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
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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
92 // MSC collection.
93 PerfVariable* _avg_msc_interval_counter;
94 // Average for the GC cost of a MSC collection based on
95 // _avg_msc_pause_counter and _avg_msc_interval_counter.
96 PerfVariable* _msc_gc_cost_counter;
97
98 // Average of the mark-sweep (MS) pause time for a collection
99 // of the tenured generation.
100 PerfVariable* _avg_ms_pause_counter;
101 // Average for the time between the most recent end of a
102 // MS collection and the beginning of the next
103 // MS collection.
104 PerfVariable* _avg_ms_interval_counter;
105 // Average for the GC cost of a MS collection based on
106 // _avg_ms_pause_counter and _avg_ms_interval_counter.
107 PerfVariable* _ms_gc_cost_counter;
108
109 // Average of the bytes promoted per minor collection.
110 PerfVariable* _promoted_avg_counter;
111 // Average of the deviation of the promoted average
112 PerfVariable* _promoted_avg_dev_counter;
113 // Padded average of the bytes promoted per minor colleciton
114 PerfVariable* _promoted_padded_avg_counter;
115
116 // See description of the _change_young_gen_for_maj_pauses
117 // variable recently in cmsAdaptiveSizePolicy.hpp.
118 PerfVariable* _change_young_gen_for_maj_pauses_counter;
119
120 // See descriptions of _remark_pause_old_slope, _initial_pause_old_slope,
121 // etc. variables recently in cmsAdaptiveSizePolicy.hpp.
122 PerfVariable* _remark_pause_old_slope_counter;
123 PerfVariable* _initial_pause_old_slope_counter;
124 PerfVariable* _remark_pause_young_slope_counter;
125 PerfVariable* _initial_pause_young_slope_counter;
126
127 CMSAdaptiveSizePolicy* cms_size_policy() {
128 assert(_size_policy->kind() ==
129 AdaptiveSizePolicy::_gc_cms_adaptive_size_policy,
130 "Wrong size policy");
131 return (CMSAdaptiveSizePolicy*)_size_policy;
132 }
133
134 inline void update_avg_cms_STW_time_counter() {
135 _avg_cms_STW_time_counter->set_value(
136 (jlong) (cms_size_policy()->avg_cms_STW_time()->average() *
137 (double) MILLIUNITS));
138 }
139
140 inline void update_avg_cms_STW_gc_cost_counter() {
141 _avg_cms_STW_gc_cost_counter->set_value(
142 (jlong) (cms_size_policy()->avg_cms_STW_gc_cost()->average() * 100.0));
143 }
144
145 inline void update_avg_initial_pause_counter() {
146 _avg_initial_pause_counter->set_value(
147 (jlong) (cms_size_policy()->avg_initial_pause()->average() *
148 (double) MILLIUNITS));
149 }
150 #ifdef NOT_PRODUCT
151 inline void update_avg_remark_pause_counter() {
152 _avg_remark_pause_counter->set_value(
153 (jlong) (cms_size_policy()-> avg_remark_pause()->average() *
154 (double) MILLIUNITS));
155 }
156
157 inline void update_initial_pause_counter() {
158 _initial_pause_counter->set_value(
159 (jlong) (cms_size_policy()->avg_initial_pause()->average() *
160 (double) MILLIUNITS));
161 }
162 #endif
163 inline void update_remark_pause_counter() {
164 _remark_pause_counter->set_value(
165 (jlong) (cms_size_policy()-> avg_remark_pause()->last_sample() *
166 (double) MILLIUNITS));
167 }
168
169 inline void update_avg_concurrent_time_counter() {
170 _avg_concurrent_time_counter->set_value(
171 (jlong) (cms_size_policy()->avg_concurrent_time()->last_sample() *
172 (double) MILLIUNITS));
173 }
174
175 inline void update_avg_concurrent_interval_counter() {
176 _avg_concurrent_interval_counter->set_value(
177 (jlong) (cms_size_policy()->avg_concurrent_interval()->average() *
178 (double) MILLIUNITS));
179 }
180
181 inline void update_avg_concurrent_gc_cost_counter() {
182 _avg_concurrent_gc_cost_counter->set_value(
183 (jlong) (cms_size_policy()->avg_concurrent_gc_cost()->average() * 100.0));
184 }
185
186 inline void update_avg_cms_free_counter() {
187 _avg_cms_free_counter->set_value(
188 (jlong) cms_size_policy()->avg_cms_free()->average());
189 }
190
191 inline void update_avg_cms_free_at_sweep_counter() {
