uvm_stat.c revision 1.35
1 /* $NetBSD: uvm_stat.c,v 1.35 2011/01/05 21:20:44 enami Exp $ */ 2 3 /* 4 * 5 * Copyright (c) 1997 Charles D. Cranor and Washington University. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Charles D. Cranor and 19 * Washington University. 20 * 4. The name of the author may not be used to endorse or promote products 21 * derived from this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 27 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 28 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 32 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 * 34 * from: Id: uvm_stat.c,v 1.1.2.3 1997/12/19 15:01:00 mrg Exp 35 */ 36 37 /* 38 * uvm_stat.c 39 */ 40 41 #include <sys/cdefs.h> 42 __KERNEL_RCSID(0, "$NetBSD: uvm_stat.c,v 1.35 2011/01/05 21:20:44 enami Exp $"); 43 44 #include "opt_uvmhist.h" 45 #include "opt_readahead.h" 46 #include "opt_ddb.h" 47 48 #include <sys/param.h> 49 #include <sys/systm.h> 50 #include <sys/cpu.h> 51 52 #include <uvm/uvm.h> 53 #include <uvm/uvm_ddb.h> 54 55 /* 56 * globals 57 */ 58 59 #ifdef UVMHIST 60 struct uvm_history_head uvm_histories; 61 #endif 62 63 #ifdef UVMHIST_PRINT 64 int uvmhist_print_enabled = 1; 65 #endif 66 67 #ifdef DDB 68 69 /* 70 * prototypes 71 */ 72 73 #ifdef UVMHIST 74 void uvmhist_dump(struct uvm_history *); 75 void uvm_hist(u_int32_t); 76 static void uvmhist_dump_histories(struct uvm_history *[]); 77 #endif 78 void uvmcnt_dump(void); 79 80 81 #ifdef UVMHIST 82 /* call this from ddb */ 83 void 84 uvmhist_dump(struct uvm_history *l) 85 { 86 int lcv, s; 87 88 s = splhigh(); 89 lcv = l->f; 90 do { 91 if (l->e[lcv].fmt) 92 uvmhist_entry_print(&l->e[lcv]); 93 lcv = (lcv + 1) % l->n; 94 } while (lcv != l->f); 95 splx(s); 96 } 97 98 /* 99 * print a merged list of uvm_history structures 100 */ 101 static void 102 uvmhist_dump_histories(struct uvm_history *hists[]) 103 { 104 struct timeval tv; 105 int cur[MAXHISTS]; 106 int s, lcv, hi; 107 108 /* so we don't get corrupted lists! */ 109 s = splhigh(); 110 111 /* find the first of each list */ 112 for (lcv = 0; hists[lcv]; lcv++) 113 cur[lcv] = hists[lcv]->f; 114 115 /* 116 * here we loop "forever", finding the next earliest 117 * history entry and printing it. cur[X] is the current 118 * entry to test for the history in hists[X]. if it is 119 * -1, then this history is finished. 120 */ 121 for (;;) { 122 hi = -1; 123 tv.tv_sec = tv.tv_usec = 0; 124 125 /* loop over each history */ 126 for (lcv = 0; hists[lcv]; lcv++) { 127 restart: 128 if (cur[lcv] == -1) 129 continue; 130 131 /* 132 * if the format is empty, go to the next entry 133 * and retry. 134 */ 135 if (hists[lcv]->e[cur[lcv]].fmt == NULL) { 136 cur[lcv] = (cur[lcv] + 1) % (hists[lcv]->n); 137 if (cur[lcv] == hists[lcv]->f) 138 cur[lcv] = -1; 139 goto restart; 140 } 141 142 /* 143 * if the time hasn't been set yet, or this entry is 144 * earlier than the current tv, set the time and history 145 * index. 146 */ 147 if (tv.tv_sec == 0 || 148 timercmp(&hists[lcv]->e[cur[lcv]].tv, &tv, <)) { 149 tv = hists[lcv]->e[cur[lcv]].tv; 150 hi = lcv; 151 } 152 } 153 154 /* if we didn't find any entries, we must be done */ 155 if (hi == -1) 156 break; 157 158 /* print and move to the next entry */ 159 uvmhist_entry_print(&hists[hi]->e[cur[hi]]); 160 cur[hi] = (cur[hi] + 1) % (hists[hi]->n); 161 if (cur[hi] == hists[hi]->f) 162 cur[hi] = -1; 163 } 164 splx(s); 165 } 166 167 /* 168 * call this from ddb. `bitmask' is from <uvm/uvm_stat.h>. it 169 * merges the named histories. 