uvm_stat.c revision 1.45
1 /* $NetBSD: uvm_stat.c,v 1.45 2020/06/11 22:21:05 ad Exp $ */ 2 3 /* 4 * Copyright (c) 1997 Charles D. Cranor and Washington University. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 * 27 * from: Id: uvm_stat.c,v 1.1.2.3 1997/12/19 15:01:00 mrg Exp 28 */ 29 30 /* 31 * uvm_stat.c 32 */ 33 34 #include <sys/cdefs.h> 35 __KERNEL_RCSID(0, "$NetBSD: uvm_stat.c,v 1.45 2020/06/11 22:21:05 ad Exp $"); 36 37 #include "opt_readahead.h" 38 #include "opt_ddb.h" 39 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/cpu.h> 43 44 #include <uvm/uvm.h> 45 #include <uvm/uvm_ddb.h> 46 47 #ifdef DDB 48 49 #include <sys/pool.h> 50 51 /* 52 * uvmexp_print: ddb hook to print interesting uvm counters 53 */ 54 void 55 uvmexp_print(void (*pr)(const char *, ...) 56 __attribute__((__format__(__printf__,1,2)))) 57 { 58 int64_t anonpg, execpg, filepg; 59 int active, inactive; 60 int poolpages, freepg; 61 62 uvm_estimatepageable(&active, &inactive); 63 poolpages = pool_totalpages_locked(); 64 65 /* this will sync all counters. */ 66 freepg = uvm_availmem(false); 67 68 anonpg = cpu_count_get(CPU_COUNT_ANONCLEAN) + 69 cpu_count_get(CPU_COUNT_ANONDIRTY) + 70 cpu_count_get(CPU_COUNT_ANONUNKNOWN); 71 execpg = cpu_count_get(CPU_COUNT_EXECPAGES); 72 filepg = cpu_count_get(CPU_COUNT_FILECLEAN) + 73 cpu_count_get(CPU_COUNT_FILEDIRTY) + 74 cpu_count_get(CPU_COUNT_FILEUNKNOWN) - 75 execpg; 76 77 (*pr)("Current UVM status:\n"); 78 (*pr)(" pagesize=%d (0x%x), pagemask=0x%x, pageshift=%d, ncolors=%d\n", 79 uvmexp.pagesize, uvmexp.pagesize, uvmexp.pagemask, 80 uvmexp.pageshift, uvmexp.ncolors); 81 (*pr)(" %d VM pages: %d active, %d inactive, %d wired, %d free\n", 82 uvmexp.npages, active, inactive, uvmexp.wired, freepg); 83 (*pr)(" pages %" PRId64 " anon, %" PRId64 " file, %" PRId64 " exec\n", 84 anonpg, filepg, execpg); 85 (*pr)(" freemin=%d, free-target=%d, wired-max=%d\n", 86 uvmexp.freemin, uvmexp.freetarg, uvmexp.wiredmax); 87 (*pr)(" resv-pg=%d, resv-kernel=%d, zeropages=%" PRId64 "\n", 88 uvmexp.reserve_pagedaemon, uvmexp.reserve_kernel, 89 cpu_count_get(CPU_COUNT_ZEROPAGES)); 90 (*pr)(" bootpages=%d, poolpages=%d\n", 91 uvmexp.bootpages, poolpages); 92 93 (*pr)(" faults=%" PRId64 ", traps=%" PRId64 ", " 94 "intrs=%" PRId64 ", ctxswitch=%" PRId64 "\n", 95 cpu_count_get(CPU_COUNT_NFAULT), 96 cpu_count_get(CPU_COUNT_NTRAP), 97 cpu_count_get(CPU_COUNT_NINTR), 98 cpu_count_get(CPU_COUNT_NSWTCH)); 