
96 */
97 for (object = TAILQ_FIRST(&vm_object_list);
98 object != NULL;
99 object = TAILQ_NEXT(object,object_list))
100 vm_object_clear_flag(object, OBJ_ACTIVE);
101 /*
102 * Calculate process statistics.
103 */
104 for (p = allproc.lh_first; p != 0; p = p->p_list.le_next) {
105 if (p->p_flag & P_SYSTEM)
106 continue;
107 switch (p->p_stat) {
108 case 0:
109 continue;
110
111 case SSLEEP:
112 case SSTOP:
113 if (p->p_flag & P_INMEM) {
114 if (p->p_priority <= PZERO)
115 totalp->t_dw++;
116 else if (p->p_slptime < maxslp)
117 totalp->t_sl++;
118 } else if (p->p_slptime < maxslp)
119 totalp->t_sw++;
120 if (p->p_slptime >= maxslp)
121 continue;
122 break;
123
124 case SRUN:
125 case SIDL:
126 if (p->p_flag & P_INMEM)
127 totalp->t_rq++;
128 else
129 totalp->t_sw++;
130 if (p->p_stat == SIDL)
131 continue;
132 break;
133 }
134 /*
135 * Note active objects.
136 */
137 paging = 0;
138 for (map = &p->p_vmspace->vm_map, entry = map->header.next;
139 entry != &map->header; entry = entry->next) {
140 if ((entry->eflags & MAP_ENTRY_IS_SUB_MAP) ||
141 entry->object.vm_object == NULL)
142 continue;
143 vm_object_set_flag(entry->object.vm_object, OBJ_ACTIVE);
144 paging |= entry->object.vm_object->paging_in_progress;
145 }
146 if (paging)
147 totalp->t_pw++;
148 }
149 /*
150 * Calculate object memory usage statistics.
151 */
152 for (object = TAILQ_FIRST(&vm_object_list);
153 object != NULL;
154 object = TAILQ_NEXT(object, object_list)) {
155 /*
156 * devices, like /dev/mem, will badly skew our totals
157 */
158 if (object->type == OBJT_DEVICE)
159 continue;
160 totalp->t_vm += object->size;
161 totalp->t_rm += object->resident_page_count;
162 if (object->flags & OBJ_ACTIVE) {
163 totalp->t_avm += object->size;
164 totalp->t_arm += object->resident_page_count;
165 }
166 if (object->shadow_count > 1) {
167 /* shared object */
168 totalp->t_vmshr += object->size;
169 totalp->t_rmshr += object->resident_page_count;
170 if (object->flags & OBJ_ACTIVE) {
171 totalp->t_avmshr += object->size;
172 totalp->t_armshr += object->resident_page_count;
173 }
174 }
175 }
176 totalp->t_free = cnt.v_free_count + cnt.v_cache_count;
177 return (sysctl_handle_opaque(oidp, totalp, sizeof total, req));
178}
179
180SYSCTL_PROC(_vm, VM_METER, vmmeter, CTLTYPE_OPAQUE|CTLFLAG_RD,
181 0, sizeof(struct vmtotal), vmtotal, "S,vmtotal",
182 "System virtual memory statistics");
183SYSCTL_NODE(_vm, OID_AUTO, stats, CTLFLAG_RW, 0, "VM meter stats");
184SYSCTL_NODE(_vm_stats, OID_AUTO, sys, CTLFLAG_RW, 0, "VM meter sys stats");
185SYSCTL_NODE(_vm_stats, OID_AUTO, vm, CTLFLAG_RW, 0, "VM meter vm stats");
186SYSCTL_NODE(_vm_stats, OID_AUTO, misc, CTLFLAG_RW, 0, "VM meter misc stats");
187SYSCTL_UINT(_vm_stats_sys, OID_AUTO,
188 v_swtch, CTLFLAG_RD, &cnt.v_swtch, 0, "Context switches");
189SYSCTL_UINT(_vm_stats_sys, OID_AUTO,
190 v_trap, CTLFLAG_RD, &cnt.v_trap, 0, "Traps");
191SYSCTL_UINT(_vm_stats_sys, OID_AUTO,
192 v_syscall, CTLFLAG_RD, &cnt.v_syscall, 0, "Syscalls");
193SYSCTL_UINT(_vm_stats_sys, OID_AUTO, v_intr, CTLFLAG_RD,
194 &cnt.v_intr, 0, "Hardware interrupts");
195SYSCTL_UINT(_vm_stats_sys, OID_AUTO, v_soft, CTLFLAG_RD,
196 &cnt.v_soft, 0, "Software interrupts");
197SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
198 v_vm_faults, CTLFLAG_RD, &cnt.v_vm_faults, 0, "VM faults");
199SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
200 v_cow_faults, CTLFLAG_RD, &cnt.v_cow_faults, 0, "COW faults");
201SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
202 v_cow_optim, CTLFLAG_RD, &cnt.v_cow_optim, 0, "Optimized COW faults");
203SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
204 v_zfod, CTLFLAG_RD, &cnt.v_zfod, 0, "Zero fill");
205SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
206 v_ozfod, CTLFLAG_RD, &cnt.v_ozfod, 0, "Optimized zero fill");
207SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
208 v_swapin, CTLFLAG_RD, &cnt.v_swapin, 0, "Swapin operations");
209SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
210 v_swapout, CTLFLAG_RD, &cnt.v_swapout, 0, "Swapout operations");
211SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
212 v_swappgsin, CTLFLAG_RD, &cnt.v_swappgsin, 0, "Swapin pages");
213SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
214 v_swappgsout, CTLFLAG_RD, &cnt.v_swappgsout, 0, "Swapout pages");
215SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
216 v_vnodein, CTLFLAG_RD, &cnt.v_vnodein, 0, "Vnodein operations");
217SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
218 v_vnodeout, CTLFLAG_RD, &cnt.v_vnodeout, 0, "Vnodeout operations");
219SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
