Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
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 * 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("$FreeBSD$"); 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/sx.h> 43 #include <sys/vmmeter.h> 44 #include <sys/smp.h> 45 46 #include <vm/vm.h> 47 #include <vm/vm_page.h> 48 #include <vm/vm_extern.h> 49 #include <vm/vm_param.h> 50 #include <vm/pmap.h> 51 #include <vm/vm_map.h> 52 #include <vm/vm_object.h> 53 #include <sys/sysctl.h> 54 55 struct vmmeter cnt; 56 57 SYSCTL_UINT(_vm, VM_V_FREE_MIN, v_free_min, 58 CTLFLAG_RW, &cnt.v_free_min, 0, ""); 59 SYSCTL_UINT(_vm, VM_V_FREE_TARGET, v_free_target, 60 CTLFLAG_RW, &cnt.v_free_target, 0, ""); 61 SYSCTL_UINT(_vm, VM_V_FREE_RESERVED, v_free_reserved, 62 CTLFLAG_RW, &cnt.v_free_reserved, 0, ""); 63 SYSCTL_UINT(_vm, VM_V_INACTIVE_TARGET, v_inactive_target, 64 CTLFLAG_RW, &cnt.v_inactive_target, 0, ""); 65 SYSCTL_UINT(_vm, VM_V_CACHE_MIN, v_cache_min, 66 CTLFLAG_RW, &cnt.v_cache_min, 0, ""); 67 SYSCTL_UINT(_vm, VM_V_CACHE_MAX, v_cache_max, 68 CTLFLAG_RW, &cnt.v_cache_max, 0, ""); 69 SYSCTL_UINT(_vm, VM_V_PAGEOUT_FREE_MIN, v_pageout_free_min, 70 CTLFLAG_RW, &cnt.v_pageout_free_min, 0, ""); 71 SYSCTL_UINT(_vm, OID_AUTO, v_free_severe, 72 CTLFLAG_RW, &cnt.v_free_severe, 0, ""); 73 74 static int 75 sysctl_vm_loadavg(SYSCTL_HANDLER_ARGS) 76 { 77 78 #ifdef SCTL_MASK32 79 u_int32_t la[4]; 80 81 if (req->flags & SCTL_MASK32) { 82 la[0] = averunnable.ldavg[0]; 83 la[1] = averunnable.ldavg[1]; 84 la[2] = averunnable.ldavg[2]; 85 la[3] = averunnable.fscale; 86 return SYSCTL_OUT(req, la, sizeof(la)); 87 } else 88 #endif 89 return SYSCTL_OUT(req, &averunnable, sizeof(averunnable)); 90 } 91 SYSCTL_PROC(_vm, VM_LOADAVG, loadavg, CTLTYPE_STRUCT | CTLFLAG_RD | 92 CTLFLAG_MPSAFE, NULL, 0, sysctl_vm_loadavg, "S,loadavg", 93 "Machine loadaverage history"); 94 95 static int 96 vmtotal(SYSCTL_HANDLER_ARGS) 97 { 98 struct proc *p; 99 struct vmtotal total; 100 vm_map_entry_t entry; 101 vm_object_t object; 102 vm_map_t map; 103 int paging; 104 struct thread *td; 105 struct vmspace *vm; 106 107 bzero(&total, sizeof(total)); 108 /* 109 * Mark all objects as inactive. 110 */ 111 mtx_lock(&vm_object_list_mtx); 112 TAILQ_FOREACH(object, &vm_object_list, object_list) { 113 VM_OBJECT_LOCK(object); 114 vm_object_clear_flag(object, OBJ_ACTIVE); 115 VM_OBJECT_UNLOCK(object); 116 } 117 mtx_unlock(&vm_object_list_mtx); 118 /* 119 * Calculate process statistics. 120 */ 121 sx_slock(&allproc_lock); 122 FOREACH_PROC_IN_SYSTEM(p) { 123 if (p->p_flag & P_SYSTEM) 124 continue; 125 PROC_LOCK(p); 126 switch (p->p_state) { 127 case PRS_NEW: 128 PROC_UNLOCK(p); 129 continue; 130 break; 131 default: 132 FOREACH_THREAD_IN_PROC(p, td) { 133 thread_lock(td); 134 switch (td->td_state) { 135 case TDS_INHIBITED: 136 if (TD_IS_SWAPPED(td)) 137 total.t_sw++; 138 else if (TD_IS_SLEEPING(td) && 139 td->td_priority <= PZERO) 140 total.t_dw++; 141 else 142 total.t_sl++; 143 break; 144 145 case TDS_CAN_RUN: 146 total.t_sw++; 147 break; 148 case TDS_RUNQ: 149 case TDS_RUNNING: 150 total.t_rq++; 151 thread_unlock(td); 152 continue; 153 default: 154 break; 155 } 156 thread_unlock(td); 157 } 158 } 159 PROC_UNLOCK(p); 160 /* 161 * Note active objects. 162 */ 163 paging = 0; 164 vm = vmspace_acquire_ref(p); 165 if (vm == NULL) 166 continue; 167 map = &vm->vm_map; 168 vm_map_lock_read(map); 169 for (entry = map->header.next; 170 entry != &map->header; entry = entry->next) { 171 if ((entry->eflags & MAP_ENTRY_IS_SUB_MAP) || 172 (object = entry->object.vm_object) == NULL) 173 continue; 174 VM_OBJECT_LOCK(object); 175 vm_object_set_flag(object, OBJ_ACTIVE); 176 paging |= object->paging_in_progress; 177 VM_OBJECT_UNLOCK(object); 178 } 179 vm_map_unlock_read(map); 180 vmspace_free(vm); 181 if (paging) 182 total.t_pw++; 183 } 184 sx_sunlock(&allproc_lock); 185 /* 186 * Calculate object memory usage statistics. 187 */ 188 mtx_lock(&vm_object_list_mtx); 189 TAILQ_FOREACH(object, &vm_object_list, object_list) { 190 /* 191 * Perform unsynchronized reads on the object. In 192 * this case, the lack of synchronization should not 193 * impair the accuracy of the reported statistics. 194 */ 195 if (object->type == OBJT_DEVICE || object->type == OBJT_SG) { 196 /* 197 * Devices, like /dev/mem, will badly skew our totals. 198 */ 199 continue; 200 } 201 if (object->ref_count == 0) { 202 /* 203 * Also skip unreferenced objects, including 204 * vnodes representing mounted file systems. 205 */ 206 continue; 207 } 208 total.t_vm += object->size; 209 total.t_rm += object->resident_page_count; 210 if (object->flags & OBJ_ACTIVE) { 211 total.t_avm += object->size; 212 total.t_arm += object->resident_page_count; 213 } 214 if (object->shadow_count > 1) { 215 /* shared object */ 216 total.t_vmshr += object->size; 217 total.t_rmshr += object->resident_page_count; 218 if (object->flags & OBJ_ACTIVE) { 219 total.t_avmshr += object->size; 220 total.t_armshr += object->resident_page_count; 221 } 222 } 223 } 224 mtx_unlock(&vm_object_list_mtx); 225 total.t_free = cnt.v_free_count + cnt.v_cache_count; 226 return (sysctl_handle_opaque(oidp, &total, sizeof(total), req)); 227 } 228 229 /* 230 * vcnt() - accumulate statistics from all cpus and the global cnt 231 * structure. 