Annotation of sys/uvm/uvm_stat.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: uvm_stat.c,v 1.19 2007/04/19 16:20:07 art Exp $ */
2: /* $NetBSD: uvm_stat.c,v 1.18 2001/03/09 01:02:13 chs Exp $ */
3:
4: /*
5: *
6: * Copyright (c) 1997 Charles D. Cranor and Washington University.
7: * All rights reserved.
8: *
9: * Redistribution and use in source and binary forms, with or without
10: * modification, are permitted provided that the following conditions
11: * are met:
12: * 1. Redistributions of source code must retain the above copyright
13: * notice, this list of conditions and the following disclaimer.
14: * 2. Redistributions in binary form must reproduce the above copyright
15: * notice, this list of conditions and the following disclaimer in the
16: * documentation and/or other materials provided with the distribution.
17: * 3. All advertising materials mentioning features or use of this software
18: * must display the following acknowledgement:
19: * This product includes software developed by Charles D. Cranor and
20: * Washington University.
21: * 4. The name of the author may not be used to endorse or promote products
22: * derived from this software without specific prior written permission.
23: *
24: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
25: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
26: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
27: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
28: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
29: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
30: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
31: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
32: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
33: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34: *
35: * from: Id: uvm_stat.c,v 1.1.2.3 1997/12/19 15:01:00 mrg Exp
36: */
37:
38: /*
39: * uvm_stat.c
40: */
41:
42: #include <sys/param.h>
43: #include <sys/systm.h>
44:
45: #include <uvm/uvm.h>
46: #include <uvm/uvm_ddb.h>
47:
48: /*
49: * globals
50: */
51:
52: struct uvm_cnt *uvm_cnt_head = NULL;
53:
54: #ifdef UVMHIST
55: struct uvm_history_head uvm_histories;
56: #endif
57:
58: #ifdef UVMHIST_PRINT
59: int uvmhist_print_enabled = 1;
60: #endif
61:
62: #ifdef DDB
63:
64: /*
65: * prototypes
66: */
67:
68: #ifdef UVMHIST
69: void uvmhist_dump(struct uvm_history *);
70: void uvm_hist(u_int32_t);
71: static void uvmhist_dump_histories(struct uvm_history *[]);
72: #endif
73: void uvmcnt_dump(void);
74:
75:
76: #ifdef UVMHIST
77: /* call this from ddb */
78: void
79: uvmhist_dump(l)
80: struct uvm_history *l;
81: {
82: int lcv, s;
83:
84: s = splhigh();
85: lcv = l->f;
86: do {
87: if (l->e[lcv].fmt)
88: uvmhist_print(&l->e[lcv]);
89: lcv = (lcv + 1) % l->n;
90: } while (lcv != l->f);
91: splx(s);
92: }
93:
94: /*
95: * print a merged list of uvm_history structures
96: */
97: static void
98: uvmhist_dump_histories(hists)
99: struct uvm_history *hists[];
100: {
101: struct timeval tv;
102: int cur[MAXHISTS];
103: int s, lcv, hi;
104:
105: /* so we don't get corrupted lists! */
106: s = splhigh();
107:
108: /* find the first of each list */
109: for (lcv = 0; hists[lcv]; lcv++)
110: cur[lcv] = hists[lcv]->f;
111:
112: /*
113: * here we loop "forever", finding the next earliest
114: * history entry and printing it. cur[X] is the current
115: * entry to test for the history in hists[X]. if it is
116: * -1, then this history is finished.
117: */
118: for (;;) {
119: hi = -1;
120: tv.tv_sec = tv.tv_usec = 0;
121:
122: /* loop over each history */
123: for (lcv = 0; hists[lcv]; lcv++) {
124: restart:
125: if (cur[lcv] == -1)
126: continue;
127:
128: /*
129: * if the format is empty, go to the next entry
130: * and retry.
131: */
132: if (hists[lcv]->e[cur[lcv]].fmt == NULL) {
133: cur[lcv] = (cur[lcv] + 1) % (hists[lcv]->n);
134: if (cur[lcv] == hists[lcv]->f)
135: cur[lcv] = -1;
136: goto restart;
137: }
138:
139: /*
140: * if the time hasn't been set yet, or this entry is
141: * earlier than the current tv, set the time and history
142: * index.
143: */
144: if (tv.tv_sec == 0 ||
145: timercmp(&hists[lcv]->e[cur[lcv]].tv, &tv, <)) {
146: tv = hists[lcv]->e[cur[lcv]].tv;
147: hi = lcv;
148: }
149: }
150:
151: /* if we didn't find any entries, we must be done */
152: if (hi == -1)
153: break;
154:
155: /* print and move to the next entry */
156: uvmhist_print(&hists[hi]->e[cur[hi]]);
157: cur[hi] = (cur[hi] + 1) % (hists[hi]->n);
158: if (cur[hi] == hists[hi]->f)
159: cur[hi] = -1;
160: }
161:
162: /* done! */
163: splx(s);
164: }
165:
166: /*
167: * call this from ddb. `bitmask' is from <uvm/uvm_stat.h>. it
168: * merges the named histories.
