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1 /*
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2 * Copyright 2003-2005 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 // PSGCAdaptivePolicyCounters is a holder class for performance counters
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26 // that track the data and decisions for the ergonomics policy for the
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27 // parallel scavenge collector.
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28
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29 class PSGCAdaptivePolicyCounters : public GCAdaptivePolicyCounters {
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30 friend class VMStructs;
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31
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32 private:
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33 // survivor space vs. tenuring threshold
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34 PerfVariable* _old_promo_size;
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35 PerfVariable* _old_eden_size;
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36 PerfVariable* _avg_promoted_avg_counter;
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37 PerfVariable* _avg_promoted_dev_counter;
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38 PerfVariable* _avg_promoted_padded_avg_counter;
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39 PerfVariable* _avg_pretenured_padded_avg;
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40
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41 // young gen vs. old gen sizing
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42 PerfVariable* _avg_major_pause;
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43 PerfVariable* _avg_major_interval;
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44 PerfVariable* _live_space;
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45 PerfVariable* _free_space;
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46 PerfVariable* _avg_base_footprint;
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47 PerfVariable* _gc_time_limit_exceeded;
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48 PerfVariable* _live_at_last_full_gc;
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49 PerfVariable* _old_capacity;
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50 PerfVariable* _boundary_moved;
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51
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52 PerfVariable* _change_old_gen_for_min_pauses;
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53 PerfVariable* _change_young_gen_for_maj_pauses_counter;
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54
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55 PerfVariable* _major_pause_old_slope;
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56 PerfVariable* _minor_pause_old_slope;
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57 PerfVariable* _major_pause_young_slope;
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58
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59 PerfVariable* _scavenge_skipped;
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60 PerfVariable* _full_follows_scavenge;
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61
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62 // Use this time stamp if the gc time stamp is not available.
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63 TimeStamp _counter_time_stamp;
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64
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65 protected:
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66 PSAdaptiveSizePolicy* ps_size_policy() {
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67 return (PSAdaptiveSizePolicy*)_size_policy;
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68 }
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69
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70 public:
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71 PSGCAdaptivePolicyCounters(const char* name, int collectors, int generations,
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72 PSAdaptiveSizePolicy* size_policy);
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73 inline void update_old_capacity(size_t size_in_bytes) {
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74 _old_capacity->set_value(size_in_bytes);
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75 }
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76 inline void update_old_eden_size(size_t old_size) {
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77 _old_eden_size->set_value(old_size);
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78 }
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79 inline void update_old_promo_size(size_t old_size) {
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80 _old_promo_size->set_value(old_size);
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81 }
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82 inline void update_boundary_moved(int size_in_bytes) {
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83 _boundary_moved->set_value(size_in_bytes);
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84 }
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85 inline void update_avg_promoted_avg() {
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86 _avg_promoted_avg_counter->set_value(
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87 (jlong)(ps_size_policy()->avg_promoted()->average())
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88 );
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89 }
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90 inline void update_avg_promoted_dev() {
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91 _avg_promoted_dev_counter->set_value(
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92 (jlong)(ps_size_policy()->avg_promoted()->deviation())
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93 );
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94 }
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95 inline void update_avg_promoted_padded_avg() {
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96 _avg_promoted_padded_avg_counter->set_value(
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97 (jlong)(ps_size_policy()->avg_promoted()->padded_average())
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98 );
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99 }
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100
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101 inline void update_avg_pretenured_padded_avg() {
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102 _avg_pretenured_padded_avg->set_value(
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103 (jlong)(ps_size_policy()->_avg_pretenured->padded_average())
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104 );
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105 }
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106 inline void update_change_young_gen_for_maj_pauses() {
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107 _change_young_gen_for_maj_pauses_counter->set_value(
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108 ps_size_policy()->change_young_gen_for_maj_pauses());
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109 }
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110 inline void update_change_old_gen_for_min_pauses() {
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111 _change_old_gen_for_min_pauses->set_value(
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112 ps_size_policy()->change_old_gen_for_min_pauses());
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113 }
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114
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115 // compute_generation_free_space() statistics
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116
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117 inline void update_avg_major_pause() {
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118 _avg_major_pause->set_value(
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119 (jlong)(ps_size_policy()->_avg_major_pause->average() * 1000.0)
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120 );
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121 }
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122 inline void update_avg_major_interval() {
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123 _avg_major_interval->set_value(
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124 (jlong)(ps_size_policy()->_avg_major_interval->average() * 1000.0)
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125 );
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126 }
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127
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128 inline void update_major_gc_cost_counter() {
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129 _major_gc_cost_counter->set_value(
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130 (jlong)(ps_size_policy()->major_gc_cost() * 100.0)
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131 );
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132 }
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133 inline void update_mutator_cost_counter() {
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134 _mutator_cost_counter->set_value(
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135 (jlong)(ps_size_policy()->mutator_cost() * 100.0)
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136 );
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137 }
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138
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139 inline void update_live_space() {
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140 _live_space->set_value(ps_size_policy()->live_space());
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141 }
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142 inline void update_free_space() {
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143 _free_space->set_value(ps_size_policy()->free_space());
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144 }
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145
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146 inline void update_avg_base_footprint() {
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147 _avg_base_footprint->set_value(
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148 (jlong)(ps_size_policy()->avg_base_footprint()->average())
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149 );
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150 }
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151 inline void update_avg_old_live() {
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152 _avg_old_live_counter->set_value(
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153 (jlong)(ps_size_policy()->avg_old_live()->average())
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154 );
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155 }
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156 // Scale up all the slopes
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157 inline void update_major_pause_old_slope() {
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158 _major_pause_old_slope->set_value(
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159 (jlong)(ps_size_policy()->major_pause_old_slope() * 1000)
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160 );
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161 }
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162 inline void update_minor_pause_old_slope() {
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163 _minor_pause_old_slope->set_value(
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164 (jlong)(ps_size_policy()->minor_pause_old_slope() * 1000)
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165 );
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166 }
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167 inline void update_major_pause_young_slope() {
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168 _major_pause_young_slope->set_value(
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169 (jlong)(ps_size_policy()->major_pause_young_slope() * 1000)
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170 );
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171 }
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172
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173 inline void update_scavenge_skipped(int cause) {
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174 _scavenge_skipped->set_value(cause);
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175 }
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176
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177 inline void update_full_follows_scavenge(int event) {
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178 _full_follows_scavenge->set_value(event);
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179 }
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180
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181 // Update all the counters that can be updated from the size policy.
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182 // This should be called after all policy changes have been made
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183 // and reflected internall in the size policy.
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184 void update_counters_from_policy();
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185
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186 // Update counters that can be updated from fields internal to the
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187 // counter or from globals. This is distinguished from counters
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188 // that are updated via input parameters.
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189 void update_counters();
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190
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191 virtual GCPolicyCounters::Name kind() const {
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192 return GCPolicyCounters::PSGCAdaptivePolicyCountersKind;
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193 }
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194 };
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