232 * 233 * The vmmeter structure is now per-cpu as well as global. Those 234 * statistics which can be kept on a per-cpu basis (to avoid cache 235 * stalls between cpus) can be moved to the per-cpu vmmeter. Remaining 236 * statistics, such as v_free_reserved, are left in the global 237 * structure. 238 * 239 * (sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req) 240 */ 241 static int 242 vcnt(SYSCTL_HANDLER_ARGS) 243 { 244 int count = *(int *)arg1; 245 int offset = (char *)arg1 - (char *)&cnt; 246 int i; 247 248 CPU_FOREACH(i) { 249 struct pcpu *pcpu = pcpu_find(i); 250 count += *(int *)((char *)&pcpu->pc_cnt + offset); 251 } 252 return (SYSCTL_OUT(req, &count, sizeof(int))); 253 } 254 255 SYSCTL_PROC(_vm, VM_TOTAL, vmtotal, CTLTYPE_OPAQUE|CTLFLAG_RD|CTLFLAG_MPSAFE, 256 0, sizeof(struct vmtotal), vmtotal, "S,vmtotal", 257 "System virtual memory statistics"); 258 SYSCTL_NODE(_vm, OID_AUTO, stats, CTLFLAG_RW, 0, "VM meter stats"); 259 static SYSCTL_NODE(_vm_stats, OID_AUTO, sys, CTLFLAG_RW, 0, 260 "VM meter sys stats"); 261 static SYSCTL_NODE(_vm_stats, OID_AUTO, vm, CTLFLAG_RW, 0, 262 "VM meter vm stats"); 263 SYSCTL_NODE(_vm_stats, OID_AUTO, misc, CTLFLAG_RW, 0, "VM meter misc stats"); 264 265 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_swtch, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 266 &cnt.v_swtch, 0, vcnt, "IU", "Context switches"); 267 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_trap, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 268 &cnt.v_trap, 0, vcnt, "IU", "Traps"); 269 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_syscall, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 270 &cnt.v_syscall, 0, vcnt, "IU", "Syscalls"); 271 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_intr, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 272 &cnt.v_intr, 0, vcnt, "IU", "Hardware interrupts"); 273 SYSCTL_PROC(_vm_stats_sys, OID_AUTO, v_soft, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 274 &cnt.v_soft, 0, vcnt, "IU", "Software interrupts"); 275 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vm_faults, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 276 &cnt.v_vm_faults, 0, vcnt, "IU", "VM faults"); 277 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_cow_faults, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 278 &cnt.v_cow_faults, 0, vcnt, "IU", "COW faults"); 279 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_cow_optim, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 280 &cnt.v_cow_optim, 0, vcnt, "IU", "Optimized COW faults"); 281 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_zfod, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 282 &cnt.v_zfod, 0, vcnt, "IU", "Zero fill"); 283 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_ozfod, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 284 &cnt.v_ozfod, 0, vcnt, "IU", "Optimized zero fill"); 285 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_swapin, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 286 &cnt.v_swapin, 0, vcnt, "IU", "Swapin operations"); 287 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_swapout, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 288 &cnt.v_swapout, 0, vcnt, "IU", "Swapout operations"); 289 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_swappgsin, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 290 &cnt.v_swappgsin, 0, vcnt, "IU", "Swapin pages"); 291 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_swappgsout, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 292 &cnt.v_swappgsout, 0, vcnt, "IU", "Swapout pages"); 293 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vnodein, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 294 &cnt.v_vnodein, 0, vcnt, "IU", "Vnodein operations"); 295 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vnodeout, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 296 &cnt.v_vnodeout, 0, vcnt, "IU", "Vnodeout operations"); 297 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vnodepgsin, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 298 &cnt.v_vnodepgsin, 0, vcnt, "IU", "Vnodein pages"); 299 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vnodepgsout, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 300 &cnt.v_vnodepgsout, 0, vcnt, "IU", "Vnodeout pages"); 301 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_intrans, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 302 &cnt.v_intrans, 0, vcnt, "IU", "In transit page blocking"); 303 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_reactivated, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 304 &cnt.v_reactivated, 0, vcnt, "IU", "Reactivated pages"); 305 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_pdwakeups, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 306 &cnt.v_pdwakeups, 0, vcnt, "IU", "Pagedaemon