1 /*
2 * Copyright (c) 2004, 2010, 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 #ifndef SHARE_VM_GC_IMPLEMENTATION_CONCURRENTMARKSWEEP_CMSGCADAPTIVEPOLICYCOUNTERS_HPP
26 #define SHARE_VM_GC_IMPLEMENTATION_CONCURRENTMARKSWEEP_CMSGCADAPTIVEPOLICYCOUNTERS_HPP
27
28 #include "gc_implementation/concurrentMarkSweep/cmsAdaptiveSizePolicy.hpp"
29 #include "gc_implementation/shared/gcAdaptivePolicyCounters.hpp"
30 #include "gc_implementation/shared/gcStats.hpp"
31 #include "runtime/perfData.hpp"
32
33 // CMSGCAdaptivePolicyCounters is a holder class for performance counters
34 // that track the data and decisions for the ergonomics policy for the
35 // concurrent mark sweep collector
36
37 class CMSGCAdaptivePolicyCounters : public GCAdaptivePolicyCounters {
38 friend class VMStructs;
39
40 private:
41
42 // Capacity of tenured generation recorded at the end of
43 // any collection.
44 PerfVariable* _cms_capacity_counter; // Make this common with PS _old_capacity
45
46 // Average stop-the-world pause time for both initial and
47 // remark pauses sampled at the end of the checkpointRootsFinalWork.
48 PerfVariable* _avg_cms_STW_time_counter;
49 // Average stop-the-world (STW) GC cost for the STW pause time
50 // _avg_cms_STW_time_counter.
51 PerfVariable* _avg_cms_STW_gc_cost_counter;
52
53 #ifdef NOT_PRODUCT
54 // These are useful to see how the most recent values of these
55 // counters compare to their respective averages but
56 // do not control behavior.
57 PerfVariable* _initial_pause_counter;
58 PerfVariable* _remark_pause_counter;
59 #endif
60
61 // Average of the initial marking pause for a concurrent collection.
62 PerfVariable* _avg_initial_pause_counter;
63 // Average of the remark pause for a concurrent collection.
64 PerfVariable* _avg_remark_pause_counter;
65
66 // Average for the sum of all the concurrent times per collection.
67 PerfVariable* _avg_concurrent_time_counter;
68 // Average for the time between the most recent end of a
69 // concurrent collection and the beginning of the next
70 // concurrent collection.
71 PerfVariable* _avg_concurrent_interval_counter;
72 // Average of the concurrent GC costs based on _avg_concurrent_time_counter
73 // and _avg_concurrent_interval_counter.
74 PerfVariable* _avg_concurrent_gc_cost_counter;
75
76 // Average of the free space in the tenured generation at the
77 // end of the sweep of the tenured generation.
78 PerfVariable* _avg_cms_free_counter;
79 // Average of the free space in the tenured generation at the
80 // start of the sweep of the tenured generation.
81 PerfVariable* _avg_cms_free_at_sweep_counter;
82 // Average of the free space in the tenured generation at the
83 // after any resizing of the tenured generation at the end
84 // of a collection of the tenured generation.
85 PerfVariable* _avg_cms_promo_counter;
86
87 // Average of the mark-sweep-compact (MSC) pause time for a collection
88 // of the tenured generation.
89 PerfVariable* _avg_msc_pause_counter;
90 // Average for the time between the most recent end of a
91 // MSC collection and the beginning of the next MSC collection.
92 PerfVariable* _avg_msc_interval_counter;
93 // Average for the GC cost of a MSC collection based on
94 // _avg_msc_pause_counter and _avg_msc_interval_counter.
95 PerfVariable* _msc_gc_cost_counter;
96
97 // Average of the mark-sweep (MS) pause time for a collection
98 // of the tenured generation.
99 PerfVariable* _avg_ms_pause_counter;
100 // Average for the time between the most recent end of a
101 // MS collection and the beginning of the next MS collection.
102 PerfVariable* _avg_ms_interval_counter;
103 // Average for the GC cost of a MS collection based on
104 // _avg_ms_pause_counter and _avg_ms_interval_counter.
105 PerfVariable* _ms_gc_cost_counter;
106
107 // Average of the bytes promoted per minor collection.
108 PerfVariable* _promoted_avg_counter;
109 // Average of the deviation of the promoted average.