192 _avg_cms_free_at_sweep_counter->set_value(
193 (jlong) cms_size_policy()->avg_cms_free_at_sweep()->average());
194 }
195
196 inline void update_avg_cms_promo_counter() {
197 _avg_cms_promo_counter->set_value(
198 (jlong) cms_size_policy()->avg_cms_promo()->average());
199 }
200
201 inline void update_avg_old_live_counter() {
202 _avg_old_live_counter->set_value(
203 (jlong)(cms_size_policy()->avg_old_live()->average())
204 );
205 }
206
207 inline void update_avg_msc_pause_counter() {
208 _avg_msc_pause_counter->set_value(
209 (jlong) (cms_size_policy()->avg_msc_pause()->average() *
210 (double) MILLIUNITS));
211 }
212
213 inline void update_avg_msc_interval_counter() {
214 _avg_msc_interval_counter->set_value(
215 (jlong) (cms_size_policy()->avg_msc_interval()->average() *
216 (double) MILLIUNITS));
217 }
218
219 inline void update_msc_gc_cost_counter() {
220 _msc_gc_cost_counter->set_value(
221 (jlong) (cms_size_policy()->avg_msc_gc_cost()->average() * 100.0));
222 }
223
224 inline void update_avg_ms_pause_counter() {
225 _avg_ms_pause_counter->set_value(
226 (jlong) (cms_size_policy()->avg_ms_pause()->average() *
227 (double) MILLIUNITS));
228 }
229
230 inline void update_avg_ms_interval_counter() {
231 _avg_ms_interval_counter->set_value(
232 (jlong) (cms_size_policy()->avg_ms_interval()->average() *
233 (double) MILLIUNITS));
234 }
235
236 inline void update_ms_gc_cost_counter() {
237 _ms_gc_cost_counter->set_value(
238 (jlong) (cms_size_policy()->avg_ms_gc_cost()->average() * 100.0));
239 }
240
241 inline void update_major_gc_cost_counter() {
242 _major_gc_cost_counter->set_value(
243 (jlong)(cms_size_policy()->cms_gc_cost() * 100.0)
244 );
245 }
246 inline void update_mutator_cost_counter() {
247 _mutator_cost_counter->set_value(
248 (jlong)(cms_size_policy()->mutator_cost() * 100.0)
249 );
250 }
251
252 inline void update_avg_promoted_avg(CMSGCStats* gc_stats) {
253 _promoted_avg_counter->set_value(
254 (jlong)(gc_stats->avg_promoted()->average())
255 );
256 }
257 inline void update_avg_promoted_dev(CMSGCStats* gc_stats) {
258 _promoted_avg_dev_counter->set_value(
259 (jlong)(gc_stats->avg_promoted()->deviation())
260 );
261 }
262 inline void update_avg_promoted_padded_avg(CMSGCStats* gc_stats) {
263 _promoted_padded_avg_counter->set_value(
264 (jlong)(gc_stats->avg_promoted()->padded_average())
265 );
266 }
267 inline void update_remark_pause_old_slope_counter() {
268 _remark_pause_old_slope_counter->set_value(
269 (jlong)(cms_size_policy()->remark_pause_old_slope() * 1000)
270 );
271 }
272 inline void update_initial_pause_old_slope_counter() {
273 _initial_pause_old_slope_counter->set_value(
274 (jlong)(cms_size_policy()->initial_pause_old_slope() * 1000)
275 );
276 }
277 inline void update_remark_pause_young_slope_counter() {
278 _remark_pause_young_slope_counter->set_value(
279 (jlong)(cms_size_policy()->remark_pause_young_slope() * 1000)
280 );
281 }
282 inline void update_initial_pause_young_slope_counter() {
283 _initial_pause_young_slope_counter->set_value(
284 (jlong)(cms_size_policy()->initial_pause_young_slope() * 1000)
285 );
286 }
287 inline void update_change_young_gen_for_maj_pauses() {
288 _change_young_gen_for_maj_pauses_counter->set_value(
289 cms_size_policy()->change_young_gen_for_maj_pauses());
290 }
291
292 public:
293 CMSGCAdaptivePolicyCounters(const char* name, int collectors, int generations,
294 AdaptiveSizePolicy* size_policy);
295
296 // update counters
297 void update_counters();
298 void update_counters(CMSGCStats* gc_stats);
299 void update_counters_from_policy();
300
301 inline void update_cms_capacity_counter(size_t size_in_bytes) {
302 _cms_capacity_counter->set_value(size_in_bytes);
303 }
304
305 virtual GCPolicyCounters::Name kind() const {
306 return GCPolicyCounters::CMSGCAdaptivePolicyCountersKind;
307 }
308 };
309
310 #endif // SHARE_VM_GC_IMPLEMENTATION_CONCURRENTMARKSWEEP_CMSGCADAPTIVEPOLICYCOUNTERS_HPP