Confluence performance can degrade when JIRA/Bamboo has performance problems due to gadget feed retrieval

"http-nio-8090-exec-232" #424 daemon prio=5 os_prio=0 tid=0x00007f4aac0d0000 nid=0xca62 waiting on condition [0x00007f47c49c4000]
   java.lang.Thread.State: WAITING (parking)
	at sun.misc.Unsafe.park(Native Method)
	- parking to wait for  <0x00000003cd4014d0> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
	at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
	at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
	at org.codehaus.httpcache4j.cache.Mutex.acquire(Mutex.java:45)
	at org.codehaus.httpcache4j.cache.HTTPCache.doCachedRequest(HTTPCache.java:103)
	at org.codehaus.httpcache4j.cache.HTTPCache.doCachedRequest(HTTPCache.java:80)
	at com.atlassian.gadgets.directory.internal.impl.GadgetFeedReaderImpl.<init>(GadgetFeedReaderImpl.java:46)
	at com.atlassian.gadgets.directory.internal.impl.GadgetFeedReaderFactoryImpl.getFeedReader(GadgetFeedReaderFactoryImpl.java:28)
	at sun.reflect.GeneratedMethodAccessor3143.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)
	at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.doInvoke(ServiceInvoker.java:58)
	at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.invoke(ServiceInvoker.java:62)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
	at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)
	at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
	at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invokeUnprivileged(ServiceTCCLInterceptor.java:56)
	at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invoke(ServiceTCCLInterceptor.java:39)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
	at org.springframework.osgi.service.importer.support.LocalBundleContextAdvice.invoke(LocalBundleContextAdvice.java:59)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
	at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)
	at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
	at com.sun.proxy.$Proxy2822.getFeedReader(Unknown Source)
	at com.atlassian.confluence.plugins.gadgets.metadata.GadgetsMacroMetadataProvider.getUrisFromFeedStore(GadgetsMacroMetadataProvider.java:240)
	at com.atlassian.confluence.plugins.gadgets.metadata.GadgetsMacroMetadataProvider.getGadgetUris(GadgetsMacroMetadataProvider.java:225)
	at com.atlassian.confluence.plugins.gadgets.metadata.CachingGadgetsMacroMetadataProvider.getGadgetUris(CachingGadgetsMacroMetadataProvider.java:181)
	at com.atlassian.confluence.plugins.gadgets.metadata.CachingGadgetsMacroMetadataProvider.getData(CachingGadgetsMacroMetadataProvider.java:116)
	at com.atlassian.confluence.plugins.gadgets.metadata.CachingGadgetsMacroMetadataProvider.getSummaries(CachingGadgetsMacroMetadataProvider.java:157)
	at com.atlassian.confluence.macro.browser.DefaultMacroMetadataManager.buildMacroSummaries(DefaultMacroMetadataManager.java:123)
	at com.atlassian.confluence.macro.browser.DefaultMacroMetadataManager.getAllMacroSummaries(DefaultMacroMetadataManager.java:42)
	at com.atlassian.confluence.macro.browser.DefaultMacroBrowserManager.getMacroSummaries(DefaultMacroBrowserManager.java:66)
	at com.atlassian.confluence.macro.browser.actions.BrowseMacrosAction.getSummaries(BrowseMacrosAction.java:58)
	at com.atlassian.confluence.macro.browser.actions.BrowseMacrosAction.execute(BrowseMacrosAction.java:36)
	at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:168)
	at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:35)
	at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
	at com.atlassian.confluence.core.ConfluenceWorkflowInterceptor.intercept(ConfluenceWorkflowInterceptor.java:65)
...
	at com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1040)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1721)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1679)
	- locked <0x000000048d4da578> (a org.apache.tomcat.util.net.NioChannel)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)

2017-08-14 11:45:46,664 ERROR [http-nio-8887-exec-6] [[Standalone].[localhost].[/].[servlet-module-container-servlet]] log Servlet.service() for servlet [servlet-module-container-servlet] in context with path [] threw exception
java.lang.RuntimeException: java.util.concurrent.TimeoutException

2017-08-14 11:55:32,685 WARN [http-nio-8887-exec-10] [confluence.util.profiling.DefaultActivityMonitor] close Exceeded the threshold of 60000 ms: ActivitySnapshot{startTime=1502682314843, threadId=146, threadName='http-nio-8887-exec-10', userId='<unknown>', type='web-request', summary='/plugins/macrobrowser/browse-macros.action?detailed=false&macroMetadataClientCacheKey=1502682297826'}
 -- referer: https://confluence.mycompany.com/display/SK/This+is+a+page | url: /plugins/macrobrowser/browse-macros.action | traceId: 8bfdb50a52b72392 | userName: userXYZ