uvm_stat.c revision 1.28
1 /* $NetBSD: uvm_stat.c,v 1.28 2005/06/27 02:19:48 thorpej 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 1.28 2005/06/27 02:19:48 thorpej Exp $"); 43 44 #include "opt_uvmhist.h" 45 #include "opt_ddb.h" 46 47 #include <sys/param.h> 48 #include <sys/systm.h> 49 50 #include <uvm/uvm.h> 51 #include <uvm/uvm_ddb.h> 52 53 /* 54 * globals 55 */ 56 57 #ifdef UVMHIST 58 struct uvm_history_head uvm_histories; 59 #endif 60 61 #ifdef UVMHIST_PRINT 62 int uvmhist_print_enabled = 1; 63 #endif 64 65 #ifdef DDB 66 67 /* 68 * prototypes 69 */ 70 71 #ifdef UVMHIST 72 void uvmhist_dump(struct uvm_history *); 73 void uvm_hist(u_int32_t); 74 static void uvmhist_dump_histories(struct uvm_history *[]); 75 #endif 76 void uvmcnt_dump(void); 77 78 79 #ifdef UVMHIST 80 /* call this from ddb */ 81 void 82 uvmhist_dump(struct uvm_history *l) 83 { 84 int lcv, s; 85 86 s = splhigh(); 87 lcv = l->f; 88 do { 89 if (l->e[lcv].fmt) 90 uvmhist_print(&l->e[lcv]); 91 lcv = (lcv + 1) % l->n; 92 } while (lcv != l->f); 93 splx(s); 94 } 95 96 /* 97 * print a merged list of uvm_history structures 98 */ 99 static void 100 uvmhist_dump_histories(struct uvm_history *hists[]) 101 { 102 struct timeval tv; 103 int cur[MAXHISTS]; 104 int s, lcv, hi; 105 106 /* so we don't get corrupted lists! */ 107 s = splhigh(); 108 109 /* find the first of each list */ 110 for (lcv = 0; hists[lcv]; lcv++) 111 cur[lcv] = hists[lcv]->f; 112 113 /* 114 * here we loop "forever", finding the next earliest 115 * history entry and printing it. cur[X] is the current 116 * entry to test for the history in hists[X]. if it is 117 * -1, then this history is finished. 118 */ 119 for (;;) { 120 hi = -1; 121 tv.tv_sec = tv.tv_usec = 0; 122 123 /* loop over each history */ 124 for (lcv = 0; hists[lcv]; lcv++) { 125 restart: 126 if (cur[lcv] == -1) 127 continue; 128 129 /* 130 * if the format is empty, go to the next entry 131 * and retry. 132 */ 133 if (hists[lcv]->e[cur[lcv]].fmt == NULL) { 134 cur[lcv] = (cur[lcv] + 1) % (hists[lcv]->n); 135 if (cur[lcv] == hists[lcv]->f) 136 cur[lcv] = -1; 137 goto restart; 138 } 139 140 /* 141 * if the time hasn't been set yet, or this entry is 142 * earlier than the current tv, set the time and history 143 * index. 144 */ 145 if (tv.tv_sec == 0 || 146 timercmp(&hists[lcv]->e[cur[lcv]].tv, &tv, <)) { 147 tv = hists[lcv]->e[cur[lcv]].tv; 148 hi = lcv; 149 } 150 } 151 152 /* if we didn't find any entries, we must be done */ 153 if (hi == -1) 154 break; 155 156 /* print and move to the next entry */ 157 uvmhist_print(&hists[hi]->e[cur[hi]]); 158 cur[hi] = (cur[hi] + 1) % (hists[hi]->n); 159 if (cur[hi] == hists[hi]->f) 160 cur[hi] = -1; 161 } 162 splx(s); 163 } 164 165 /* 166 * call this from ddb. `bitmask' is from <uvm/uvm_stat.h>. it 167 * merges the named histories. 