99 (*pr)(" softint=%" PRId64 ", syscalls=%" PRId64 "\n", 100 cpu_count_get(CPU_COUNT_NSOFT), 101 cpu_count_get(CPU_COUNT_NSYSCALL)); 102 103 (*pr)(" fault counts:\n"); 104 (*pr)(" noram=%" PRId64 ", noanon=%" PRId64 ", pgwait=%" PRId64 105 ", pgrele=%" PRId64 "\n", 106 cpu_count_get(CPU_COUNT_FLTNORAM), 107 cpu_count_get(CPU_COUNT_FLTNOANON), 108 cpu_count_get(CPU_COUNT_FLTPGWAIT), 109 cpu_count_get(CPU_COUNT_FLTPGRELE)); 110 (*pr)(" ok relocks(total)=%" PRId64 "(%" PRId64 "), " 111 "anget(retrys)=%" PRId64 "(%" PRId64 "), amapcopy=%" PRId64 "\n", 112 cpu_count_get(CPU_COUNT_FLTRELCKOK), 113 cpu_count_get(CPU_COUNT_FLTRELCK), 114 cpu_count_get(CPU_COUNT_FLTANGET), 115 cpu_count_get(CPU_COUNT_FLTANRETRY), 116 cpu_count_get(CPU_COUNT_FLTAMCOPY)); 117 (*pr)(" neighbor anon/obj pg=%" PRId64 "/%" PRId64 118 ", gets(lock/unlock)=%" PRId64 "/%" PRId64 "\n", 119 cpu_count_get(CPU_COUNT_FLTNAMAP), 120 cpu_count_get(CPU_COUNT_FLTNOMAP), 121 cpu_count_get(CPU_COUNT_FLTLGET), 122 cpu_count_get(CPU_COUNT_FLTGET)); 123 (*pr)(" cases: anon=%" PRId64 ", anoncow=%" PRId64 ", obj=%" PRId64 124 ", prcopy=%" PRId64 ", przero=%" PRId64 "\n", 125 cpu_count_get(CPU_COUNT_FLT_ANON), 126 cpu_count_get(CPU_COUNT_FLT_ACOW), 127 cpu_count_get(CPU_COUNT_FLT_OBJ), 128 cpu_count_get(CPU_COUNT_FLT_PRCOPY), 129 cpu_count_get(CPU_COUNT_FLT_PRZERO)); 130 131 (*pr)(" daemon and swap counts:\n"); 132 (*pr)(" woke=%d, revs=%d, scans=%d, obscans=%d, anscans=%d\n", 133 uvmexp.pdwoke, uvmexp.pdrevs, uvmexp.pdscans, uvmexp.pdobscan, 134 uvmexp.pdanscan); 135 (*pr)(" busy=%d, freed=%d, reactivate=%d, deactivate=%d\n", 136 uvmexp.pdbusy, uvmexp.pdfreed, uvmexp.pdreact, uvmexp.pddeact); 137 (*pr)(" pageouts=%d, pending=%d, nswget=%d\n", uvmexp.pdpageouts, 138 uvmexp.pdpending, uvmexp.nswget); 139 (*pr)(" nswapdev=%d, swpgavail=%d\n", 140 uvmexp.nswapdev, uvmexp.swpgavail); 141 (*pr)(" swpages=%d, swpginuse=%d, swpgonly=%d, paging=%d\n", 142 uvmexp.swpages, uvmexp.swpginuse, uvmexp.swpgonly, uvmexp.paging); 143 } 144 #endif 145 146 #if defined(READAHEAD_STATS) 147 148 #define UVM_RA_EVCNT_DEFINE(name) \ 149 struct evcnt uvm_ra_##name = \ 150 EVCNT_INITIALIZER(EVCNT_TYPE_MISC, NULL, "readahead", #name); \ 151 EVCNT_ATTACH_STATIC(uvm_ra_##name); 152 153 UVM_RA_EVCNT_DEFINE(total); 154 UVM_RA_EVCNT_DEFINE(hit); 155 UVM_RA_EVCNT_DEFINE(miss); 156 157 #endif /* defined(READAHEAD_STATS) */ 158
Indexes created Sun Sep 21 18:09:52 GMT 2025