wakeups"); 307 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_pdpages, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 308 &cnt.v_pdpages, 0, vcnt, "IU", "Pagedaemon page scans"); 309 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_tcached, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 310 &cnt.v_tcached, 0, vcnt, "IU", "Total pages cached"); 311 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_dfree, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 312 &cnt.v_dfree, 0, vcnt, "IU", ""); 313 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_pfree, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 314 &cnt.v_pfree, 0, vcnt, "IU", ""); 315 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_tfree, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 316 &cnt.v_tfree, 0, vcnt, "IU", ""); 317 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_page_size, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 318 &cnt.v_page_size, 0, vcnt, "IU", ""); 319 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_page_count, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 320 &cnt.v_page_count, 0, vcnt, "IU", ""); 321 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_free_reserved, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 322 &cnt.v_free_reserved, 0, vcnt, "IU", ""); 323 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_free_target, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 324 &cnt.v_free_target, 0, vcnt, "IU", ""); 325 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_free_min, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 326 &cnt.v_free_min, 0, vcnt, "IU", ""); 327 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_free_count, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 328 &cnt.v_free_count, 0, vcnt, "IU", ""); 329 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_wire_count, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 330 &cnt.v_wire_count, 0, vcnt, "IU", ""); 331 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_active_count, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 332 &cnt.v_active_count, 0, vcnt, "IU", ""); 333 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_inactive_target, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 334 &cnt.v_inactive_target, 0, vcnt, "IU", ""); 335 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_inactive_count, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 336 &cnt.v_inactive_count, 0, vcnt, "IU", ""); 337 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_cache_count, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 338 &cnt.v_cache_count, 0, vcnt, "IU", ""); 339 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_cache_min, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 340 &cnt.v_cache_min, 0, vcnt, "IU", ""); 341 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_cache_max, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 342 &cnt.v_cache_max, 0, vcnt, "IU", ""); 343 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_pageout_free_min, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 344 &cnt.v_pageout_free_min, 0, vcnt, "IU", ""); 345 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_interrupt_free_min, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 346 &cnt.v_interrupt_free_min, 0, vcnt, "IU", ""); 347 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_forks, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 348 &cnt.v_forks, 0, vcnt, "IU", "Number of fork() calls"); 349 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vforks, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 350 &cnt.v_vforks, 0, vcnt, "IU", "Number of vfork() calls"); 351 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_rforks, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 352 &cnt.v_rforks, 0, vcnt, "IU", "Number of rfork() calls"); 353 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_kthreads, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 354 &cnt.v_kthreads, 0, vcnt, "IU", "Number of fork() calls by kernel"); 355 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_forkpages, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 356 &cnt.v_forkpages, 0, vcnt, "IU", "VM pages affected by fork()"); 357 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_vforkpages, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 358 &cnt.v_vforkpages, 0, vcnt, "IU", "VM pages affected by vfork()"); 359 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_rforkpages, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 360 &cnt.v_rforkpages, 0, vcnt, "IU", "VM pages affected by rfork()"); 361 SYSCTL_PROC(_vm_stats_vm, OID_AUTO, v_kthreadpages, CTLTYPE_UINT|CTLFLAG_RD|CTLFLAG_MPSAFE, 362 &cnt.v_kthreadpages, 0, vcnt, "IU", "VM pages affected by fork() by kernel"); 363 364 SYSCTL_INT(_vm_stats_misc, OID_AUTO, 365 zero_page_count, CTLFLAG_RD, &vm_page_zero_count, 0, "");
Cache object: be810c8e5f8e321994143c852fbbf70b
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