170 */ 171 void 172 uvm_hist(u_int32_t bitmask) /* XXX only support 32 hists */ 173 { 174 struct uvm_history *hists[MAXHISTS + 1]; 175 int i = 0; 176 177 if ((bitmask & UVMHIST_MAPHIST) || bitmask == 0) 178 hists[i++] = &maphist; 179 180 if ((bitmask & UVMHIST_PDHIST) || bitmask == 0) 181 hists[i++] = &pdhist; 182 183 if ((bitmask & UVMHIST_UBCHIST) || bitmask == 0) 184 hists[i++] = &ubchist; 185 186 if ((bitmask & UVMHIST_LOANHIST) || bitmask == 0) 187 hists[i++] = &loanhist; 188 189 hists[i] = NULL; 190 191 uvmhist_dump_histories(hists); 192 } 193 194 /* 195 * uvmhist_print: ddb hook to print uvm history 196 */ 197 void 198 uvmhist_print(void (*pr)(const char *, ...)) 199 { 200 uvmhist_dump(LIST_FIRST(&uvm_histories)); 201 } 202 203 #endif /* UVMHIST */ 204 205 /* 206 * uvmexp_print: ddb hook to print interesting uvm counters 207 */ 208 void 209 uvmexp_print(void (*pr)(const char *, ...) 210 __attribute__((__format__(__printf__,1,2)))) 211 { 212 int active, inactive; 213 CPU_INFO_ITERATOR cii; 214 struct cpu_info *ci; 215 216 uvm_estimatepageable(&active, &inactive); 217 218 (*pr)("Current UVM status:\n"); 219 (*pr)(" pagesize=%d (0x%x), pagemask=0x%x, pageshift=%d\n, ncolors=%d", 220 uvmexp.pagesize, uvmexp.pagesize, uvmexp.pagemask, 221 uvmexp.pageshift, uvmexp.ncolors); 222 (*pr)(" %d VM pages: %d active, %d inactive, %d wired, %d free\n", 223 uvmexp.npages, active, inactive, uvmexp.wired, 224 uvmexp.free); 225 (*pr)(" pages %d anon, %d file, %d exec\n", 226 uvmexp.anonpages, uvmexp.filepages, uvmexp.execpages); 227 (*pr)(" freemin=%d, free-target=%d, wired-max=%d\n", 228 uvmexp.freemin, uvmexp.freetarg, uvmexp.wiredmax); 229 230 for (CPU_INFO_FOREACH(cii, ci)) { 231 (*pr)(" cpu%u:\n", cpu_index(ci)); 232 (*pr)(" faults=%" PRIu64 ", traps=%" PRIu64 ", " 233 "intrs=%" PRIu64 ", ctxswitch=%" PRIu64 "\n", 234 ci->ci_data.cpu_nfault, ci->ci_data.cpu_ntrap, 235 ci->ci_data.cpu_nintr, ci->ci_data.cpu_nswtch); 236 (*pr)(" softint=%" PRIu64 ", syscalls=%" PRIu64 "\n", 237 ci->ci_data.cpu_nsoft, ci->ci_data.cpu_nsyscall); 238 } 239 240 (*pr)(" fault counts:\n"); 241 (*pr)(" noram=%d, noanon=%d, pgwait=%d, pgrele=%d\n", 242 uvmexp.fltnoram, uvmexp.fltnoanon, uvmexp.fltpgwait, 243 uvmexp.fltpgrele); 244 (*pr)(" ok relocks(total)=%d(%d), anget(retrys)=%d(%d), " 245 "amapcopy=%d\n", uvmexp.fltrelckok, uvmexp.fltrelck, 246 uvmexp.fltanget, uvmexp.fltanretry, uvmexp.fltamcopy); 247 (*pr)(" neighbor anon/obj pg=%d/%d, gets(lock/unlock)=%d/%d\n", 248 uvmexp.fltnamap, uvmexp.fltnomap, uvmexp.fltlget, uvmexp.fltget); 249 (*pr)(" cases: anon=%d, anoncow=%d, obj=%d, prcopy=%d, przero=%d\n", 250 uvmexp.flt_anon, uvmexp.flt_acow, uvmexp.flt_obj, uvmexp.flt_prcopy, 251 uvmexp.flt_przero); 252 253 (*pr)(" daemon and swap counts:\n"); 254 (*pr)(" woke=%d, revs=%d, scans=%d, obscans=%d, anscans=%d\n", 255 uvmexp.pdwoke, uvmexp.pdrevs, uvmexp.pdscans, uvmexp.pdobscan, 256 uvmexp.pdanscan); 257 (*pr)(" busy=%d, freed=%d, reactivate=%d, deactivate=%d\n", 258 uvmexp.pdbusy, uvmexp.pdfreed, uvmexp.pdreact, uvmexp.pddeact); 259 (*pr)(" pageouts=%d, pending=%d, nswget=%d\n", uvmexp.pdpageouts, 260 uvmexp.pdpending, uvmexp.nswget); 261 (*pr)(" nswapdev=%d, swpgavail=%d\n", 262 uvmexp.nswapdev, uvmexp.swpgavail); 263 (*pr)(" swpages=%d, swpginuse=%d, swpgonly=%d, paging=%d\n", 264 uvmexp.swpages, uvmexp.swpginuse, uvmexp.swpgonly, uvmexp.paging); 265 } 266 #endif 267 268 #if defined(READAHEAD_STATS) 269 270 #define UVM_RA_EVCNT_DEFINE(name) \ 271 struct evcnt uvm_ra_##name = \ 272 EVCNT_INITIALIZER(EVCNT_TYPE_MISC, NULL, "readahead", #name); \ 273 EVCNT_ATTACH_STATIC(uvm_ra_##name); 274 275 UVM_RA_EVCNT_DEFINE(total); 276 UVM_RA_EVCNT_DEFINE(hit); 277 UVM_RA_EVCNT_DEFINE(miss); 278 279 #endif /* defined(READAHEAD_STATS) */ 280
Indexes created Mon Sep 22 21:09:42 GMT 2025