110 PerfVariable* _promoted_avg_dev_counter;
111 // Padded average of the bytes promoted per minor collection.
112 PerfVariable* _promoted_padded_avg_counter;
113
114 // See description of the _change_young_gen_for_maj_pauses
115 // variable recently in cmsAdaptiveSizePolicy.hpp.
116 PerfVariable* _change_young_gen_for_maj_pauses_counter;
117
118 // See descriptions of _remark_pause_old_slope, _initial_pause_old_slope,
119 // etc. variables recently in cmsAdaptiveSizePolicy.hpp.
120 PerfVariable* _remark_pause_old_slope_counter;
121 PerfVariable* _initial_pause_old_slope_counter;
122 PerfVariable* _remark_pause_young_slope_counter;
123 PerfVariable* _initial_pause_young_slope_counter;
124
125 CMSAdaptiveSizePolicy* cms_size_policy() {
126 assert(_size_policy->kind() ==
127 AdaptiveSizePolicy::_gc_cms_adaptive_size_policy,
128 "Wrong size policy");
129 return (CMSAdaptiveSizePolicy*)_size_policy;
130 }
131
132 inline void update_avg_cms_STW_time_counter() {
133 _avg_cms_STW_time_counter->set_value(
134 (jlong) (cms_size_policy()->avg_cms_STW_time()->average() *
135 (double) MILLIUNITS));
136 }
137
138 inline void update_avg_cms_STW_gc_cost_counter() {
139 _avg_cms_STW_gc_cost_counter->set_value(
140 (jlong) (cms_size_policy()->avg_cms_STW_gc_cost()->average() * 100.0));
141 }
142
143 inline void update_avg_initial_pause_counter() {
144 _avg_initial_pause_counter->set_value(
145 (jlong) (cms_size_policy()->avg_initial_pause()->average() *
146 (double) MILLIUNITS));
147 }
148 #ifdef NOT_PRODUCT
149 inline void update_avg_remark_pause_counter() {
150 _avg_remark_pause_counter->set_value(
151 (jlong) (cms_size_policy()-> avg_remark_pause()->average() *
152 (double) MILLIUNITS));
153 }
154
155 inline void update_initial_pause_counter() {
156 _initial_pause_counter->set_value(
157 (jlong) (cms_size_policy()->avg_initial_pause()->average() *
158 (double) MILLIUNITS));
159 }
160 #endif
161 inline void update_remark_pause_counter() {
162 _remark_pause_counter->set_value(
163 (jlong) (cms_size_policy()-> avg_remark_pause()->last_sample() *
164 (double) MILLIUNITS));
165 }
166
167 inline void update_avg_concurrent_time_counter() {
168 _avg_concurrent_time_counter->set_value(
169 (jlong) (cms_size_policy()->avg_concurrent_time()->last_sample() *
170 (double) MILLIUNITS));
171 }
172
173 inline void update_avg_concurrent_interval_counter() {
174 _avg_concurrent_interval_counter->set_value(
175 (jlong) (cms_size_policy()->avg_concurrent_interval()->average() *
176 (double) MILLIUNITS));
177 }
178
179 inline void update_avg_concurrent_gc_cost_counter() {
180 _avg_concurrent_gc_cost_counter->set_value(
181 (jlong) (cms_size_policy()->avg_concurrent_gc_cost()->average() * 100.0));
182 }
183
184 inline void update_avg_cms_free_counter() {
185 _avg_cms_free_counter->set_value(
186 (jlong) cms_size_policy()->avg_cms_free()->average());
187 }
188
189 inline void update_avg_cms_free_at_sweep_counter() {
190 _avg_cms_free_at_sweep_counter->set_value(
191 (jlong) cms_size_policy()->avg_cms_free_at_sweep()->average());
192 }
193
194 inline void update_avg_cms_promo_counter() {
195 _avg_cms_promo_counter->set_value(
196 (jlong) cms_size_policy()->avg_cms_promo()->average());
197 }
198
199 inline void update_avg_old_live_counter() {
200 _avg_old_live_counter->set_value(
201 (jlong)(cms_size_policy()->avg_old_live()->average())
202 );
203 }
204
205 inline void update_avg_msc_pause_counter() {
