Misc interrupts/LWKT 1/2: interlock the idle thread. Put execution of
[dragonfly.git] / sys / vm / vm_meter.c
CommitLineData
984263bc
MD
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 $
1de703da 35 * $DragonFly: src/sys/vm/vm_meter.c,v 1.2 2003/06/17 04:29:00 dillon Exp $
984263bc
MD
36 */
37
38#include <sys/param.h>
39#include <sys/proc.h>
40#include <sys/systm.h>
41#include <sys/kernel.h>
42#include <sys/resource.h>
43#include <sys/vmmeter.h>
44
45#include <vm/vm.h>
46#include <vm/vm_page.h>
47#include <vm/vm_extern.h>
48#include <vm/vm_param.h>
49#include <sys/lock.h>
50#include <vm/pmap.h>
51#include <vm/vm_map.h>
52#include <vm/vm_object.h>
53#include <sys/sysctl.h>
54
55struct vmmeter cnt;
56
57static int maxslp = MAXSLP;
58
59SYSCTL_UINT(_vm, VM_V_FREE_MIN, v_free_min,
60 CTLFLAG_RW, &cnt.v_free_min, 0, "");
61SYSCTL_UINT(_vm, VM_V_FREE_TARGET, v_free_target,
62 CTLFLAG_RW, &cnt.v_free_target, 0, "");
63SYSCTL_UINT(_vm, VM_V_FREE_RESERVED, v_free_reserved,
64 CTLFLAG_RW, &cnt.v_free_reserved, 0, "");
65SYSCTL_UINT(_vm, VM_V_INACTIVE_TARGET, v_inactive_target,
66 CTLFLAG_RW, &cnt.v_inactive_target, 0, "");
67SYSCTL_UINT(_vm, VM_V_CACHE_MIN, v_cache_min,
68 CTLFLAG_RW, &cnt.v_cache_min, 0, "");
69SYSCTL_UINT(_vm, VM_V_CACHE_MAX, v_cache_max,
70 CTLFLAG_RW, &cnt.v_cache_max, 0, "");
71SYSCTL_UINT(_vm, VM_V_PAGEOUT_FREE_MIN, v_pageout_free_min,
72 CTLFLAG_RW, &cnt.v_pageout_free_min, 0, "");
73SYSCTL_UINT(_vm, OID_AUTO, v_free_severe,
74 CTLFLAG_RW, &cnt.v_free_severe, 0, "");
75SYSCTL_UINT(_vm, OID_AUTO, v_intrans_coll,
76 CTLFLAG_RW, &cnt.v_intrans_coll, 0, "");
77SYSCTL_UINT(_vm, OID_AUTO, v_intrans_wait,
78 CTLFLAG_RW, &cnt.v_intrans_wait, 0, "");
79
80SYSCTL_STRUCT(_vm, VM_LOADAVG, loadavg, CTLFLAG_RD,
81 &averunnable, loadavg, "Machine loadaverage history");
82
83static int
84vmtotal(SYSCTL_HANDLER_ARGS)
85{
86 struct proc *p;
87 struct vmtotal total, *totalp;
88 vm_map_entry_t entry;
89 vm_object_t object;
90 vm_map_t map;
91 int paging;
92
93 totalp = &total;
94 bzero(totalp, sizeof *totalp);
95 /*
96 * Mark all objects as inactive.
97 */
98 for (object = TAILQ_FIRST(&vm_object_list);
99 object != NULL;
100 object = TAILQ_NEXT(object,object_list))
101 vm_object_clear_flag(object, OBJ_ACTIVE);
102 /*
103 * Calculate process statistics.
104 */
105 for (p = allproc.lh_first; p != 0; p = p->p_list.le_next) {
106 if (p->p_flag & P_SYSTEM)
107 continue;
108 switch (p->p_stat) {
109 case 0:
110 continue;
111
112 case SSLEEP:
113 case SSTOP:
114 if (p->p_flag & P_INMEM) {
115 if (p->p_priority <= PZERO)
116 totalp->t_dw++;
117 else if (p->p_slptime < maxslp)
118 totalp->t_sl++;
119 } else if (p->p_slptime < maxslp)
120 totalp->t_sw++;
121 if (p->p_slptime >= maxslp)
122 continue;
123 break;
124
125 case SRUN:
126 case SIDL:
127 if (p->p_flag & P_INMEM)
128 totalp->t_rq++;
129 else
130 totalp->t_sw++;
131 if (p->p_stat == SIDL)
132 continue;
133 break;
134 }
135 /*
136 * Note active objects.