220 v_vnodepgsin, CTLFLAG_RD, &cnt.v_vnodepgsin, 0, "Vnodein pages");
221SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
222 v_vnodepgsout, CTLFLAG_RD, &cnt.v_vnodepgsout, 0, "Vnodeout pages");
223SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
224 v_intrans, CTLFLAG_RD, &cnt.v_intrans, 0, "In transit page blocking");
225SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
226 v_reactivated, CTLFLAG_RD, &cnt.v_reactivated, 0, "Reactivated pages");
227SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
228 v_pdwakeups, CTLFLAG_RD, &cnt.v_pdwakeups, 0, "Pagedaemon wakeups");
229SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
230 v_pdpages, CTLFLAG_RD, &cnt.v_pdpages, 0, "Pagedaemon page scans");
231SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
232 v_dfree, CTLFLAG_RD, &cnt.v_dfree, 0, "");
233SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
234 v_pfree, CTLFLAG_RD, &cnt.v_pfree, 0, "");
235SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
236 v_tfree, CTLFLAG_RD, &cnt.v_tfree, 0, "");
237SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
238 v_page_size, CTLFLAG_RD, &cnt.v_page_size, 0, "");
239SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
240 v_page_count, CTLFLAG_RD, &cnt.v_page_count, 0, "");
241SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
242 v_free_reserved, CTLFLAG_RD, &cnt.v_free_reserved, 0, "");
243SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
244 v_free_target, CTLFLAG_RD, &cnt.v_free_target, 0, "");
245SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
246 v_free_min, CTLFLAG_RD, &cnt.v_free_min, 0, "");
247SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
248 v_free_count, CTLFLAG_RD, &cnt.v_free_count, 0, "");
249SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
250 v_wire_count, CTLFLAG_RD, &cnt.v_wire_count, 0, "");
251SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
252 v_active_count, CTLFLAG_RD, &cnt.v_active_count, 0, "");
253SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
254 v_inactive_target, CTLFLAG_RD, &cnt.v_inactive_target, 0, "");
255SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
256 v_inactive_count, CTLFLAG_RD, &cnt.v_inactive_count, 0, "");
257SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
258 v_cache_count, CTLFLAG_RD, &cnt.v_cache_count, 0, "");
259SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
260 v_cache_min, CTLFLAG_RD, &cnt.v_cache_min, 0, "");
261SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
262 v_cache_max, CTLFLAG_RD, &cnt.v_cache_max, 0, "");
263SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
264 v_pageout_free_min, CTLFLAG_RD, &cnt.v_pageout_free_min, 0, "");
265SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
266 v_interrupt_free_min, CTLFLAG_RD, &cnt.v_interrupt_free_min, 0, "");
267SYSCTL_INT(_vm_stats_misc, OID_AUTO,
268 zero_page_count, CTLFLAG_RD, &vm_page_zero_count, 0, "");
269SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
270 v_forks, CTLFLAG_RD, &cnt.v_forks, 0, "Number of fork() calls");
271SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
272 v_vforks, CTLFLAG_RD, &cnt.v_vforks, 0, "Number of vfork() calls");
273SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
274 v_rforks, CTLFLAG_RD, &cnt.v_rforks, 0, "Number of rfork() calls");
275SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
276 v_kthreads, CTLFLAG_RD, &cnt.v_kthreads, 0, "Number of fork() calls by kernel");
277SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
278 v_forkpages, CTLFLAG_RD, &cnt.v_forkpages, 0, "VM pages affected by fork()");
279SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
280 v_vforkpages, CTLFLAG_RD, &cnt.v_vforkpages, 0, "VM pages affected by vfork()");
281SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
282 v_rforkpages, CTLFLAG_RD, &cnt.v_rforkpages, 0, "VM pages affected by rfork()");
283SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
284 v_kthreadpages, CTLFLAG_RD, &cnt.v_kthreadpages, 0, "VM pages affected by fork() by kernel");
285#if 0
286SYSCTL_INT(_vm_stats_misc, OID_AUTO,
287 page_mask, CTLFLAG_RD, &page_mask, 0, "");
288SYSCTL_INT(_vm_stats_misc, OID_AUTO,
289 page_shift, CTLFLAG_RD, &page_shift, 0, "");
290SYSCTL_INT(_vm_stats_misc, OID_AUTO,
291 first_page, CTLFLAG_RD, &first_page, 0, "");
292SYSCTL_INT(_vm_stats_misc, OID_AUTO,
293 last_page, CTLFLAG_RD, &last_page, 0, "");
294SYSCTL_INT(_vm_stats_misc, OID_AUTO,
295 vm_page_bucket_count, CTLFLAG_RD, &vm_page_bucket_count, 0, "");
296SYSCTL_INT(_vm_stats_misc, OID_AUTO,
297 vm_page_hash_mask, CTLFLAG_RD, &vm_page_hash_mask, 0, "");
298#endif