1 /*
2 * Copyright (c) 2004, 2005, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 // CMSGCAdaptivePolicyCounters is a holder class for performance counters
26 // that track the data and decisions for the ergonomics policy for the
27 // concurrent mark sweep collector
28
29 class CMSGCAdaptivePolicyCounters : public GCAdaptivePolicyCounters {
30 friend class VMStructs;
31
32 private:
33
34 // Capacity of tenured generation recorded at the end of
35 // any collection.
36 PerfVariable* _cms_capacity_counter; // Make this common with PS _old_capacity
37
38 // Average stop-the-world pause time for both initial and
39 // remark pauses sampled at the end of the checkpointRootsFinalWork.
40 PerfVariable* _avg_cms_STW_time_counter;
41 // Average stop-the-world (STW) GC cost for the STW pause time
42 // _avg_cms_STW_time_counter.
43 PerfVariable* _avg_cms_STW_gc_cost_counter;
44
45 #ifdef NOT_PRODUCT
46 // These are useful to see how the most recent values of these
47 // counters compare to their respective averages but
48 // do not control behavior.
49 PerfVariable* _initial_pause_counter;
50 PerfVariable* _remark_pause_counter;
51 #endif
52
53 // Average of the initial marking pause for a concurrent collection.
54 PerfVariable* _avg_initial_pause_counter;
55 // Average of the remark pause for a concurrent collection.
56 PerfVariable* _avg_remark_pause_counter;
57
58 // Average for the sum of all the concurrent times per collection.
59 PerfVariable* _avg_concurrent_time_counter;
60 // Average for the time between the most recent end of a
61 // concurrent collection and the beginning of the next
62 // concurrent collection.
63 PerfVariable* _avg_concurrent_interval_counter;
64 // Average of the concurrent GC costs based on _avg_concurrent_time_counter
65 // and _avg_concurrent_interval_counter.
66 PerfVariable* _avg_concurrent_gc_cost_counter;
67
68 // Average of the free space in the tenured generation at the
69 // end of the sweep of the tenured generation.
70 PerfVariable* _avg_cms_free_counter;
71 // Average of the free space in the tenured generation at the
72 // start of the sweep of the tenured generation.
73 PerfVariable* _avg_cms_free_at_sweep_counter;
74 // Average of the free space in the tenured generation at the
75 // after any resizing of the tenured generation at the end
76 // of a collection of the tenured generation.
77 PerfVariable* _avg_cms_promo_counter;
78
79 // Average of the mark-sweep-compact (MSC) pause time for a collection
80 // of the tenured generation.
81 PerfVariable* _avg_msc_pause_counter;
82 // Average for the time between the most recent end of a
83 // MSC collection and the beginning of the next
84 // MSC collection.
85 PerfVariable* _avg_msc_interval_counter;
86 // Average for the GC cost of a MSC collection based on
87 // _avg_msc_pause_counter and _avg_msc_interval_counter.
88 PerfVariable* _msc_gc_cost_counter;
89
90 // Average of the mark-sweep (MS) pause time for a collection
91 // of the tenured generation.
92 PerfVariable* _avg_ms_pause_counter;
93 // Average for the time between the most recent end of a
94 // MS collection and the beginning of the next
95 // MS collection.
96 PerfVariable* _avg_ms_interval_counter;
97 // Average for the GC cost of a MS collection based on
98 // _avg_ms_pause_counter and _avg_ms_interval_counter.
99 PerfVariable* _ms_gc_cost_counter;
100
101 // Average of the bytes promoted per minor collection.
102 PerfVariable* _promoted_avg_counter;
103 // Average of the deviation of the promoted average
104 PerfVariable* _promoted_avg_dev_counter;
105 // Padded average of the bytes promoted per minor colleciton
106 PerfVariable* _promoted_padded_avg_counter;
107
108 // See description of the _change_young_gen_for_maj_pauses
109 // variable recently in cmsAdaptiveSizePolicy.hpp.