206 _avg_msc_pause_counter->set_value(
207 (jlong) (cms_size_policy()->avg_msc_pause()->average() *
208 (double) MILLIUNITS));
209 }
210
211 inline void update_avg_msc_interval_counter() {
212 _avg_msc_interval_counter->set_value(
213 (jlong) (cms_size_policy()->avg_msc_interval()->average() *
214 (double) MILLIUNITS));
215 }
216
217 inline void update_msc_gc_cost_counter() {
218 _msc_gc_cost_counter->set_value(
219 (jlong) (cms_size_policy()->avg_msc_gc_cost()->average() * 100.0));
220 }
221
222 inline void update_avg_ms_pause_counter() {
223 _avg_ms_pause_counter->set_value(
224 (jlong) (cms_size_policy()->avg_ms_pause()->average() *
225 (double) MILLIUNITS));
226 }
227
228 inline void update_avg_ms_interval_counter() {
229 _avg_ms_interval_counter->set_value(
230 (jlong) (cms_size_policy()->avg_ms_interval()->average() *
231 (double) MILLIUNITS));
232 }
233
234 inline void update_ms_gc_cost_counter() {
235 _ms_gc_cost_counter->set_value(
236 (jlong) (cms_size_policy()->avg_ms_gc_cost()->average() * 100.0));
237 }
238
239 inline void update_major_gc_cost_counter() {
240 _major_gc_cost_counter->set_value(
241 (jlong)(cms_size_policy()->cms_gc_cost() * 100.0)
242 );
243 }
244 inline void update_mutator_cost_counter() {
245 _mutator_cost_counter->set_value(
246 (jlong)(cms_size_policy()->mutator_cost() * 100.0)
247 );
248 }
249
250 inline void update_avg_promoted_avg(CMSGCStats* gc_stats) {
251 _promoted_avg_counter->set_value(
252 (jlong)(gc_stats->avg_promoted()->average())
253 );
254 }
255 inline void update_avg_promoted_dev(CMSGCStats* gc_stats) {
256 _promoted_avg_dev_counter->set_value(
257 (jlong)(gc_stats->avg_promoted()->deviation())
258 );
259 }
260 inline void update_avg_promoted_padded_avg(CMSGCStats* gc_stats) {
261 _promoted_padded_avg_counter->set_value(
262 (jlong)(gc_stats->avg_promoted()->padded_average())
263 );
264 }
265 inline void update_remark_pause_old_slope_counter() {
266 _remark_pause_old_slope_counter->set_value(
267 (jlong)(cms_size_policy()->remark_pause_old_slope() * 1000)
268 );
269 }
270 inline void update_initial_pause_old_slope_counter() {
271 _initial_pause_old_slope_counter->set_value(
272 (jlong)(cms_size_policy()->initial_pause_old_slope() * 1000)
273 );
274 }
275 inline void update_remark_pause_young_slope_counter() {
276 _remark_pause_young_slope_counter->set_value(
277 (jlong)(cms_size_policy()->remark_pause_young_slope() * 1000)
278 );
279 }
280 inline void update_initial_pause_young_slope_counter() {
281 _initial_pause_young_slope_counter->set_value(
282 (jlong)(cms_size_policy()->initial_pause_young_slope() * 1000)
283 );
284 }
285 inline void update_change_young_gen_for_maj_pauses() {
286 _change_young_gen_for_maj_pauses_counter->set_value(
287 cms_size_policy()->change_young_gen_for_maj_pauses());
288 }
289
290 public:
291 CMSGCAdaptivePolicyCounters(const char* name, int collectors, int generations,
292 AdaptiveSizePolicy* size_policy);
293
294 // update counters
295 void update_counters();
296 void update_counters(CMSGCStats* gc_stats);
297 void update_counters_from_policy();
298
299 inline void update_cms_capacity_counter(size_t size_in_bytes) {
300 _cms_capacity_counter->set_value(size_in_bytes);
301 }
302
303 virtual GCPolicyCounters::Name kind() const {
304 return GCPolicyCounters::CMSGCAdaptivePolicyCountersKind;
305 }
306 };
307
308 #endif // SHARE_VM_GC_IMPLEMENTATION_CONCURRENTMARKSWEEP_CMSGCADAPTIVEPOLICYCOUNTERS_HPP