137 */
138 paging = 0;
139 for (map = &p->p_vmspace->vm_map, entry = map->header.next;
140 entry != &map->header; entry = entry->next) {
141 if ((entry->eflags & MAP_ENTRY_IS_SUB_MAP) ||
142 entry->object.vm_object == NULL)
143 continue;
144 vm_object_set_flag(entry->object.vm_object, OBJ_ACTIVE);
145 paging |= entry->object.vm_object->paging_in_progress;
146 }
147 if (paging)
148 totalp->t_pw++;
149 }
150 /*
151 * Calculate object memory usage statistics.
152 */
153 for (object = TAILQ_FIRST(&vm_object_list);
154 object != NULL;
155 object = TAILQ_NEXT(object, object_list)) {
156 /*
157 * devices, like /dev/mem, will badly skew our totals
158 */
159 if (object->type == OBJT_DEVICE)
160 continue;
161 totalp->t_vm += object->size;
162 totalp->t_rm += object->resident_page_count;
163 if (object->flags & OBJ_ACTIVE) {
164 totalp->t_avm += object->size;
165 totalp->t_arm += object->resident_page_count;
166 }
167 if (object->shadow_count > 1) {
168 /* shared object */
169 totalp->t_vmshr += object->size;
170 totalp->t_rmshr += object->resident_page_count;
171 if (object->flags & OBJ_ACTIVE) {
172 totalp->t_avmshr += object->size;
173 totalp->t_armshr += object->resident_page_count;
174 }
175 }
176 }
177 totalp->t_free = cnt.v_free_count + cnt.v_cache_count;
178 return (sysctl_handle_opaque(oidp, totalp, sizeof total, req));
179}
180
181SYSCTL_PROC(_vm, VM_METER, vmmeter, CTLTYPE_OPAQUE|CTLFLAG_RD,
182 0, sizeof(struct vmtotal), vmtotal, "S,vmtotal",
183 "System virtual memory statistics");
184SYSCTL_NODE(_vm, OID_AUTO, stats, CTLFLAG_RW, 0, "VM meter stats");
185SYSCTL_NODE(_vm_stats, OID_AUTO, sys, CTLFLAG_RW, 0, "VM meter sys stats");
186SYSCTL_NODE(_vm_stats, OID_AUTO, vm, CTLFLAG_RW, 0, "VM meter vm stats");
187SYSCTL_NODE(_vm_stats, OID_AUTO, misc, CTLFLAG_RW, 0, "VM meter misc stats");
188SYSCTL_UINT(_vm_stats_sys, OID_AUTO,
189 v_swtch, CTLFLAG_RD, &cnt.v_swtch, 0, "Context switches");
190SYSCTL_UINT(_vm_stats_sys, OID_AUTO,
191 v_trap, CTLFLAG_RD, &cnt.v_trap, 0, "Traps");
192SYSCTL_UINT(_vm_stats_sys, OID_AUTO,
193 v_syscall, CTLFLAG_RD, &cnt.v_syscall, 0, "Syscalls");
194SYSCTL_UINT(_vm_stats_sys, OID_AUTO, v_intr, CTLFLAG_RD,
195 &cnt.v_intr, 0, "Hardware interrupts");
196SYSCTL_UINT(_vm_stats_sys, OID_AUTO, v_soft, CTLFLAG_RD,
197 &cnt.v_soft, 0, "Software interrupts");
198SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
199 v_vm_faults, CTLFLAG_RD, &cnt.v_vm_faults, 0, "VM faults");
200SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
201 v_cow_faults, CTLFLAG_RD, &cnt.v_cow_faults, 0, "COW faults");
202SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
203 v_cow_optim, CTLFLAG_RD, &cnt.v_cow_optim, 0, "Optimized COW faults");
204SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
205 v_zfod, CTLFLAG_RD, &cnt.v_zfod, 0, "Zero fill");
206SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
207 v_ozfod, CTLFLAG_RD, &cnt.v_ozfod, 0, "Optimized zero fill");
208SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
209 v_swapin, CTLFLAG_RD, &cnt.v_swapin, 0, "Swapin operations");
210SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
211 v_swapout, CTLFLAG_RD, &cnt.v_swapout, 0, "Swapout operations");
212SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
213 v_swappgsin, CTLFLAG_RD, &cnt.v_swappgsin, 0, "Swapin pages");
214SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
215 v_swappgsout, CTLFLAG_RD, &cnt.v_swappgsout, 0, "Swapout pages");
216SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
217 v_vnodein, CTLFLAG_RD, &cnt.v_vnodein, 0, "Vnodein operations");
218SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
219 v_vnodeout, CTLFLAG_RD, &cnt.v_vnodeout, 0, "Vnodeout operations");
220SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
221 v_vnodepgsin, CTLFLAG_RD, &cnt.v_vnodepgsin, 0, "Vnodein pages");
222SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
223 v_vnodepgsout, CTLFLAG_RD, &cnt.v_vnodepgsout, 0, "Vnodeout pages");
224SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
225 v_intrans, CTLFLAG_RD, &cnt.v_intrans, 0, "In transit page blocking");
226SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
227 v_reactivated, CTLFLAG_RD, &cnt.v_reactivated, 0, "Reactivated pages");
228SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
229 v_pdwakeups, CTLFLAG_RD, &cnt.v_pdwakeups, 0, "Pagedaemon wakeups");
230SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
231 v_pdpages, CTLFLAG_RD, &cnt.v_pdpages, 0, "Pagedaemon page scans");
232SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
233 v_dfree, CTLFLAG_RD, &cnt.v_dfree, 0, "");
234SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
235 v_pfree, CTLFLAG_RD, &cnt.v_pfree, 0, "");
236SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
237 v_tfree, CTLFLAG_RD, &cnt.v_tfree, 0, "");
238SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
239 v_page_size, CTLFLAG_RD, &cnt.v_page_size, 0, "");
240SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
241 v_page_count, CTLFLAG_RD, &cnt.v_page_count, 0, "");
242SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
243 v_free_reserved, CTLFLAG_RD, &cnt.v_free_reserved, 0, "");
244SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
245 v_free_target, CTLFLAG_RD, &cnt.v_free_target, 0, "");
246SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
247 v_free_min, CTLFLAG_RD, &cnt.v_free_min, 0, "");
248SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
249 v_free_count, CTLFLAG_RD, &cnt.v_free_count, 0, "");
250SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
251 v_wire_count, CTLFLAG_RD, &cnt.v_wire_count, 0, "");
252SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
253 v_active_count, CTLFLAG_RD, &cnt.v_active_count, 0, "");
254SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
255 v_inactive_target, CTLFLAG_RD, &cnt.v_inactive_target, 0, "");
256SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
257 v_inactive_count, CTLFLAG_RD, &cnt.v_inactive_count, 0, "");
258SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
259 v_cache_count, CTLFLAG_RD, &cnt.v_cache_count, 0, "");
260SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
261 v_cache_min, CTLFLAG_RD, &cnt.v_cache_min, 0, "");
262SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
263 v_cache_max, CTLFLAG_RD, &cnt.v_cache_max, 0, "");
264SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
265 v_pageout_free_min, CTLFLAG_RD, &cnt.v_pageout_free_min, 0, "");
266SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
267 v_interrupt_free_min, CTLFLAG_RD, &cnt.v_interrupt_free_min, 0, "");
268SYSCTL_INT(_vm_stats_misc, OID_AUTO,
269 zero_page_count, CTLFLAG_RD, &vm_page_zero_count, 0, "");
270SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
271 v_forks, CTLFLAG_RD, &cnt.v_forks, 0, "Number of fork() calls");
272SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
273 v_vforks, CTLFLAG_RD, &cnt.v_vforks, 0, "Number of vfork() calls");
274SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
275 v_rforks, CTLFLAG_RD, &cnt.v_rforks, 0, "Number of rfork() calls");
276SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
277 v_kthreads, CTLFLAG_RD, &cnt.v_kthreads, 0, "Number of fork() calls by kernel");
278SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
279 v_forkpages, CTLFLAG_RD, &cnt.v_forkpages, 0, "VM pages affected by fork()");
280SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
281 v_vforkpages, CTLFLAG_RD, &cnt.v_vforkpages, 0, "VM pages affected by vfork()");
282SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
283 v_rforkpages, CTLFLAG_RD, &cnt.v_rforkpages, 0, "VM pages affected by rfork()");
284SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
285 v_kthreadpages, CTLFLAG_RD, &cnt.v_kthreadpages, 0, "VM pages affected by fork() by kernel");
286#if 0
287SYSCTL_INT(_vm_stats_misc, OID_AUTO,
288 page_mask, CTLFLAG_RD, &page_mask, 0, "");
289SYSCTL_INT(_vm_stats_misc, OID_AUTO,
290 page_shift, CTLFLAG_RD, &page_shift, 0, "");
291SYSCTL_INT(_vm_stats_misc, OID_AUTO,
292 first_page, CTLFLAG_RD, &first_page, 0, "");
293SYSCTL_INT(_vm_stats_misc, OID_AUTO,
294 last_page, CTLFLAG_RD, &last_page, 0, "");
295SYSCTL_INT(_vm_stats_misc, OID_AUTO,
296 vm_page_bucket_count, CTLFLAG_RD, &vm_page_bucket_count, 0, "");
297SYSCTL_INT(_vm_stats_misc, OID_AUTO,
298 vm_page_hash_mask, CTLFLAG_RD, &vm_page_hash_mask, 0, "");
299#endif