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29 * @(#)vmmeter.h 8.2 (Berkeley) 7/10/94
30 * $FreeBSD: src/sys/sys/vmmeter.h,v 1.21.2.2 2002/10/10 19:28:21 dillon Exp $
33 #ifndef _SYS_VMMETER_H_
34 #define _SYS_VMMETER_H_
37 #include <sys/types.h>
43 * System wide statistics counters.
47 * General system activity.
49 #define vmmeter_uint_begin v_swtch
50 u_int v_swtch; /* context switches */
51 u_int v_trap; /* calls to trap */
52 u_int v_syscall; /* calls to syscall() */
53 u_int v_intr; /* device interrupts */
54 u_int v_ipi; /* inter processor interrupts */
55 u_int v_timer; /* LAPIC timer interrupts */
56 u_int v_soft; /* software interrupts */
58 * Virtual memory activity.
60 u_int v_vm_faults; /* number of address memory faults */
61 u_int v_cow_faults; /* number of copy-on-writes */
62 u_int v_cow_optim; /* number of optimized copy-on-writes */
63 u_int v_zfod; /* pages zero filled on demand */
64 u_int v_ozfod; /* optimized zero fill pages */
65 u_int v_swapin; /* swap pager pageins */
66 u_int v_swapout; /* swap pager pageouts */
67 u_int v_swappgsin; /* swap pager pages paged in */
68 u_int v_swappgsout; /* swap pager pages paged out */
69 u_int v_vnodein; /* vnode pager pageins */
70 u_int v_vnodeout; /* vnode pager pageouts */
71 u_int v_vnodepgsin; /* vnode_pager pages paged in */
72 u_int v_vnodepgsout; /* vnode pager pages paged out */
73 u_int v_intrans; /* intransit blocking page faults */
74 u_int v_reactivated; /* number of pages reactivated from free list */
75 u_int v_pdwakeups; /* number of times daemon has awaken from sleep */
76 u_int v_pdpages; /* number of pages analyzed by daemon */
78 u_int v_dfree; /* pages freed by daemon */
79 u_int v_pfree; /* pages freed by exiting processes */
80 u_int v_tfree; /* total pages freed */
82 * Fork/vfork/rfork activity.
84 u_int v_forks; /* number of fork() calls */
85 u_int v_vforks; /* number of vfork() calls */
86 u_int v_rforks; /* number of rfork() calls */
87 u_int v_exec; /* number of exec() calls */
88 u_int v_kthreads; /* number of fork() calls by kernel */
89 u_int v_forkpages; /* number of VM pages affected by fork() */
90 u_int v_vforkpages; /* number of VM pages affected by vfork() */
91 u_int v_rforkpages; /* number of VM pages affected by rfork() */
92 u_int v_kthreadpages; /* number of VM pages affected by fork() by kernel */
93 u_int v_intrans_coll; /* intransit map collisions (total) */
94 u_int v_intrans_wait; /* intransit map collisions which blocked */
95 u_int v_forwarded_ints; /* forwarded interrupts due to MP lock */
96 u_int v_forwarded_hits;
97 u_int v_forwarded_misses;
98 u_int v_smpinvltlb; /* nasty global invltlbs */
99 u_int v_ppwakeups; /* wakeups on processes stalled on VM */
100 u_int v_lock_colls; /* # of token, lock, or spin collisions */
101 char v_lock_name[16]; /* last-colliding token, lock, or spin name */
102 u_int v_wakeup_colls; /* possible spurious wakeup IPIs */
104 #define vmmeter_uint_end v_reserved7
108 * vmstats structure, global vmstats is the rollup, pcpu vmstats keeps
109 * track of minor (generally positive) adjustments. For moving targets,
110 * the global vmstats structure represents the smallest likely value.
112 * This structure is cache sensitive, separate nominal read-only elements
113 * from variable elements.
117 * Distribution of page usages.
119 u_int v_page_size; /* page size in bytes */
121 long v_page_count; /* total number of pages in system */
122 long v_free_reserved; /* number of pages reserved for deadlock */
123 long v_free_target; /* number of pages desired free */
124 long v_free_min; /* minimum number of pages desired free */
126 long v_cache_min; /* min number of pages desired on cache queue */
127 long v_cache_max; /* max number of pages in cached obj */
128 long v_pageout_free_min; /* min number pages reserved for kernel */
129 long v_interrupt_free_min; /* reserved number of pages for int code */
130 long v_free_severe; /* severe depletion of pages below this pt */
131 long v_dma_pages; /* total dma-reserved pages */
133 long v_unused_fixed[5];
135 long v_free_count; /* number of pages free */
136 long v_wire_count; /* number of pages wired down */
137 long v_active_count; /* number of pages active */
138 long v_inactive_target; /* number of pages desired inactive */
139 long v_inactive_count; /* number of pages inactive */
140 long v_cache_count; /* number of pages on buffer cache queue */
141 long v_dma_avail; /* free dma-reserved pages */
143 long v_unused_variable[9];
148 /* note: vmmeter 'cnt' structure is now per-cpu */
149 extern struct vmstats vmstats;
153 /* systemwide totals computed every five seconds */
155 long t_rq; /* length of the run queue */
156 long t_dw; /* jobs in ``disk wait'' (neg priority) */
157 long t_pw; /* jobs in page wait */
158 long t_sl; /* jobs sleeping in core */
159 long t_sw; /* swapped out runnable/short block jobs */
160 int64_t t_vm; /* total virtual memory */
161 int64_t t_avm; /* active virtual memory */
162 long t_rm; /* total real memory in use */
163 long t_arm; /* active real memory */
164 int64_t t_vmshr; /* shared virtual memory */
165 int64_t t_avmshr; /* active shared virtual memory */
166 long t_rmshr; /* shared real memory */
167 long t_armshr; /* active shared real memory */
168 long t_free; /* free memory pages */
173 * Optional instrumentation.
190 /* data and stack size distribution counters */
194 /* page in time distribution counters */
197 /* reclaim time distribution counters */
205 u_int rectime; /* accumulator for reclaim times */
206 u_int pgintime; /* accumulator for page in times */
208 #endif /* PGINPROF */
212 void vmstats_rollup(void);
213 void vmstats_rollup_cpu(struct globaldata *gd);