82 * Defines the relative amount of live set increase per second that corresponds to a rule score
83 * of 75.
84 */
85 private static final double PERCENT_OF_HEAP_INCREASE_PER_SECOND = 0.01;
86
87 private static final String RESULT_ID = "IncreasingLiveSet"; //$NON-NLS-1$
88
89 public static final TypedPreference<IQuantity> CLASSES_LOADED_PERCENT = new TypedPreference<>(
90 "memleak.classload.percent", Messages.getString(Messages.IncreasingLiveSetRule_LOADED_CLASSES_PERCENT), //$NON-NLS-1$
91 Messages.getString(Messages.IncreasingLiveSetRule_LOADED_CLASSES_PERCENT_DESC), PERCENTAGE,
92 PERCENT.quantity(90));
93 public static final TypedPreference<IQuantity> RELEVANCE_THRESHOLD = new TypedPreference<>(
94 "memleak.reference.tree.depth", Messages.getString(Messages.IncreasingLiveSetRule_RELEVANCE_THRESHOLD), //$NON-NLS-1$
95 Messages.getString(Messages.IncreasingLiveSetRule_RELEVANCE_THRESHOLD_DESC), NUMBER,
96 NUMBER_UNITY.quantity(0.5d));
97 private static final List<TypedPreference<?>> CONFIG_ATTRIBUTES = Arrays
98 .<TypedPreference<?>> asList(CLASSES_LOADED_PERCENT, RELEVANCE_THRESHOLD);
99
100 private Result getResult(IItemCollection items, IPreferenceValueProvider valueProvider) {
101 EventAvailability eventAvailability = RulesToolkit.getEventAvailability(items, JdkTypeIDs.HEAP_SUMMARY);
102 if (eventAvailability == EventAvailability.UNAVAILABLE || eventAvailability == EventAvailability.DISABLED) {
103 return RulesToolkit.getEventAvailabilityResult(this, items, eventAvailability, JdkTypeIDs.HEAP_SUMMARY);
104 }
105
106 IQuantity postWarmupTime = getPostWarmupTime(items, valueProvider.getPreferenceValue(CLASSES_LOADED_PERCENT));
107 Iterator<? extends IItemIterable> allAfterItems = items.apply(JdkFilters.HEAP_SUMMARY_AFTER_GC).iterator();
108 double score = 0;
109 IQuantity liveSetIncreasePerSecond = UnitLookup.MEMORY.getUnit(BinaryPrefix.MEBI).quantity(0);
110 if (allAfterItems.hasNext()) {
111 // FIXME: Handle multiple IItemIterable
112 IItemIterable afterItems = allAfterItems.next();
113 IMemberAccessor<IQuantity, IItem> timeAccessor = JfrAttributes.END_TIME.getAccessor(afterItems.getType());
114 IMemberAccessor<IQuantity, IItem> memAccessor = JdkAttributes.HEAP_USED.getAccessor(afterItems.getType());
115
116 liveSetIncreasePerSecond = UnitLookup.MEMORY.getUnit(BinaryPrefix.MEBI)
117 .quantity(RulesToolkit.leastSquareMemory(afterItems.iterator(), timeAccessor, memAccessor));
118
119 if (postWarmupTime == null) {
120 return RulesToolkit.getTooFewEventsResult(this);
121 }
122 IQuantity postWarmupHeapSize = items
123 .apply(ItemFilters.and(JdkFilters.HEAP_SUMMARY_AFTER_GC,
124 ItemFilters.moreOrEqual(JfrAttributes.START_TIME, postWarmupTime)))
125 .getAggregate(JdkAggregators.first(JdkAttributes.HEAP_USED));
126 if (postWarmupHeapSize == null) {
127 return RulesToolkit.getTooFewEventsResult(this);
128 }
129 double relativeIncreasePerSecond = liveSetIncreasePerSecond.ratioTo(postWarmupHeapSize);
130 score = RulesToolkit.mapExp100(relativeIncreasePerSecond, PERCENT_OF_HEAP_INCREASE_PER_SECOND);
131 }
132 // If we have Old Object Sample events we can attempt to find suitable memory leak class candidates