168 */ 169 void 170 uvm_hist(u_int32_t bitmask) /* XXX only support 32 hists */ 171 { 172 struct uvm_history *hists[MAXHISTS + 1]; 173 int i = 0; 174 175 if ((bitmask & UVMHIST_MAPHIST) || bitmask == 0) 176 hists[i++] = &maphist; 177 178 if ((bitmask & UVMHIST_PDHIST) || bitmask == 0) 179 hists[i++] = &pdhist; 180 181 if ((bitmask & UVMHIST_UBCHIST) || bitmask == 0) 182 hists[i++] = &ubchist; 183 184 if ((bitmask & UVMHIST_LOANHIST) || bitmask == 0) 185 hists[i++] = &loanhist; 186 187 hists[i] = NULL; 188 189 uvmhist_dump_histories(hists); 190 } 191 #endif /* UVMHIST */ 192 193 /* 194 * uvmexp_print: ddb hook to print interesting uvm counters 195 */ 196 void 197 uvmexp_print(void (*pr)(const char *, ...)) 198 { 199 200 (*pr)("Current UVM status:\n"); 201 (*pr)(" pagesize=%d (0x%x), pagemask=0x%x, pageshift=%d\n", 202 uvmexp.pagesize, uvmexp.pagesize, uvmexp.pagemask, 203 uvmexp.pageshift); 204 (*pr)(" %d VM pages: %d active, %d inactive, %d wired, %d free\n", 205 uvmexp.npages, uvmexp.active, uvmexp.inactive, uvmexp.wired, 206 uvmexp.free); 207 (*pr)(" min %d%% (%d) anon, %d%% (%d) file, %d%% (%d) exec\n", 208 uvmexp.anonminpct, uvmexp.anonmin, uvmexp.fileminpct, 209 uvmexp.filemin, uvmexp.execminpct, uvmexp.execmin); 210 (*pr)(" max %d%% (%d) anon, %d%% (%d) file, %d%% (%d) exec\n", 211 uvmexp.anonmaxpct, uvmexp.anonmax, uvmexp.filemaxpct, 212 uvmexp.filemax, uvmexp.execmaxpct, uvmexp.execmax); 213 (*pr)(" pages %d anon, %d file, %d exec\n", 214 uvmexp.anonpages, uvmexp.filepages, uvmexp.execpages); 215 (*pr)(" freemin=%d, free-target=%d, inactive-target=%d, " 216 "wired-max=%d\n", uvmexp.freemin, uvmexp.freetarg, uvmexp.inactarg, 217 uvmexp.wiredmax); 218 (*pr)(" faults=%d, traps=%d, intrs=%d, ctxswitch=%d\n", 219 uvmexp.faults, uvmexp.traps, uvmexp.intrs, uvmexp.swtch); 220 (*pr)(" softint=%d, syscalls=%d, swapins=%d, swapouts=%d\n", 221 uvmexp.softs, uvmexp.syscalls, uvmexp.swapins, uvmexp.swapouts); 222 223 (*pr)(" fault counts:\n"); 224 (*pr)(" noram=%d, noanon=%d, pgwait=%d, pgrele=%d\n", 225 uvmexp.fltnoram, uvmexp.fltnoanon, uvmexp.fltpgwait, 226 uvmexp.fltpgrele); 227 (*pr)(" ok relocks(total)=%d(%d), anget(retrys)=%d(%d), " 228 "amapcopy=%d\n", uvmexp.fltrelckok, uvmexp.fltrelck, 229 uvmexp.fltanget, uvmexp.fltanretry, uvmexp.fltamcopy); 230 (*pr)(" neighbor anon/obj pg=%d/%d, gets(lock/unlock)=%d/%d\n", 231 uvmexp.fltnamap, uvmexp.fltnomap, uvmexp.fltlget, uvmexp.fltget); 232 (*pr)(" cases: anon=%d, anoncow=%d, obj=%d, prcopy=%d, przero=%d\n", 233 uvmexp.flt_anon, uvmexp.flt_acow, uvmexp.flt_obj, uvmexp.flt_prcopy, 234 uvmexp.flt_przero); 235 236 (*pr)(" daemon and swap counts:\n"); 237 (*pr)(" woke=%d, revs=%d, scans=%d, obscans=%d, anscans=%d\n", 238 uvmexp.pdwoke, uvmexp.pdrevs, uvmexp.pdscans, uvmexp.pdobscan, 239 uvmexp.pdanscan); 240 (*pr)(" busy=%d, freed=%d, reactivate=%d, deactivate=%d\n", 241 uvmexp.pdbusy, uvmexp.pdfreed, uvmexp.pdreact, uvmexp.pddeact); 242 (*pr)(" pageouts=%d, pending=%d, nswget=%d\n", uvmexp.pdpageouts, 243 uvmexp.pdpending, uvmexp.nswget); 244 (*pr)(" nswapdev=%d, swpgavail=%d\n", 245 uvmexp.nswapdev, uvmexp.swpgavail); 246 (*pr)(" swpages=%d, swpginuse=%d, swpgonly=%d, paging=%d\n", 247 uvmexp.swpages, uvmexp.swpginuse, uvmexp.swpgonly, uvmexp.paging); 248 } 249 #endif 250
Indexes created Fri Sep 26 08:10:20 GMT 2025