110 PerfVariable* _change_young_gen_for_maj_pauses_counter;
111
112 // See descriptions of _remark_pause_old_slope, _initial_pause_old_slope,
113 // etc. variables recently in cmsAdaptiveSizePolicy.hpp.
114 PerfVariable* _remark_pause_old_slope_counter;
115 PerfVariable* _initial_pause_old_slope_counter;
116 PerfVariable* _remark_pause_young_slope_counter;
117 PerfVariable* _initial_pause_young_slope_counter;
118
119 CMSAdaptiveSizePolicy* cms_size_policy() {
120 assert(_size_policy->kind() ==
121 AdaptiveSizePolicy::_gc_cms_adaptive_size_policy,
122 "Wrong size policy");
123 return (CMSAdaptiveSizePolicy*)_size_policy;
124 }
125
126 inline void update_avg_cms_STW_time_counter() {
127 _avg_cms_STW_time_counter->set_value(
128 (jlong) (cms_size_policy()->avg_cms_STW_time()->average() *
129 (double) MILLIUNITS));
130 }
131
132 inline void update_avg_cms_STW_gc_cost_counter() {
133 _avg_cms_STW_gc_cost_counter->set_value(
134 (jlong) (cms_size_policy()->avg_cms_STW_gc_cost()->average() * 100.0));
135 }
136
137 inline void update_avg_initial_pause_counter() {
138 _avg_initial_pause_counter->set_value(
139 (jlong) (cms_size_policy()->avg_initial_pause()->average() *
140 (double) MILLIUNITS));
141 }
142 #ifdef NOT_PRODUCT
143 inline void update_avg_remark_pause_counter() {
144 _avg_remark_pause_counter->set_value(
145 (jlong) (cms_size_policy()-> avg_remark_pause()->average() *
146 (double) MILLIUNITS));
147 }
148
149 inline void update_initial_pause_counter() {
150 _initial_pause_counter->set_value(
151 (jlong) (cms_size_policy()->avg_initial_pause()->average() *
152 (double) MILLIUNITS));
153 }
154 #endif
155 inline void update_remark_pause_counter() {
156 _remark_pause_counter->set_value(
157 (jlong) (cms_size_policy()-> avg_remark_pause()->last_sample() *
158 (double) MILLIUNITS));
159 }
160
161 inline void update_avg_concurrent_time_counter() {
162 _avg_concurrent_time_counter->set_value(
163 (jlong) (cms_size_policy()->avg_concurrent_time()->last_sample() *
164 (double) MILLIUNITS));
165 }
166
167 inline void update_avg_concurrent_interval_counter() {
168 _avg_concurrent_interval_counter->set_value(
169 (jlong) (cms_size_policy()->avg_concurrent_interval()->average() *
170 (double) MILLIUNITS));
171 }
172
173 inline void update_avg_concurrent_gc_cost_counter() {
174 _avg_concurrent_gc_cost_counter->set_value(
175 (jlong) (cms_size_policy()->avg_concurrent_gc_cost()->average() * 100.0));
176 }
177
178 inline void update_avg_cms_free_counter() {
179 _avg_cms_free_counter->set_value(
180 (jlong) cms_size_policy()->avg_cms_free()->average());
181 }
182
183 inline void update_avg_cms_free_at_sweep_counter() {
184 _avg_cms_free_at_sweep_counter->set_value(
185 (jlong) cms_size_policy()->avg_cms_free_at_sweep()->average());
186 }
187
188 inline void update_avg_cms_promo_counter() {
189 _avg_cms_promo_counter->set_value(
190 (jlong) cms_size_policy()->avg_cms_promo()->average());
191 }
192
193 inline void update_avg_old_live_counter() {
194 _avg_old_live_counter->set_value(
195 (jlong)(cms_size_policy()->avg_old_live()->average())
196 );
197 }
198
199 inline void update_avg_msc_pause_counter() {
200 _avg_msc_pause_counter->set_value(
201 (jlong) (cms_size_policy()->avg_msc_pause()->average() *
