1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright (c) 2014 Gary Mills
23 * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 #include <sys/types.h>
28 #include <sys/ddi.h>
29 #include <sys/pte.h>
30 #include <sys/cpr.h>
31
32 /*
33 * Support routines for CPR statistic collection
34 */
35 struct cpr_event cpr_events_buf[CPR_E_MAX_EVENTNUM];
36
37 extern struct cpr_terminator cpr_term;
38
39 struct cpr_event *cpr_find_event(char *name, int new);
40
41 #define CPR_DEFAULT_PROMTIME 30
42 #define CE_START_MASK 0x8000000
43
44 /*
45 * Use ctp to specify another time point instead of the current time;
46 * Otherwise, ctp is NULL.
47 */
48 void
cpr_stat_event_start(char * name,cpr_time_t * ctp)49 cpr_stat_event_start(char *name, cpr_time_t *ctp)
50 {
51 struct cpr_event *cep;
52 cpr_time_t tv;
53
54 if (ctp)
55 tv = *ctp;
56 else {
57 /* need relative time even when hrestime is stoped */
58 cpr_tod_get(&tv);
59 }
60
61 if ((cep = cpr_find_event(name, 1)) == NULL) {
62 cpr_err(CE_WARN, "cpr_stat: run out of event buffers");
63 return;
64 }
65 /*
66 * disallow entering start twice without calling end first
67 */
68 if (cep->ce_ntests & CE_START_MASK)
69 return;
70
71 cep->ce_ntests |= CE_START_MASK;
72 cep->ce_sec.stime = cep->ce_sec.etime = tv.tv_sec;
73 cep->ce_sec.ltime = 0;
74 cep->ce_msec.stime = cep->ce_msec.etime = tv.tv_nsec / 100000000;
75 cep->ce_msec.ltime = 0;
76 }
77
78 void
cpr_stat_event_end(char * name,cpr_time_t * ctp)79 cpr_stat_event_end(char *name, cpr_time_t *ctp)
80 {
81 struct cpr_stat *cp = STAT;
82 struct cpr_event *cep;
83 cpr_time_t tv;
84
85 if (ctp)
86 tv = *ctp;
87 else
88 cpr_tod_get(&tv);
89
90 if ((cep = cpr_find_event(name, 0)) == NULL) {
91 #ifdef CPR_STAT
92 prom_printf("cpr_stat: event \"%s\" is not monitored\n", name);
93 #endif /* CPR_STAT */
94 return;
95 }
96
97 /*
98 * diallow entering end twice without calling end first
99 */
100 if (!(cep->ce_ntests & CE_START_MASK))
101 return;
102
103 cep->ce_ntests &= ~CE_START_MASK;
104 cep->ce_ntests++;
105
106 /*
107 * calculate seconds
108 */
109 cep->ce_sec.etime = tv.tv_sec;
110 cep->ce_sec.ltime = cep->ce_sec.etime - cep->ce_sec.stime;
111 cep->ce_sec.mtime = ((cep->ce_sec.mtime * (cep->ce_ntests - 1)) +
112 cep->ce_sec.ltime) / cep->ce_ntests;
113
114 /*
115 * calculate 100*milliseconds
116 */
117 if (cep->ce_sec.ltime == 0) {
118 cep->ce_msec.etime = tv.tv_nsec / 100000000;
119 cep->ce_msec.ltime =
120 (cep->ce_msec.etime <= cep->ce_msec.stime) ? 0 :
121 (cep->ce_msec.etime - cep->ce_msec.stime);
122 cep->ce_msec.mtime =
123 ((cep->ce_msec.mtime * (cep->ce_ntests - 1)) +
124 cep->ce_msec.ltime) / cep->ce_ntests;
125 }
126 cp->cs_ntests = cep->ce_ntests & ~CE_START_MASK;
127 }
128
129 void
cpr_stat_cleanup()130 cpr_stat_cleanup()
131 {
132 struct cpr_stat *cp = STAT;
133 struct cpr_event *cep;
134
135 for (cep = cp->cs_event_head; cep; cep = cep->ce_next) {
136 if ((cep->ce_ntests & CE_START_MASK) &&
137 strcmp(cep->ce_name, "POST CPR DELAY") != NULL) {
138 cpr_stat_event_end(cep->ce_name, 0);
139 cep->ce_ntests &= ~CE_START_MASK;
140 }
141 }
142 }
143
144 void
cpr_stat_init()145 cpr_stat_init()
146 {
147 STAT->cs_real_statefsz = 0;
148 STAT->cs_dumped_statefsz = 0;
149 }
150
151 void
cpr_stat_record_events()152 cpr_stat_record_events()
153 {
154 if (cpr_term.real_statef_size) {
155 int cur_comprate;
156
157 STAT->cs_real_statefsz = cpr_term.real_statef_size;
158 cur_comprate = ((longlong_t)((longlong_t)
159 STAT->cs_nocomp_statefsz*100)/
160 STAT->cs_real_statefsz);
161 if (STAT->cs_min_comprate == 0 ||
162 (STAT->cs_min_comprate > cur_comprate))
163 STAT->cs_min_comprate = cur_comprate;
164 }
165 }
166
167 void
cpr_stat_event_print()168 cpr_stat_event_print()
169 {
170 struct cpr_stat *cp = STAT;
171 struct cpr_event *cep;
172 char *fmt, *tabs;
173 int len;
174
175 printf("\n");
176 printf("---------------\t\tCPR PERFORMANCE SUMMARY\t\t-------------\n");
