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15 * This product includes software developed by the University of
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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 * $DragonFly: src/sys/vm/vm_meter.c,v 1.2 2003/06/17 04:29:00 dillon Exp $
38 #include <sys/param.h>
40 #include <sys/systm.h>
41 #include <sys/kernel.h>
42 #include <sys/resource.h>
43 #include <sys/vmmeter.h>
46 #include <vm/vm_page.h>
47 #include <vm/vm_extern.h>
48 #include <vm/vm_param.h>
51 #include <vm/vm_map.h>
52 #include <vm/vm_object.h>
53 #include <sys/sysctl.h>
57 static int maxslp = MAXSLP;
59 SYSCTL_UINT(_vm, VM_V_FREE_MIN, v_free_min,
60 CTLFLAG_RW, &cnt.v_free_min, 0, "");
61 SYSCTL_UINT(_vm, VM_V_FREE_TARGET, v_free_target,
62 CTLFLAG_RW, &cnt.v_free_target, 0, "");
63 SYSCTL_UINT(_vm, VM_V_FREE_RESERVED, v_free_reserved,
64 CTLFLAG_RW, &cnt.v_free_reserved, 0, "");
65 SYSCTL_UINT(_vm, VM_V_INACTIVE_TARGET, v_inactive_target,
66 CTLFLAG_RW, &cnt.v_inactive_target, 0, "");
67 SYSCTL_UINT(_vm, VM_V_CACHE_MIN, v_cache_min,
68 CTLFLAG_RW, &cnt.v_cache_min, 0, "");
69 SYSCTL_UINT(_vm, VM_V_CACHE_MAX, v_cache_max,
70 CTLFLAG_RW, &cnt.v_cache_max, 0, "");
71 SYSCTL_UINT(_vm, VM_V_PAGEOUT_FREE_MIN, v_pageout_free_min,
72 CTLFLAG_RW, &cnt.v_pageout_free_min, 0, "");
73 SYSCTL_UINT(_vm, OID_AUTO, v_free_severe,
74 CTLFLAG_RW, &cnt.v_free_severe, 0, "");
75 SYSCTL_UINT(_vm, OID_AUTO, v_intrans_coll,
76 CTLFLAG_RW, &cnt.v_intrans_coll, 0, "");
77 SYSCTL_UINT(_vm, OID_AUTO, v_intrans_wait,
78 CTLFLAG_RW, &cnt.v_intrans_wait, 0, "");
80 SYSCTL_STRUCT(_vm, VM_LOADAVG, loadavg, CTLFLAG_RD,
81 &averunnable, loadavg, "Machine loadaverage history");
84 vmtotal(SYSCTL_HANDLER_ARGS)
87 struct vmtotal total, *totalp;
94 bzero(totalp, sizeof *totalp);
96 * Mark all objects as inactive.
98 for (object = TAILQ_FIRST(&vm_object_list);
100 object = TAILQ_NEXT(object,object_list))
101 vm_object_clear_flag(object, OBJ_ACTIVE);
103 * Calculate process statistics.
105 for (p = allproc.lh_first; p != 0; p = p->p_list.le_next) {
106 if (p->p_flag & P_SYSTEM)
114 if (p->p_flag & P_INMEM) {
115 if (p->p_priority <= PZERO)
117 else if (p->p_slptime < maxslp)
119 } else if (p->p_slptime < maxslp)
121 if (p->p_slptime >= maxslp)
127 if (p->p_flag & P_INMEM)
131 if (p->p_stat == SIDL)
136 * Note active objects.
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)
144 vm_object_set_flag(entry->object.vm_object, OBJ_ACTIVE);
145 paging |= entry->object.vm_object->paging_in_progress;
151 * Calculate object memory usage statistics.