133 // otherwise we just return the basic increasing live set score
134 EventAvailability ea = RulesToolkit.getEventAvailability(items, JdkTypeIDs.OLD_OBJECT_SAMPLE);
135 // FIXME: Should construct an message using memoryIncrease, not use a hard limit
136 if (score >= 25 && (ea == EventAvailability.DISABLED || ea == EventAvailability.UNAVAILABLE)) {
137 String shortMessage = MessageFormat.format(
138 Messages.getString(Messages.IncreasingLiveSetRuleFactory_TEXT_INFO),
139 liveSetIncreasePerSecond.displayUsing(IDisplayable.AUTO));
140 String longMessage = shortMessage + "<p>" //$NON-NLS-1$
141 + Messages.getString(Messages.IncreasingLiveSetRuleFactory_TEXT_INFO_LONG);
142 return new Result(this, score, shortMessage, longMessage, JdkQueries.HEAP_SUMMARY_AFTER_GC);
143 } else if (score < 25) {
144 return new Result(this, score, Messages.getString(Messages.IncreasingLiveSetRule_TEXT_OK));
145 }
146
147 // step 1. extract events from after the estimated warmup period
148 IItemCollection oldObjectItems = items.apply(ItemFilters.and(ItemFilters.type(JdkTypeIDs.OLD_OBJECT_SAMPLE),
149 ItemFilters.more(JfrAttributes.START_TIME, postWarmupTime)));
150
151 ReferenceTreeModel tree = ReferenceTreeModel.buildReferenceTree(oldObjectItems);
152
153 // step 2. perform a balance calculation on the old object sample events aggregated by class count
154 boolean anyReferrerChains = false;
155 for (ReferenceTreeObject referenceTreeObject : tree.getLeakObjects()) {
156 if (referenceTreeObject.getParent() != null) {
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82 * Defines the relative amount of live set increase per second that corresponds to a rule score
83 * of 75.
84 */
85 private static final double PERCENT_OF_HEAP_INCREASE_PER_SECOND = 0.01;
86
87 private static final String RESULT_ID = "IncreasingLiveSet"; //$NON-NLS-1$
88
89 public static final TypedPreference<IQuantity> CLASSES_LOADED_PERCENT = new TypedPreference<>(
90 "memleak.classload.percent", Messages.getString(Messages.IncreasingLiveSetRule_LOADED_CLASSES_PERCENT), //$NON-NLS-1$
91 Messages.getString(Messages.IncreasingLiveSetRule_LOADED_CLASSES_PERCENT_DESC), PERCENTAGE,
92 PERCENT.quantity(90));
93 public static final TypedPreference<IQuantity> RELEVANCE_THRESHOLD = new TypedPreference<>(
94 "memleak.reference.tree.depth", Messages.getString(Messages.IncreasingLiveSetRule_RELEVANCE_THRESHOLD), //$NON-NLS-1$
95 Messages.getString(Messages.IncreasingLiveSetRule_RELEVANCE_THRESHOLD_DESC), NUMBER,
96 NUMBER_UNITY.quantity(0.5d));
97 private static final List<TypedPreference<?>> CONFIG_ATTRIBUTES = Arrays
98 .<TypedPreference<?>> asList(CLASSES_LOADED_PERCENT, RELEVANCE_THRESHOLD);
99
100 private Result getResult(IItemCollection items, IPreferenceValueProvider valueProvider) {
101 EventAvailability eventAvailability = RulesToolkit.getEventAvailability(items, JdkTypeIDs.HEAP_SUMMARY);
102 if (eventAvailability == EventAvailability.UNKNOWN || eventAvailability == EventAvailability.DISABLED) {
103 return RulesToolkit.getEventAvailabilityResult(this, items, eventAvailability, JdkTypeIDs.HEAP_SUMMARY);
104 }
105
