1 /* $NetBSD: uvm_stat.c,v 1.46 2020/06/14 21:41:42 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 1.46 2020/06/14 21:41:42 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
uvmexp_print(void (* pr)(const char *,...))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\n",
88 uvmexp.reserve_pagedaemon, uvmexp.reserve_kernel);
89 (*pr)(" bootpages=%d, poolpages=%d\n",
90 uvmexp.bootpages, poolpages);
91
92 (*pr)(" faults=%" PRId64 ", traps=%" PRId64 ", "
93 "intrs=%" PRId64 ", ctxswitch=%" PRId64 "\n",
94 cpu_count_get(CPU_COUNT_NFAULT),
95 cpu_count_get(CPU_COUNT_NTRAP),
96 cpu_count_get(CPU_COUNT_NINTR),
97 cpu_count_get(CPU_COUNT_NSWTCH));
98 (*pr)(" softint=%" PRId64 ", syscalls=%" PRId64 "\n",
99 cpu_count_get(CPU_COUNT_NSOFT),
100 cpu_count_get(CPU_COUNT_NSYSCALL));
101
102 (*pr)(" fault counts:\n");
103 (*pr)(" noram=%" PRId64 ", noanon=%" PRId64 ", pgwait=%" PRId64
104 ", pgrele=%" PRId64 "\n",
105 cpu_count_get(CPU_COUNT_FLTNORAM),
106 cpu_count_get(CPU_COUNT_FLTNOANON),
107 cpu_count_get(CPU_COUNT_FLTPGWAIT),
108 cpu_count_get(CPU_COUNT_FLTPGRELE));
109 (*pr)(" ok relocks(total)=%" PRId64 "(%" PRId64 "), "
110 "anget(retrys)=%" PRId64 "(%" PRId64 "), amapcopy=%" PRId64 "\n",
111 cpu_count_get(CPU_COUNT_FLTRELCKOK),
112 cpu_count_get(CPU_COUNT_FLTRELCK),
113 cpu_count_get(CPU_COUNT_FLTANGET),
114 cpu_count_get(CPU_COUNT_FLTANRETRY),
115 cpu_count_get(CPU_COUNT_FLTAMCOPY));
116 (*pr)(" neighbor anon/obj pg=%" PRId64 "/%" PRId64
117 ", gets(lock/unlock)=%" PRId64 "/%" PRId64 "\n",
118 cpu_count_get(CPU_COUNT_FLTNAMAP),
119 cpu_count_get(CPU_COUNT_FLTNOMAP),
120 cpu_count_get(CPU_COUNT_FLTLGET),
121 cpu_count_get(CPU_COUNT_FLTGET));
122 (*pr)(" cases: anon=%" PRId64 ", anoncow=%" PRId64 ", obj=%" PRId64
123 ", prcopy=%" PRId64 ", przero=%" PRId64 "\n",
124 cpu_count_get(CPU_COUNT_FLT_ANON),
125 cpu_count_get(CPU_COUNT_FLT_ACOW),
126 cpu_count_get(CPU_COUNT_FLT_OBJ),
127 cpu_count_get(CPU_COUNT_FLT_PRCOPY),
128 cpu_count_get(CPU_COUNT_FLT_PRZERO));
129
130 (*pr)(" daemon and swap counts:\n");
131 (*pr)(" woke=%d, revs=%d, scans=%d, obscans=%d, anscans=%d\n",
132 uvmexp.pdwoke, uvmexp.pdrevs, uvmexp.pdscans, uvmexp.pdobscan,
133 uvmexp.pdanscan);
134 (*pr)(" busy=%d, freed=%d, reactivate=%d, deactivate=%d\n",
135 uvmexp.pdbusy, uvmexp.pdfreed, uvmexp.pdreact, uvmexp.pddeact);
136 (*pr)(" pageouts=%d, pending=%d, nswget=%d\n", uvmexp.pdpageouts,
137 uvmexp.pdpending, uvmexp.nswget);
138 (*pr)(" nswapdev=%d, swpgavail=%d\n",
139 uvmexp.nswapdev, uvmexp.swpgavail);
140 (*pr)(" swpages=%d, swpginuse=%d, swpgonly=%d, paging=%d\n",
141 uvmexp.swpages, uvmexp.swpginuse, uvmexp.swpgonly, uvmexp.paging);
142 }
143 #endif
144
145 #if defined(READAHEAD_STATS)
146
147 #define UVM_RA_EVCNT_DEFINE(name) \
148 struct evcnt uvm_ra_##name = \
149 EVCNT_INITIALIZER(EVCNT_TYPE_MISC, NULL, "readahead", #name); \
150 EVCNT_ATTACH_STATIC(uvm_ra_##name);
151
152 UVM_RA_EVCNT_DEFINE(total);
153 UVM_RA_EVCNT_DEFINE(hit);
154 UVM_RA_EVCNT_DEFINE(miss);
155
156 #endif /* defined(READAHEAD_STATS) */
157