153 for (object = TAILQ_FIRST(&vm_object_list);
155 object = TAILQ_NEXT(object, object_list)) {
157 * devices, like /dev/mem, will badly skew our totals
159 if (object->type == OBJT_DEVICE)
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;
167 if (object->shadow_count > 1) {
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;
177 totalp->t_free = cnt.v_free_count + cnt.v_cache_count;
178 return (sysctl_handle_opaque(oidp, totalp, sizeof total, req));
181 SYSCTL_PROC(_vm, VM_METER, vmmeter, CTLTYPE_OPAQUE|CTLFLAG_RD,
182 0, sizeof(struct vmtotal), vmtotal, "S,vmtotal",
183 "System virtual memory statistics");
184 SYSCTL_NODE(_vm, OID_AUTO, stats, CTLFLAG_RW, 0, "VM meter stats");
185 SYSCTL_NODE(_vm_stats, OID_AUTO, sys, CTLFLAG_RW, 0, "VM meter sys stats");
186 SYSCTL_NODE(_vm_stats, OID_AUTO, vm, CTLFLAG_RW, 0, "VM meter vm stats");
187 SYSCTL_NODE(_vm_stats, OID_AUTO, misc, CTLFLAG_RW, 0, "VM meter misc stats");
188 SYSCTL_UINT(_vm_stats_sys, OID_AUTO,
189 v_swtch, CTLFLAG_RD, &cnt.v_swtch, 0, "Context switches");
190 SYSCTL_UINT(_vm_stats_sys, OID_AUTO,
191 v_trap, CTLFLAG_RD, &cnt.v_trap, 0, "Traps");
192 SYSCTL_UINT(_vm_stats_sys, OID_AUTO,
193 v_syscall, CTLFLAG_RD, &cnt.v_syscall, 0, "Syscalls");
194 SYSCTL_UINT(_vm_stats_sys, OID_AUTO, v_intr, CTLFLAG_RD,
195 &cnt.v_intr, 0, "Hardware interrupts");
196 SYSCTL_UINT(_vm_stats_sys, OID_AUTO, v_soft, CTLFLAG_RD,
197 &cnt.v_soft, 0, "Software interrupts");
198 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
199 v_vm_faults, CTLFLAG_RD, &cnt.v_vm_faults, 0, "VM faults");
200 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
201 v_cow_faults, CTLFLAG_RD, &cnt.v_cow_faults, 0, "COW faults");
202 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
203 v_cow_optim, CTLFLAG_RD, &cnt.v_cow_optim, 0, "Optimized COW faults");
204 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
205 v_zfod, CTLFLAG_RD, &cnt.v_zfod, 0, "Zero fill");
206 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
207 v_ozfod, CTLFLAG_RD, &cnt.v_ozfod, 0, "Optimized zero fill");
208 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
209 v_swapin, CTLFLAG_RD, &cnt.v_swapin, 0, "Swapin operations");
210 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
211 v_swapout, CTLFLAG_RD, &cnt.v_swapout, 0, "Swapout operations");
212 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
213 v_swappgsin, CTLFLAG_RD, &cnt.v_swappgsin, 0, "Swapin pages");
214 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
215 v_swappgsout, CTLFLAG_RD, &cnt.v_swappgsout, 0, "Swapout pages");
216 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
217 v_vnodein, CTLFLAG_RD, &cnt.v_vnodein, 0, "Vnodein operations");
218 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
219 v_vnodeout, CTLFLAG_RD, &cnt.v_vnodeout, 0, "Vnodeout operations");
220 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
221 v_vnodepgsin, CTLFLAG_RD, &cnt.v_vnodepgsin, 0, "Vnodein pages");
222 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
223 v_vnodepgsout, CTLFLAG_RD, &cnt.v_vnodepgsout, 0, "Vnodeout pages");
224 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
225 v_intrans, CTLFLAG_RD, &cnt.v_intrans, 0, "In transit page blocking");
226 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
227 v_reactivated, CTLFLAG_RD, &cnt.v_reactivated, 0, "Reactivated pages");
228 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
229 v_pdwakeups, CTLFLAG_RD, &cnt.v_pdwakeups, 0, "Pagedaemon wakeups");
230 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
231 v_pdpages, CTLFLAG_RD, &cnt.v_pdpages, 0, "Pagedaemon page scans");
232 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
233 v_dfree, CTLFLAG_RD, &cnt.v_dfree, 0, "");
234 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