202 (double) MILLIUNITS));
203 }
204
205 inline void update_avg_msc_interval_counter() {
206 _avg_msc_interval_counter->set_value(
207 (jlong) (cms_size_policy()->avg_msc_interval()->average() *
208 (double) MILLIUNITS));
209 }
210
211 inline void update_msc_gc_cost_counter() {
212 _msc_gc_cost_counter->set_value(
213 (jlong) (cms_size_policy()->avg_msc_gc_cost()->average() * 100.0));
214 }
215
216 inline void update_avg_ms_pause_counter() {
217 _avg_ms_pause_counter->set_value(
218 (jlong) (cms_size_policy()->avg_ms_pause()->average() *
219 (double) MILLIUNITS));
220 }
221
222 inline void update_avg_ms_interval_counter() {
223 _avg_ms_interval_counter->set_value(
224 (jlong) (cms_size_policy()->avg_ms_interval()->average() *
225 (double) MILLIUNITS));
226 }
227
228 inline void update_ms_gc_cost_counter() {
229 _ms_gc_cost_counter->set_value(
230 (jlong) (cms_size_policy()->avg_ms_gc_cost()->average() * 100.0));
231 }
232
233 inline void update_major_gc_cost_counter() {
234 _major_gc_cost_counter->set_value(
235 (jlong)(cms_size_policy()->cms_gc_cost() * 100.0)
236 );
237 }
238 inline void update_mutator_cost_counter() {
239 _mutator_cost_counter->set_value(
240 (jlong)(cms_size_policy()->mutator_cost() * 100.0)
241 );
242 }
243
244 inline void update_avg_promoted_avg(CMSGCStats* gc_stats) {
245 _promoted_avg_counter->set_value(
246 (jlong)(gc_stats->avg_promoted()->average())
247 );
248 }
249 inline void update_avg_promoted_dev(CMSGCStats* gc_stats) {
250 _promoted_avg_dev_counter->set_value(
251 (jlong)(gc_stats->avg_promoted()->deviation())
252 );
253 }
254 inline void update_avg_promoted_padded_avg(CMSGCStats* gc_stats) {
255 _promoted_padded_avg_counter->set_value(
256 (jlong)(gc_stats->avg_promoted()->padded_average())
257 );
258 }
259 inline void update_remark_pause_old_slope_counter() {
260 _remark_pause_old_slope_counter->set_value(
261 (jlong)(cms_size_policy()->remark_pause_old_slope() * 1000)
262 );
263 }
264 inline void update_initial_pause_old_slope_counter() {
265 _initial_pause_old_slope_counter->set_value(
266 (jlong)(cms_size_policy()->initial_pause_old_slope() * 1000)
267 );
268 }
269 inline void update_remark_pause_young_slope_counter() {
270 _remark_pause_young_slope_counter->set_value(
271 (jlong)(cms_size_policy()->remark_pause_young_slope() * 1000)
272 );
273 }
274 inline void update_initial_pause_young_slope_counter() {
275 _initial_pause_young_slope_counter->set_value(
276 (jlong)(cms_size_policy()->initial_pause_young_slope() * 1000)
277 );
278 }
279 inline void update_change_young_gen_for_maj_pauses() {
280 _change_young_gen_for_maj_pauses_counter->set_value(
281 cms_size_policy()->change_young_gen_for_maj_pauses());
282 }
283
284 public:
285 CMSGCAdaptivePolicyCounters(const char* name, int collectors, int generations,
286 AdaptiveSizePolicy* size_policy);
287
288 // update counters
289 void update_counters();
290 void update_counters(CMSGCStats* gc_stats);
291 void update_counters_from_policy();
292
293 inline void update_cms_capacity_counter(size_t size_in_bytes) {
294 _cms_capacity_counter->set_value(size_in_bytes);
295 }
296
297 virtual GCPolicyCounters::Name kind() const {
298 return GCPolicyCounters::CMSGCAdaptivePolicyCountersKind;
299 }
300 };