106 IQuantity postWarmupTime = getPostWarmupTime(items, valueProvider.getPreferenceValue(CLASSES_LOADED_PERCENT));
107 Iterator<? extends IItemIterable> allAfterItems = items.apply(JdkFilters.HEAP_SUMMARY_AFTER_GC).iterator();
108 double score = 0;
109 IQuantity liveSetIncreasePerSecond = UnitLookup.MEMORY.getUnit(BinaryPrefix.MEBI).quantity(0);
110 if (allAfterItems.hasNext()) {
111 // FIXME: Handle multiple IItemIterable
112 IItemIterable afterItems = allAfterItems.next();
113 IMemberAccessor<IQuantity, IItem> timeAccessor = JfrAttributes.END_TIME.getAccessor(afterItems.getType());
114 IMemberAccessor<IQuantity, IItem> memAccessor = JdkAttributes.HEAP_USED.getAccessor(afterItems.getType());
115
116 liveSetIncreasePerSecond = UnitLookup.MEMORY.getUnit(BinaryPrefix.MEBI)
117 .quantity(RulesToolkit.leastSquareMemory(afterItems.iterator(), timeAccessor, memAccessor));
118
119 if (postWarmupTime == null) {
120 return RulesToolkit.getTooFewEventsResult(this);
121 }
122 IQuantity postWarmupHeapSize = items
123 .apply(ItemFilters.and(JdkFilters.HEAP_SUMMARY_AFTER_GC,
124 ItemFilters.moreOrEqual(JfrAttributes.START_TIME, postWarmupTime)))
125 .getAggregate(JdkAggregators.first(JdkAttributes.HEAP_USED));
126 if (postWarmupHeapSize == null) {
127 return RulesToolkit.getTooFewEventsResult(this);
128 }
129 double relativeIncreasePerSecond = liveSetIncreasePerSecond.ratioTo(postWarmupHeapSize);
130 score = RulesToolkit.mapExp100(relativeIncreasePerSecond, PERCENT_OF_HEAP_INCREASE_PER_SECOND);
131 }
132 // If we have Old Object Sample events we can attempt to find suitable memory leak class candidates
133 // otherwise we just return the basic increasing live set score
134 EventAvailability ea = RulesToolkit.getEventAvailability(items, JdkTypeIDs.OLD_OBJECT_SAMPLE);
135 // FIXME: Should construct an message using memoryIncrease, not use a hard limit
136 if (score >= 25 && (ea == EventAvailability.DISABLED || ea == EventAvailability.UNKNOWN)) {
137 String shortMessage = MessageFormat.format(
138 Messages.getString(Messages.IncreasingLiveSetRuleFactory_TEXT_INFO),
139 liveSetIncreasePerSecond.displayUsing(IDisplayable.AUTO));
140 String longMessage = shortMessage + "<p>" //$NON-NLS-1$
141 + Messages.getString(Messages.IncreasingLiveSetRuleFactory_TEXT_INFO_LONG);
142 return new Result(this, score, shortMessage, longMessage, JdkQueries.HEAP_SUMMARY_AFTER_GC);
143 } else if (score < 25) {
144 return new Result(this, score, Messages.getString(Messages.IncreasingLiveSetRule_TEXT_OK));
145 }
146
147 // step 1. extract events from after the estimated warmup period
148 IItemCollection oldObjectItems = items.apply(ItemFilters.and(ItemFilters.type(JdkTypeIDs.OLD_OBJECT_SAMPLE),
149 ItemFilters.more(JfrAttributes.START_TIME, postWarmupTime)));
150
151 ReferenceTreeModel tree = ReferenceTreeModel.buildReferenceTree(oldObjectItems);
152
153 // step 2. perform a balance calculation on the old object sample events aggregated by class count
154 boolean anyReferrerChains = false;
155 for (ReferenceTreeObject referenceTreeObject : tree.getLeakObjects()) {
156 if (referenceTreeObject.getParent() != null) {
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