235 v_pfree, CTLFLAG_RD, &cnt.v_pfree, 0, "");
236 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
237 v_tfree, CTLFLAG_RD, &cnt.v_tfree, 0, "");
238 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
239 v_page_size, CTLFLAG_RD, &cnt.v_page_size, 0, "");
240 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
241 v_page_count, CTLFLAG_RD, &cnt.v_page_count, 0, "");
242 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
243 v_free_reserved, CTLFLAG_RD, &cnt.v_free_reserved, 0, "");
244 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
245 v_free_target, CTLFLAG_RD, &cnt.v_free_target, 0, "");
246 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
247 v_free_min, CTLFLAG_RD, &cnt.v_free_min, 0, "");
248 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
249 v_free_count, CTLFLAG_RD, &cnt.v_free_count, 0, "");
250 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
251 v_wire_count, CTLFLAG_RD, &cnt.v_wire_count, 0, "");
252 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
253 v_active_count, CTLFLAG_RD, &cnt.v_active_count, 0, "");
254 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
255 v_inactive_target, CTLFLAG_RD, &cnt.v_inactive_target, 0, "");
256 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
257 v_inactive_count, CTLFLAG_RD, &cnt.v_inactive_count, 0, "");
258 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
259 v_cache_count, CTLFLAG_RD, &cnt.v_cache_count, 0, "");
260 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
261 v_cache_min, CTLFLAG_RD, &cnt.v_cache_min, 0, "");
262 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
263 v_cache_max, CTLFLAG_RD, &cnt.v_cache_max, 0, "");
264 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
265 v_pageout_free_min, CTLFLAG_RD, &cnt.v_pageout_free_min, 0, "");
266 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
267 v_interrupt_free_min, CTLFLAG_RD, &cnt.v_interrupt_free_min, 0, "");
268 SYSCTL_INT(_vm_stats_misc, OID_AUTO,
269 zero_page_count, CTLFLAG_RD, &vm_page_zero_count, 0, "");
270 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
271 v_forks, CTLFLAG_RD, &cnt.v_forks, 0, "Number of fork() calls");
272 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
273 v_vforks, CTLFLAG_RD, &cnt.v_vforks, 0, "Number of vfork() calls");
274 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
275 v_rforks, CTLFLAG_RD, &cnt.v_rforks, 0, "Number of rfork() calls");
276 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
277 v_kthreads, CTLFLAG_RD, &cnt.v_kthreads, 0, "Number of fork() calls by kernel");
278 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
279 v_forkpages, CTLFLAG_RD, &cnt.v_forkpages, 0, "VM pages affected by fork()");
280 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
281 v_vforkpages, CTLFLAG_RD, &cnt.v_vforkpages, 0, "VM pages affected by vfork()");
282 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
283 v_rforkpages, CTLFLAG_RD, &cnt.v_rforkpages, 0, "VM pages affected by rfork()");
284 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
285 v_kthreadpages, CTLFLAG_RD, &cnt.v_kthreadpages, 0, "VM pages affected by fork() by kernel");
287 SYSCTL_INT(_vm_stats_misc, OID_AUTO,
288 page_mask, CTLFLAG_RD, &page_mask, 0, "");
289 SYSCTL_INT(_vm_stats_misc, OID_AUTO,
290 page_shift, CTLFLAG_RD, &page_shift, 0, "");
291 SYSCTL_INT(_vm_stats_misc, OID_AUTO,
292 first_page, CTLFLAG_RD, &first_page, 0, "");
293 SYSCTL_INT(_vm_stats_misc, OID_AUTO,
294 last_page, CTLFLAG_RD, &last_page, 0, "");
295 SYSCTL_INT(_vm_stats_misc, OID_AUTO,
296 vm_page_bucket_count, CTLFLAG_RD, &vm_page_bucket_count, 0, "");
297 SYSCTL_INT(_vm_stats_misc, OID_AUTO,
298 vm_page_hash_mask, CTLFLAG_RD, &vm_page_hash_mask, 0, "");