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6 * modification, are permitted provided that the following conditions
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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 1.3 2003/06/30 19:50:32 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) {
116 if (p->p_priority <= PZERO)
118 else if (p->p_slptime < maxslp)
120 } else if (p->p_slptime < maxslp)
122 if (p->p_slptime >= maxslp)
128 if (p->p_flag & P_INMEM)
132 if (p->p_stat == SIDL)
137 * Note active objects.
140 for (map = &p->p_vmspace->vm_map, entry = map->header.next;
141 entry != &map->header; entry = entry->next) {
142 if ((entry->eflags & MAP_ENTRY_IS_SUB_MAP) ||
143 entry->object.vm_object == NULL)
145 vm_object_set_flag(entry->object.vm_object, OBJ_ACTIVE);
146 paging |= entry->object.vm_object->paging_in_progress;
152 * Calculate object memory usage statistics.
154 for (object = TAILQ_FIRST(&vm_object_list);
156 object = TAILQ_NEXT(object, object_list)) {
158 * devices, like /dev/mem, will badly skew our totals
160 if (object->type == OBJT_DEVICE)
162 totalp->t_vm += object->size;
163 totalp->t_rm += object->resident_page_count;
164 if (object->flags & OBJ_ACTIVE) {
165 totalp->t_avm += object->size;
166 totalp->t_arm += object->resident_page_count;
168 if (object->shadow_count > 1) {
170 totalp->t_vmshr += object->size;
171 totalp->t_rmshr += object->resident_page_count;
172 if (object->flags & OBJ_ACTIVE) {
173 totalp->t_avmshr += object->size;
174 totalp->t_armshr += object->resident_page_count;
178 totalp->t_free = cnt.v_free_count + cnt.v_cache_count;
179 return (sysctl_handle_opaque(oidp, totalp, sizeof total, req));
182 SYSCTL_PROC(_vm, VM_METER, vmmeter, CTLTYPE_OPAQUE|CTLFLAG_RD,
183 0, sizeof(struct vmtotal), vmtotal, "S,vmtotal",
184 "System virtual memory statistics");
185 SYSCTL_NODE(_vm, OID_AUTO, stats, CTLFLAG_RW, 0, "VM meter stats");
186 SYSCTL_NODE(_vm_stats, OID_AUTO, sys, CTLFLAG_RW, 0, "VM meter sys stats");
187 SYSCTL_NODE(_vm_stats, OID_AUTO, vm, CTLFLAG_RW, 0, "VM meter vm stats");
188 SYSCTL_NODE(_vm_stats, OID_AUTO, misc, CTLFLAG_RW, 0, "VM meter misc stats");
189 SYSCTL_UINT(_vm_stats_sys, OID_AUTO,
190 v_swtch, CTLFLAG_RD, &cnt.v_swtch, 0, "Context switches");
191 SYSCTL_UINT(_vm_stats_sys, OID_AUTO,
192 v_trap, CTLFLAG_RD, &cnt.v_trap, 0, "Traps");
193 SYSCTL_UINT(_vm_stats_sys, OID_AUTO,
194 v_syscall, CTLFLAG_RD, &cnt.v_syscall, 0, "Syscalls");
195 SYSCTL_UINT(_vm_stats_sys, OID_AUTO, v_intr, CTLFLAG_RD,
196 &cnt.v_intr, 0, "Hardware interrupts");
197 SYSCTL_UINT(_vm_stats_sys, OID_AUTO, v_soft, CTLFLAG_RD,
198 &cnt.v_soft, 0, "Software interrupts");
199 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
200 v_vm_faults, CTLFLAG_RD, &cnt.v_vm_faults, 0, "VM faults");
201 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
202 v_cow_faults, CTLFLAG_RD, &cnt.v_cow_faults, 0, "COW faults");
203 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
204 v_cow_optim, CTLFLAG_RD, &cnt.v_cow_optim, 0, "Optimized COW faults");
205 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
206 v_zfod, CTLFLAG_RD, &cnt.v_zfod, 0, "Zero fill");
207 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
208 v_ozfod, CTLFLAG_RD, &cnt.v_ozfod, 0, "Optimized zero fill");
209 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
210 v_swapin, CTLFLAG_RD, &cnt.v_swapin, 0, "Swapin operations");
211 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
212 v_swapout, CTLFLAG_RD, &cnt.v_swapout, 0, "Swapout operations");
213 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
214 v_swappgsin, CTLFLAG_RD, &cnt.v_swappgsin, 0, "Swapin pages");
215 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
216 v_swappgsout, CTLFLAG_RD, &cnt.v_swappgsout, 0, "Swapout pages");
217 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
218 v_vnodein, CTLFLAG_RD, &cnt.v_vnodein, 0, "Vnodein operations");
219 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
220 v_vnodeout, CTLFLAG_RD, &cnt.v_vnodeout, 0, "Vnodeout operations");
221 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
222 v_vnodepgsin, CTLFLAG_RD, &cnt.v_vnodepgsin, 0, "Vnodein pages");
223 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
224 v_vnodepgsout, CTLFLAG_RD, &cnt.v_vnodepgsout, 0, "Vnodeout pages");
225 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