169: */
170: void
171: uvm_hist(bitmask)
172: 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: hists[i] = NULL;
184:
185: uvmhist_dump_histories(hists);
186: }
187: #endif /* UVMHIST */
188:
189: void
190: uvmcnt_dump()
191: {
192: struct uvm_cnt *uvc = uvm_cnt_head;
193:
194: while (uvc) {
195: if ((uvc->t & UVMCNT_MASK) != UVMCNT_CNT)
196: continue;
197: printf("%s = %d\n", uvc->name, uvc->c);
198: uvc = uvc->next;
199: }
200: }
201:
202: /*
203: * uvmexp_print: ddb hook to print interesting uvm counters
204: */
205: void
206: uvmexp_print(int (*pr)(const char *, ...))
207: {
208:
209: (*pr)("Current UVM status:\n");
210: (*pr)(" pagesize=%d (0x%x), pagemask=0x%x, pageshift=%d\n",
211: uvmexp.pagesize, uvmexp.pagesize, uvmexp.pagemask,
212: uvmexp.pageshift);
213: (*pr)(" %d VM pages: %d active, %d inactive, %d wired, %d free\n",
214: uvmexp.npages, uvmexp.active, uvmexp.inactive, uvmexp.wired,
215: uvmexp.free);
216: (*pr)(" min %d%% (%d) anon, %d%% (%d) vnode, %d%% (%d) vtext\n",
217: uvmexp.anonminpct, uvmexp.anonmin, uvmexp.vnodeminpct,
218: uvmexp.vnodemin, uvmexp.vtextminpct, uvmexp.vtextmin);
219: (*pr)(" pages %d anon, %d vnode, %d vtext\n",
220: uvmexp.anonpages, uvmexp.vnodepages, uvmexp.vtextpages);
221: (*pr)(" freemin=%d, free-target=%d, inactive-target=%d, "
222: "wired-max=%d\n", uvmexp.freemin, uvmexp.freetarg, uvmexp.inactarg,
223: uvmexp.wiredmax);
224: (*pr)(" faults=%d, traps=%d, intrs=%d, ctxswitch=%d fpuswitch=%d\n",
225: uvmexp.faults, uvmexp.traps, uvmexp.intrs, uvmexp.swtch,
226: uvmexp.fpswtch);
227: (*pr)(" softint=%d, syscalls=%d, swapins=%d, swapouts=%d, "
228: "kmapent=%d\n", uvmexp.softs, uvmexp.syscalls, uvmexp.swapins,
229: uvmexp.swapouts, uvmexp.kmapent);
230:
231: (*pr)(" fault counts:\n");
232: (*pr)(" noram=%d, noanon=%d, pgwait=%d, pgrele=%d\n",
233: uvmexp.fltnoram, uvmexp.fltnoanon, uvmexp.fltpgwait,
234: uvmexp.fltpgrele);
235: (*pr)(" ok relocks(total)=%d(%d), anget(retries)=%d(%d), "
236: "amapcopy=%d\n", uvmexp.fltrelckok, uvmexp.fltrelck,
237: uvmexp.fltanget, uvmexp.fltanretry, uvmexp.fltamcopy);
238: (*pr)(" neighbor anon/obj pg=%d/%d, gets(lock/unlock)=%d/%d\n",
239: uvmexp.fltnamap, uvmexp.fltnomap, uvmexp.fltlget, uvmexp.fltget);
240: (*pr)(" cases: anon=%d, anoncow=%d, obj=%d, prcopy=%d, przero=%d\n",
241: uvmexp.flt_anon, uvmexp.flt_acow, uvmexp.flt_obj, uvmexp.flt_prcopy,
242: uvmexp.flt_przero);
243:
244: (*pr)(" daemon and swap counts:\n");
245: (*pr)(" woke=%d, revs=%d, scans=%d, obscans=%d, anscans=%d\n",
246: uvmexp.pdwoke, uvmexp.pdrevs, uvmexp.pdscans, uvmexp.pdobscan,
247: uvmexp.pdanscan);
248: (*pr)(" busy=%d, freed=%d, reactivate=%d, deactivate=%d\n",
249: uvmexp.pdbusy, uvmexp.pdfreed, uvmexp.pdreact, uvmexp.pddeact);
250: (*pr)(" pageouts=%d, pending=%d, nswget=%d\n", uvmexp.pdpageouts,
251: uvmexp.pdpending, uvmexp.nswget);
252: (*pr)(" nswapdev=%d, nanon=%d, nanonneeded=%d nfreeanon=%d\n",
253: uvmexp.nswapdev, uvmexp.nanon, uvmexp.nanonneeded,
254: uvmexp.nfreeanon);
255: (*pr)(" swpages=%d, swpginuse=%d, swpgonly=%d paging=%d\n",
256: uvmexp.swpages, uvmexp.swpginuse, uvmexp.swpgonly, uvmexp.paging);
257:
258: (*pr)(" kernel pointers:\n");
259: (*pr)(" objs(kern)=%p\n", uvm.kernel_object);
260: }
261: #endif
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