/*- * Copyright (c) 1982, 1986, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)vmmeter.h 8.2 (Berkeley) 7/10/94 * $FreeBSD: src/sys/sys/vmmeter.h,v 1.21.2.2 2002/10/10 19:28:21 dillon Exp $ */ #ifndef _SYS_VMMETER_H_ #define _SYS_VMMETER_H_ #ifndef _SYS_TYPES_H_ #include <sys/types.h> #endif struct globaldata; /* * System wide statistics counters. */ struct vmmeter { /* * General system activity. */ #define vmmeter_uint_begin v_swtch u_int v_swtch; /* context switches */ u_int v_trap; /* calls to trap */ u_int v_syscall; /* calls to syscall() */ u_int v_intr; /* device interrupts */ u_int v_ipi; /* inter processor interrupts */ u_int v_timer; /* LAPIC timer interrupts */ u_int v_soft; /* software interrupts */ /* * Virtual memory activity. */ u_int v_vm_faults; /* number of address memory faults */ u_int v_cow_faults; /* number of copy-on-writes */ u_int v_cow_optim; /* number of optimized copy-on-writes */ u_int v_zfod; /* pages zero filled on demand */ u_int v_ozfod; /* optimized zero fill pages */ u_int v_swapin; /* swap pager pageins */ u_int v_swapout; /* swap pager pageouts */ u_int v_swappgsin; /* swap pager pages paged in */ u_int v_swappgsout; /* swap pager pages paged out */ u_int v_vnodein; /* vnode pager pageins */ u_int v_vnodeout; /* vnode pager pageouts */ u_int v_vnodepgsin; /* vnode_pager pages paged in */ u_int v_vnodepgsout; /* vnode pager pages paged out */ u_int v_intrans; /* intransit blocking page faults */ u_int v_reactivated; /* number of pages reactivated from free list */ u_int v_pdwakeups; /* number of times daemon has awaken from sleep */ u_int v_pdpages; /* number of pages analyzed by daemon */ u_int v_dfree; /* pages freed by daemon */ u_int v_pfree; /* pages freed by exiting processes */ u_int v_tfree; /* total pages freed */ /* * Fork/vfork/rfork activity. */ u_int v_forks; /* number of fork() calls */ u_int v_vforks; /* number of vfork() calls */ u_int v_rforks; /* number of rfork() calls */ u_int v_exec; /* number of exec() calls */ u_int v_kthreads; /* number of fork() calls by kernel */ u_int v_forkpages; /* number of VM pages affected by fork() */ u_int v_vforkpages; /* number of VM pages affected by vfork() */ u_int v_rforkpages; /* number of VM pages affected by rfork() */ u_int v_kthreadpages; /* number of VM pages affected by fork() by kernel */ u_int v_intrans_coll; /* intransit map collisions (total) */ u_int v_intrans_wait; /* intransit map collisions which blocked */ u_int v_forwarded_ints; /* forwarded interrupts due to MP lock */ u_int v_forwarded_hits; u_int v_forwarded_misses; u_int v_smpinvltlb; /* nasty global invltlbs */ u_int v_ppwakeups; /* wakeups on processes stalled on VM */ u_int v_lock_colls; /* # of token, lock, or spin collisions */ u_int v_wakeup_colls; /* possible spurious wakeup IPIs */ u_int v_reserved7; #define vmmeter_uint_end v_reserved7 char v_lock_name[32]; /* last-colliding token, lock, or spin name */ void *v_lock_addr; /* last-colliding lock address */ }; /* * vmstats structure, global vmstats is the rollup, pcpu vmstats keeps * track of minor (generally positive) adjustments. For moving targets, * the global vmstats structure represents the smallest likely value. * * This structure is cache sensitive, separate nominal read-only elements * from variable elements. */ struct vmstats { /* * Distribution of page usages. */ u_int v_page_size; /* page size in bytes */ u_int v_unused01; long v_page_count; /* total number of pages in system */ long v_free_severe; /* severe depletion of pages below this pt */ long v_free_reserved; /* number of pages reserved for deadlock */ /* * Free page queues, pageout daemon starts below when v_free_count * goes below v_free_min. */ long v_free_min; /* minimum free pages to maintain */ long v_free_target; /* pageout daemon loop target */ /* * While operating, the pageout daemon pipelines up to N pages per * loop, relooping as needed until all targets are achieved. * * active -> inactive * inactive -> cache (1/4 of v_inactive_target) */ long v_inactive_target; /* active -> inactive */ /* * The pageout daemon also starts when (v_free_count + v_cache_count) * goes below v_paging_start, and generally continues until it * goes above v_paging_target2. */ long v_paging_wait; /* vs (free + cache), stall user-land */ long v_paging_start; /* vs (free + cache), start paging */ long v_paging_target1; /* vs (free + cache), slow down paging */ long v_paging_target2; /* vs (free + cache), stop paging */ long v_pageout_free_min; /* min number pages reserved for kernel */ long v_interrupt_free_min; /* reserved number of pages for int code */ long v_dma_pages; /* total dma-reserved pages */ long v_unused_fixed01; long v_unused_fixed02; long v_unused_fixed03; long v_free_count; /* number of pages free */ long v_wire_count; /* number of pages wired down */ long v_active_count; /* number of pages active */ long v_inactive_count; /* number of pages inactive */ long v_cache_count; /* number of pages on buffer cache queue */ long v_dma_avail; /* free dma-reserved pages */ long v_unused_variable[9]; }; #ifdef _KERNEL /* note: vmmeter 'cnt' structure is now per-cpu */ extern struct vmstats vmstats; #endif /* systemwide totals computed every five seconds */ struct vmtotal { long t_rq; /* length of the run queue */ long t_dw; /* jobs in ``disk wait'' (neg priority) */ long t_pw; /* jobs in page wait */ long t_sl; /* jobs sleeping in core */ long t_sw; /* swapped out runnable/short block jobs */ int64_t t_vm; /* total virtual memory */ int64_t t_avm; /* active virtual memory */ long t_rm; /* total real memory in use */ long t_arm; /* active real memory */ int64_t t_vmshr; /* shared virtual memory */ int64_t t_avmshr; /* active shared virtual memory */ long t_rmshr; /* shared real memory */ long t_armshr; /* active shared real memory */ long t_free; /* free memory pages */ }; #ifdef PGINPROF /* * Optional instrumentation. */ #define NDMON 128 #define NSMON 128 #define DRES 20 #define SRES 5 #define PMONMIN 20 #define PRES 50 #define NPMON 64 #define RMONMIN 130 #define RRES 5 #define NRMON 64 /* data and stack size distribution counters */ u_int dmon[NDMON+1]; u_int smon[NSMON+1]; /* page in time distribution counters */ u_int pmon[NPMON+2]; /* reclaim time distribution counters */ u_int rmon[NRMON+2]; int pmonmin; int pres; int rmonmin; int rres; u_int rectime; /* accumulator for reclaim times */ u_int pgintime; /* accumulator for page in times */ #endif /* PGINPROF */ #ifdef _KERNEL void vmstats_rollup(void); void vmstats_rollup_cpu(struct globaldata *gd); #endif #endif