177 printf("Events\t\t\tRepeat[times]\tMeantime[sec]\tLastEvnt[sec]\n");
178
179 for (cep = cp->cs_event_head; cep; cep = cep->ce_next) {
180 len = strlen(cep->ce_name);
181 if (len < 8)
182 tabs = "\t\t\t";
183 else if (len < 16)
184 tabs = "\t\t";
185 else
186 tabs = "\t";
187 if (strcmp(cep->ce_name, "Suspend Total") == NULL ||
188 strcmp(cep->ce_name, "Resume Total") == NULL ||
189 strcmp(cep->ce_name, "POST CPR DELAY") == NULL ||
190 strcmp(cep->ce_name, "WHOLE CYCLE") == NULL)
191 fmt = "%s%s%d\t\t%3d.%1d\t\t%3d.%1d\n";
192 else
193 fmt = "%s%s%d\t\t %3d.%1d\t\t %3d.%1d\n";
194 printf(fmt, cep->ce_name, tabs, (int)cep->ce_ntests,
195 (int)cep->ce_sec.mtime, (int)(cep->ce_msec.mtime / 10),
196 (int)cep->ce_sec.ltime, (int)(cep->ce_msec.ltime / 10));
197 }
198 delay(drv_usectohz(10000)); /* otherwise the next line goes to prom */
199 /*
200 * print the rest of the stat data
201 */
202 printf("\nMISCELLANEOUS STATISTICS INFORMATION (units in KBytes)\n\n");
203 printf("\tUser Pages w/o Swapspace:\t%8lu (%lu pages)\n",
204 cp->cs_nosw_pages*PAGESIZE/1000, cp->cs_nosw_pages);
205 printf("\tTotal Upages Saved to Statefile:%8d (%d pages)\n",
206 cp->cs_upage2statef*PAGESIZE/1000, cp->cs_upage2statef);
207 if (cp->cs_mclustsz)
208 printf("\tAverage Cluster Size:\t\t%8d (%d.%1d%1d pages)\n\n",
209 cp->cs_mclustsz/1000, cp->cs_mclustsz/PAGESIZE,
210 ((cp->cs_mclustsz%PAGESIZE)*10/PAGESIZE),
211 ((cp->cs_mclustsz%PAGESIZE)*100/PAGESIZE)%10);
212 printf("\tKernel Memory Size:\t\t%8lu\n", cp->cs_nocomp_statefsz/1000);
213 printf("\tEstimated Statefile Size:\t%8lu\n", cp->cs_est_statefsz/1000);
214 printf("\tActual Statefile Size:\t\t%8lu\n", cp->cs_real_statefsz/1000);
215 if (cp->cs_real_statefsz) {
216 int min = cp->cs_min_comprate;
217 int new = ((longlong_t)((longlong_t)
218 cp->cs_nocomp_statefsz*100)/cp->cs_real_statefsz);
219
220 printf("\tCompression Ratio:\t\t%5d.%1d%1d (worst %d.%1d%1d)\n",
221 new/100, (new%100)/10, new%10,
222 min/100, (min%100)/10, min%10);
223 }
224 }
225
226 struct cpr_event *
cpr_find_event(char * name,int new)227 cpr_find_event(char *name, int new)
228 {
229 struct cpr_stat *cp = STAT;
230 struct cpr_event *cep;
231 int i;
232
233 for (cep = cp->cs_event_head; cep; cep = cep->ce_next) {
234 if (strcmp(name, cep->ce_name) == NULL)
235 return (cep);
236 }
237
238 /* if not begin not end either */
239 if (new == NULL)
240 return (NULL);
241
242 for (i = 0; i < CPR_E_MAX_EVENTNUM; i++) {
243 for (cep = cp->cs_event_head; cep; cep = cep->ce_next) {
244 if (&cpr_events_buf[i] == cep)
245 break;
246 }
247 if (!cep) {
248 struct cpr_event *new_cep;
249
250 new_cep = &cpr_events_buf[i];
251 (void) strcpy(new_cep->ce_name, name);
252
253 if (!cp->cs_event_head) {
254 /* The 1st one */
255 cp->cs_event_head = new_cep;
256 } else {
257 /* insert to tail */
258 new_cep->ce_next = cp->cs_event_tail->ce_next;
259 cp->cs_event_tail->ce_next = new_cep;
260 }
261 cp->cs_event_tail = new_cep;
262 return (new_cep);
263 }
264 }
265 return (NULL);
266 }
267
268 static time_t min_promtime;
269
270 void
cpr_convert_promtime(cpr_time_t * pop)271 cpr_convert_promtime(cpr_time_t *pop)
272 {
273 time_t pwroff_time, cb_time;
274 cpr_time_t *startp, *shdnp, *endp;
275
276 startp = &cpr_term.tm_cprboot_start;
277 shdnp = &cpr_term.tm_shutdown;
278 endp = &cpr_term.tm_cprboot_end;
279
280 cb_time = endp->tv_sec - startp->tv_sec;
281
282 cpr_tod_get(endp);
283 startp->tv_sec = endp->tv_sec - cb_time;
284
285 if (min_promtime == 0 ||
286 min_promtime > (endp->tv_sec - shdnp->tv_sec - cb_time))
287 min_promtime = endp->tv_sec - shdnp->tv_sec - cb_time;
288
289 if (min_promtime > CPR_DEFAULT_PROMTIME)
290 min_promtime = CPR_DEFAULT_PROMTIME;
291
292 pwroff_time = startp->tv_sec - shdnp->tv_sec - min_promtime;
293
294 wholecycle_tv.tv_sec += pwroff_time; /* offset the poweroff time */
295
296 pop->tv_sec = startp->tv_sec - min_promtime;
297 }
298