1 /*
2 * Copyright (c) 2003, 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_PARALLELSCAVENGE_PSGCADAPTIVEPOLICYCOUNTERS_HPP
26 #define SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSGCADAPTIVEPOLICYCOUNTERS_HPP
27
28 #include "gc_implementation/parallelScavenge/psAdaptiveSizePolicy.hpp"
29 #include "gc_implementation/shared/gcAdaptivePolicyCounters.hpp"
30 #include "gc_implementation/shared/gcPolicyCounters.hpp"
31
32 // PSGCAdaptivePolicyCounters is a holder class for performance counters
33 // that track the data and decisions for the ergonomics policy for the
34 // parallel scavenge collector.
35
36 class PSGCAdaptivePolicyCounters : public GCAdaptivePolicyCounters {
37 friend class VMStructs;
38
39 private:
40 // survivor space vs. tenuring threshold
41 PerfVariable* _old_promo_size;
42 PerfVariable* _old_eden_size;
43 PerfVariable* _avg_promoted_avg_counter;
44 PerfVariable* _avg_promoted_dev_counter;
45 PerfVariable* _avg_promoted_padded_avg_counter;
46 PerfVariable* _avg_pretenured_padded_avg;
47
48 // young gen vs. old gen sizing
49 PerfVariable* _avg_major_pause;
50 PerfVariable* _avg_major_interval;
51 PerfVariable* _live_space;
52 PerfVariable* _free_space;
53 PerfVariable* _avg_base_footprint;
54 PerfVariable* _gc_overhead_limit_exceeded_counter;
55 PerfVariable* _live_at_last_full_gc_counter;
56 PerfVariable* _old_capacity;
57 PerfVariable* _boundary_moved;
58
59 PerfVariable* _change_old_gen_for_min_pauses;
60 PerfVariable* _change_young_gen_for_maj_pauses_counter;
61
62 PerfVariable* _major_pause_old_slope;
63 PerfVariable* _minor_pause_old_slope;
64 PerfVariable* _major_pause_young_slope;
65
66 PerfVariable* _scavenge_skipped;
67 PerfVariable* _full_follows_scavenge;
68
69 // Use this time stamp if the gc time stamp is not available.
70 TimeStamp _counter_time_stamp;
71
72 protected:
73 PSAdaptiveSizePolicy* ps_size_policy() {
74 return (PSAdaptiveSizePolicy*)_size_policy;
75 }
76
77 public:
78 PSGCAdaptivePolicyCounters(const char* name, int collectors, int generations,
79 PSAdaptiveSizePolicy* size_policy);
80 inline void update_old_capacity(size_t size_in_bytes) {
81 _old_capacity->set_value(size_in_bytes);
82 }
83 inline void update_old_eden_size(size_t old_size) {
84 _old_eden_size->set_value(old_size);
85 }
86 inline void update_old_promo_size(size_t old_size) {
87 _old_promo_size->set_value(old_size);
88 }
89 inline void update_boundary_moved(int size_in_bytes) {
90 _boundary_moved->set_value(size_in_bytes);
91 }
92 inline void update_avg_promoted_avg() {
93 _avg_promoted_avg_counter->set_value(
94 (jlong)(ps_size_policy()->avg_promoted()->average())
95 );
96 }
97 inline void update_avg_promoted_dev() {
98 _avg_promoted_dev_counter->set_value(
99 (jlong)(ps_size_policy()->avg_promoted()->deviation())
100 );
101 }
102 inline void update_avg_promoted_padded_avg() {
103 _avg_promoted_padded_avg_counter->set_value(
104 (jlong)(ps_size_policy()->avg_promoted()->padded_average())
105 );
106 }
107
108 inline void update_avg_pretenured_padded_avg() {
109 _avg_pretenured_padded_avg->set_value(
110 (jlong)(ps_size_policy()->_avg_pretenured->padded_average())
111 );
112 }
113 inline void update_change_young_gen_for_maj_pauses() {
114 _change_young_gen_for_maj_pauses_counter->set_value(
115 ps_size_policy()->change_young_gen_for_maj_pauses());
116 }
117 inline void update_change_old_gen_for_min_pauses() {
118 _change_old_gen_for_min_pauses->set_value(
119 ps_size_policy()->change_old_gen_for_min_pauses());
120 }
121
122 // compute_generations_free_space() statistics
123
124 inline void update_avg_major_pause() {
125 _avg_major_pause->set_value(
126 (jlong)(ps_size_policy()->_avg_major_pause->average() * 1000.0)
127 );
128 }
129 inline void update_avg_major_interval() {
130 _avg_major_interval->set_value(
131 (jlong)(ps_size_policy()->_avg_major_interval->average() * 1000.0)
132 );
133 }
134
135 inline void update_major_gc_cost_counter() {
136 _major_gc_cost_counter->set_value(
137 (jlong)(ps_size_policy()->major_gc_cost() * 100.0)
138 );
139 }
140 inline void update_mutator_cost_counter() {
141 _mutator_cost_counter->set_value(
142 (jlong)(ps_size_policy()->mutator_cost() * 100.0)
143 );
144 }
145
146 inline void update_live_space() {
147 _live_space->set_value(ps_size_policy()->live_space());
148 }
149 inline void update_free_space() {
150 _free_space->set_value(ps_size_policy()->free_space());
151 }
152
153 inline void update_avg_base_footprint() {
154 _avg_base_footprint->set_value(
155 (jlong)(ps_size_policy()->avg_base_footprint()->average())
156 );
157 }
158 inline void update_avg_old_live() {
159 _avg_old_live_counter->set_value(
160 (jlong)(ps_size_policy()->avg_old_live()->average())
161 );
162 }
163 // Scale up all the slopes
164 inline void update_major_pause_old_slope() {
165 _major_pause_old_slope->set_value(
166 (jlong)(ps_size_policy()->major_pause_old_slope() * 1000)
167 );
168 }
169 inline void update_minor_pause_old_slope() {
170 _minor_pause_old_slope->set_value(
171 (jlong)(ps_size_policy()->minor_pause_old_slope() * 1000)
172 );
173 }
174 inline void update_major_pause_young_slope() {
175 _major_pause_young_slope->set_value(
176 (jlong)(ps_size_policy()->major_pause_young_slope() * 1000)
177 );
178 }
179 inline void update_gc_overhead_limit_exceeded_counter() {
180 _gc_overhead_limit_exceeded_counter->set_value(
181 (jlong) ps_size_policy()->gc_overhead_limit_exceeded());
182 }
183 inline void update_live_at_last_full_gc_counter() {
184 _live_at_last_full_gc_counter->set_value(
185 (jlong)(ps_size_policy()->live_at_last_full_gc()));
186 }
187
188 inline void update_scavenge_skipped(int cause) {
189 _scavenge_skipped->set_value(cause);
190 }
191
192 inline void update_full_follows_scavenge(int event) {
193 _full_follows_scavenge->set_value(event);
194 }
195
196 // Update all the counters that can be updated from the size policy.
197 // This should be called after all policy changes have been made
198 // and reflected internall in the size policy.
199 void update_counters_from_policy();
200
201 // Update counters that can be updated from fields internal to the
202 // counter or from globals. This is distinguished from counters
203 // that are updated via input parameters.
204 void update_counters();
205
206 virtual GCPolicyCounters::Name kind() const {
207 return GCPolicyCounters::PSGCAdaptivePolicyCountersKind;
208 }
209 };
210
211 #endif // SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSGCADAPTIVEPOLICYCOUNTERS_HPP