1 /* 2 * Copyright (c) 2003, 2013, 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 internally 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