Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/runtime/advancedThresholdPolicy.cpp
src/share/vm/runtime/advancedThresholdPolicy.cpp
- changeset 5151
- 91eba9f82325
- parent 4936
- aeaca88565e6
- child 6649
- 7150b16fda52
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| 5130:7ec426e29e4c | 5151:91eba9f82325 |
|---|---|
| 66 if (FLAG_IS_DEFAULT(InlineSmallCode)) { | 66 if (FLAG_IS_DEFAULT(InlineSmallCode)) { |
| 67 FLAG_SET_DEFAULT(InlineSmallCode, 2500); | 67 FLAG_SET_DEFAULT(InlineSmallCode, 2500); |
| 68 } | 68 } |
| 69 #endif | 69 #endif |
| 70 | 70 |
| 71 | 71 set_increase_threshold_at_ratio(); |
| 72 set_start_time(os::javaTimeMillis()); | 72 set_start_time(os::javaTimeMillis()); |
| 73 } | 73 } |
| 74 | 74 |
| 75 // update_rate() is called from select_task() while holding a compile queue lock. | 75 // update_rate() is called from select_task() while holding a compile queue lock. |
| 76 void AdvancedThresholdPolicy::update_rate(jlong t, Method* m) { | 76 void AdvancedThresholdPolicy::update_rate(jlong t, Method* m) { |
| 203 | 203 |
| 204 double AdvancedThresholdPolicy::threshold_scale(CompLevel level, int feedback_k) { | 204 double AdvancedThresholdPolicy::threshold_scale(CompLevel level, int feedback_k) { |
| 205 double queue_size = CompileBroker::queue_size(level); | 205 double queue_size = CompileBroker::queue_size(level); |
| 206 int comp_count = compiler_count(level); | 206 int comp_count = compiler_count(level); |
| 207 double k = queue_size / (feedback_k * comp_count) + 1; | 207 double k = queue_size / (feedback_k * comp_count) + 1; |
| 208 | |
| 209 // Increase C1 compile threshold when the code cache is filled more | |
| 210 // than specified by IncreaseFirstTierCompileThresholdAt percentage. | |
| 211 // The main intention is to keep enough free space for C2 compiled code | |
| 212 // to achieve peak performance if the code cache is under stress. | |
| 213 if ((TieredStopAtLevel == CompLevel_full_optimization) && (level != CompLevel_full_optimization)) { | |
| 214 double current_reverse_free_ratio = CodeCache::reverse_free_ratio(); | |
| 215 if (current_reverse_free_ratio > _increase_threshold_at_ratio) { | |
| 216 k *= exp(current_reverse_free_ratio - _increase_threshold_at_ratio); | |
| 217 } | |
| 218 } | |
| 208 return k; | 219 return k; |
| 209 } | 220 } |
| 210 | 221 |
| 211 // Call and loop predicates determine whether a transition to a higher | 222 // Call and loop predicates determine whether a transition to a higher |
| 212 // compilation level should be performed (pointers to predicate functions | 223 // compilation level should be performed (pointers to predicate functions |
