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core/org.openjdk.jmc.flightrecorder.rules.jdk/src/main/java/org/openjdk/jmc/flightrecorder/rules/jdk/memory/IncreasingMetaspaceLiveSetRule.java

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  49 import org.openjdk.jmc.common.util.IPreferenceValueProvider;
  50 import org.openjdk.jmc.common.util.TypedPreference;
  51 import org.openjdk.jmc.flightrecorder.JfrAttributes;
  52 import org.openjdk.jmc.flightrecorder.jdk.JdkAttributes;
  53 import org.openjdk.jmc.flightrecorder.jdk.JdkFilters;
  54 import org.openjdk.jmc.flightrecorder.jdk.JdkQueries;
  55 import org.openjdk.jmc.flightrecorder.jdk.JdkTypeIDs;
  56 import org.openjdk.jmc.flightrecorder.rules.IRule;
  57 import org.openjdk.jmc.flightrecorder.rules.Result;
  58 import org.openjdk.jmc.flightrecorder.rules.jdk.messages.internal.Messages;
  59 import org.openjdk.jmc.flightrecorder.rules.util.JfrRuleTopics;
  60 import org.openjdk.jmc.flightrecorder.rules.util.RulesToolkit;
  61 import org.openjdk.jmc.flightrecorder.rules.util.RulesToolkit.EventAvailability;
  62 
  63 public class IncreasingMetaspaceLiveSetRule implements IRule {
  64 
  65         private static final String RESULT_ID = "IncreasingMetaSpaceLiveSet"; //$NON-NLS-1$
  66 
  67         private Result getResult(IItemCollection items, IPreferenceValueProvider valueProvider) {
  68                 EventAvailability eventAvailability = RulesToolkit.getEventAvailability(items, JdkTypeIDs.METASPACE_SUMMARY);
  69                 if (eventAvailability == EventAvailability.UNAVAILABLE || eventAvailability == EventAvailability.DISABLED) {
  70                         return RulesToolkit.getEventAvailabilityResult(this, items, eventAvailability,
  71                                         JdkTypeIDs.METASPACE_SUMMARY);
  72                 }
  73 
  74                 IItemFilter afterFilter = ItemFilters.and(JdkFilters.METASPACE_SUMMARY_AFTER_GC, JdkFilters.AFTER_GC);
  75                 Iterator<? extends IItemIterable> allAfterItems = items.apply(afterFilter).iterator();
  76                 if (allAfterItems.hasNext()) {
  77                         IItemIterable afterItems = allAfterItems.next();
  78                         // FIXME: Handle multiple IItemIterable
  79                         IMemberAccessor<IQuantity, IItem> timeAccessor = JfrAttributes.END_TIME.getAccessor(afterItems.getType());
  80                         IMemberAccessor<IQuantity, IItem> memAccessor = JdkAttributes.GC_METASPACE_USED
  81                                         .getAccessor(afterItems.getType());
  82                         double leastSquare = RulesToolkit.leastSquareMemory(afterItems.iterator(), timeAccessor, memAccessor);
  83                         // FIXME: Configuration attribute
  84                         double score = RulesToolkit.mapExp100(leastSquare, 0.75);
  85                         // FIXME: Should construct a message using leastSquare, not use a hard limit
  86                         if (score >= 25) {
  87                                 String shortMessage = Messages.getString(Messages.IncreasingMetaspaceLiveSetRuleFactory_TEXT_INFO);
  88                                 String longMessage = shortMessage + " " //$NON-NLS-1$
  89                                                 + Messages.getString(Messages.IncreasingMetaspaceLiveSetRuleFactory_TEXT_INFO_LONG);




  49 import org.openjdk.jmc.common.util.IPreferenceValueProvider;
  50 import org.openjdk.jmc.common.util.TypedPreference;
  51 import org.openjdk.jmc.flightrecorder.JfrAttributes;
  52 import org.openjdk.jmc.flightrecorder.jdk.JdkAttributes;
  53 import org.openjdk.jmc.flightrecorder.jdk.JdkFilters;
  54 import org.openjdk.jmc.flightrecorder.jdk.JdkQueries;
  55 import org.openjdk.jmc.flightrecorder.jdk.JdkTypeIDs;
  56 import org.openjdk.jmc.flightrecorder.rules.IRule;
  57 import org.openjdk.jmc.flightrecorder.rules.Result;
  58 import org.openjdk.jmc.flightrecorder.rules.jdk.messages.internal.Messages;
  59 import org.openjdk.jmc.flightrecorder.rules.util.JfrRuleTopics;
  60 import org.openjdk.jmc.flightrecorder.rules.util.RulesToolkit;
  61 import org.openjdk.jmc.flightrecorder.rules.util.RulesToolkit.EventAvailability;
  62 
  63 public class IncreasingMetaspaceLiveSetRule implements IRule {
  64 
  65         private static final String RESULT_ID = "IncreasingMetaSpaceLiveSet"; //$NON-NLS-1$
  66 
  67         private Result getResult(IItemCollection items, IPreferenceValueProvider valueProvider) {
  68                 EventAvailability eventAvailability = RulesToolkit.getEventAvailability(items, JdkTypeIDs.METASPACE_SUMMARY);
  69                 if (eventAvailability == EventAvailability.UNKNOWN || eventAvailability == EventAvailability.DISABLED) {
  70                         return RulesToolkit.getEventAvailabilityResult(this, items, eventAvailability,
  71                                         JdkTypeIDs.METASPACE_SUMMARY);
  72                 }
  73 
  74                 IItemFilter afterFilter = ItemFilters.and(JdkFilters.METASPACE_SUMMARY_AFTER_GC, JdkFilters.AFTER_GC);
  75                 Iterator<? extends IItemIterable> allAfterItems = items.apply(afterFilter).iterator();
  76                 if (allAfterItems.hasNext()) {
  77                         IItemIterable afterItems = allAfterItems.next();
  78                         // FIXME: Handle multiple IItemIterable
  79                         IMemberAccessor<IQuantity, IItem> timeAccessor = JfrAttributes.END_TIME.getAccessor(afterItems.getType());
  80                         IMemberAccessor<IQuantity, IItem> memAccessor = JdkAttributes.GC_METASPACE_USED
  81                                         .getAccessor(afterItems.getType());
  82                         double leastSquare = RulesToolkit.leastSquareMemory(afterItems.iterator(), timeAccessor, memAccessor);
  83                         // FIXME: Configuration attribute
  84                         double score = RulesToolkit.mapExp100(leastSquare, 0.75);
  85                         // FIXME: Should construct a message using leastSquare, not use a hard limit
  86                         if (score >= 25) {
  87                                 String shortMessage = Messages.getString(Messages.IncreasingMetaspaceLiveSetRuleFactory_TEXT_INFO);
  88                                 String longMessage = shortMessage + " " //$NON-NLS-1$
  89                                                 + Messages.getString(Messages.IncreasingMetaspaceLiveSetRuleFactory_TEXT_INFO_LONG);


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