226 v_intrans, CTLFLAG_RD, &cnt.v_intrans, 0, "In transit page blocking");
227 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
228 v_reactivated, CTLFLAG_RD, &cnt.v_reactivated, 0, "Reactivated pages");
229 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
230 v_pdwakeups, CTLFLAG_RD, &cnt.v_pdwakeups, 0, "Pagedaemon wakeups");
231 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
232 v_pdpages, CTLFLAG_RD, &cnt.v_pdpages, 0, "Pagedaemon page scans");
233 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
234 v_dfree, CTLFLAG_RD, &cnt.v_dfree, 0, "");
235 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
236 v_pfree, CTLFLAG_RD, &cnt.v_pfree, 0, "");
237 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
238 v_tfree, CTLFLAG_RD, &cnt.v_tfree, 0, "");
239 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
240 v_page_size, CTLFLAG_RD, &cnt.v_page_size, 0, "");
241 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
242 v_page_count, CTLFLAG_RD, &cnt.v_page_count, 0, "");
243 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
244 v_free_reserved, CTLFLAG_RD, &cnt.v_free_reserved, 0, "");
245 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
246 v_free_target, CTLFLAG_RD, &cnt.v_free_target, 0, "");
247 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
248 v_free_min, CTLFLAG_RD, &cnt.v_free_min, 0, "");
249 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
250 v_free_count, CTLFLAG_RD, &cnt.v_free_count, 0, "");
251 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
252 v_wire_count, CTLFLAG_RD, &cnt.v_wire_count, 0, "");
253 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
254 v_active_count, CTLFLAG_RD, &cnt.v_active_count, 0, "");
255 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
256 v_inactive_target, CTLFLAG_RD, &cnt.v_inactive_target, 0, "");
257 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
258 v_inactive_count, CTLFLAG_RD, &cnt.v_inactive_count, 0, "");
259 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
260 v_cache_count, CTLFLAG_RD, &cnt.v_cache_count, 0, "");
261 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
262 v_cache_min, CTLFLAG_RD, &cnt.v_cache_min, 0, "");
263 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
264 v_cache_max, CTLFLAG_RD, &cnt.v_cache_max, 0, "");
265 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
266 v_pageout_free_min, CTLFLAG_RD, &cnt.v_pageout_free_min, 0, "");
267 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
268 v_interrupt_free_min, CTLFLAG_RD, &cnt.v_interrupt_free_min, 0, "");
269 SYSCTL_INT(_vm_stats_misc, OID_AUTO,
270 zero_page_count, CTLFLAG_RD, &vm_page_zero_count, 0, "");
271 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
272 v_forks, CTLFLAG_RD, &cnt.v_forks, 0, "Number of fork() calls");
273 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
274 v_vforks, CTLFLAG_RD, &cnt.v_vforks, 0, "Number of vfork() calls");
275 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
276 v_rforks, CTLFLAG_RD, &cnt.v_rforks, 0, "Number of rfork() calls");
277 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
278 v_kthreads, CTLFLAG_RD, &cnt.v_kthreads, 0, "Number of fork() calls by kernel");
279 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
280 v_forkpages, CTLFLAG_RD, &cnt.v_forkpages, 0, "VM pages affected by fork()");
281 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
282 v_vforkpages, CTLFLAG_RD, &cnt.v_vforkpages, 0, "VM pages affected by vfork()");
283 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
284 v_rforkpages, CTLFLAG_RD, &cnt.v_rforkpages, 0, "VM pages affected by rfork()");
285 SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
286 v_kthreadpages, CTLFLAG_RD, &cnt.v_kthreadpages, 0, "VM pages affected by fork() by kernel");
288 SYSCTL_INT(_vm_stats_misc, OID_AUTO,
289 page_mask, CTLFLAG_RD, &page_mask, 0, "");
290 SYSCTL_INT(_vm_stats_misc, OID_AUTO,
291 page_shift, CTLFLAG_RD, &page_shift, 0, "");
292 SYSCTL_INT(_vm_stats_misc, OID_AUTO,
293 first_page, CTLFLAG_RD, &first_page, 0, "");
294 SYSCTL_INT(_vm_stats_misc, OID_AUTO,
295 last_page, CTLFLAG_RD, &last_page, 0, "");
296 SYSCTL_INT(_vm_stats_misc, OID_AUTO,
297 vm_page_bucket_count, CTLFLAG_RD, &vm_page_bucket_count, 0, "");
298 SYSCTL_INT(_vm_stats_misc, OID_AUTO,
299 vm_page_hash_mask, CTLFLAG_RD, &vm_page_hash_mask, 0, "");