• Forums
    • Public Forums
      • Community Connect
      • Dynatrace
        • Dynatrace Open Q&A
      • Application Monitoring & UEM
        • AppMon & UEM Open Q&A
      • Network Application Monitoring
        • NAM Open Q&A
  • Home /
  • Public Forums /
  • Application Monitoring & UEM /
  • AppMon & UEM Open Q&A /
avatar image
Question by Jalpesh S. · Feb 13, 2015 at 05:14 PM ·

warning : BUFFER UNDERFLOW in server logs

Hi Team ,

 

We have observed that there are too many "BUFFER UNDERFLOW" warnings.

Below are warnings which are flooded in Server logs :

2015-02-13 10:57:01 WARNING [MultiStoredPurePathSessionPullreader] Unable to find meta data of related PurePath PathIdentifier (AgentId=c92fabe7, TagId=139818311, FileSession=Prod_Internet_Banking_Retail/20150213104945_0.t1.session, FilePosition=61710). This can happen when a PurePath is removed from memory immediately after it has been stored. Suppressing this warning for another 60000 ms.: com.dynatrace.diagnostics.util.LogUtil logThrottledErrorMessage:73
com.dynatrace.diagnostics.core.datacenter.serapi.SerializationException: BUFFER UNDERFLOW reading file F:\sessions\stored\Prod_Internet_Banking_Retail\20150213104945_0.t1.session\metaPathIndex.dtsf: offset=3455704, availBytes=3440248
at com.dynatrace.diagnostics.core.datacenter.filestore.basic.PoolFileReader.resolve(SourceFile:526)
at com.dynatrace.diagnostics.core.datacenter.filestore.basic.FixedSizePoolFileReader.resolve(SourceFile:114)
at com.dynatrace.diagnostics.core.datacenter.filestore.basic.FixedSizePoolFileReader.resolve(SourceFile:23)
at com.dynatrace.diagnostics.core.datacenter.filestore.basic.PoolFileReader.resolve(SourceFile:407)
at com.dynatrace.diagnostics.core.datacenter.filestore.session.SessionFileReader.a(SourceFile:1342)
at com.dynatrace.diagnostics.core.datacenter.filestore.session.SessionFileReader.findExecPathMetaInfo(SourceFile:3358)
at com.dynatrace.diagnostics.server.datacenter.shared.multisession.ExtendedApplicationSessionPullReader.findRelatedPurePathMetadata(SourceFile:194)
at com.dynatrace.diagnostics.server.datacenter.shared.multisession.MultiStoredPurePathSessionPullreader.readDownlinkBusinessTransactionData(SourceFile:833)
at com.dynatrace.diagnostics.server.shared.sdk.analytics.TransactionMetaInfoFilterCriterion.a(SourceFile:127)
at com.dynatrace.diagnostics.server.shared.sdk.analytics.TransactionMetaInfoFilterCriterion.matches(SourceFile:173)
at com.dynatrace.diagnostics.server.shared.ExecPathSelector.criteriaMatch(SourceFile:790)
at com.dynatrace.diagnostics.core.datacenter.ExecPathReader.appendPaths(SourceFile:190)
at com.dynatrace.diagnostics.core.datacenter.ExecPathReader.<init>(SourceFile:85)
at com.dynatrace.diagnostics.server.datacenter.r.a(SourceFile:873)
at com.dynatrace.diagnostics.server.datacenter.g.getExecPathReader(SourceFile:1971)
at com.dynatrace.diagnostics.server.datacenter.shared.SessionBasedSessionPullReader._nextEvent(SourceFile:235)
at com.dynatrace.diagnostics.core.datacenter.access.AbstractFilteringSessionPull.nextEvent(SourceFile:99)
at com.dynatrace.diagnostics.server.datacenter.shared.multisession.MultiStoredPurePathSessionPullreader.b(SourceFile:920)
at com.dynatrace.diagnostics.server.datacenter.shared.multisession.MultiStoredPurePathSessionPullreader.nextEvent(SourceFile:907)
at com.dynatrace.diagnostics.core.analytics.executor.PurePathBasedAnalyzerExecutor.analyze(SourceFile:297)
at com.dynatrace.diagnostics.core.analytics.abstractanalyzer.AbstractAnalyzerExecutor.doAnalyzerRun(SourceFile:75)
at com.dynatrace.diagnostics.server.shared.sdk.analytics.AnalyzerTaskHandler.doAnalyzerWork(SourceFile:500)
at com.dynatrace.diagnostics.server.shared.sdk.analytics.AnalyzerTaskHandler$AnalyzerJob.run(SourceFile:398)
at com.dynatrace.diagnostics.server.datacenter.shared.multisession.MultiStoredPurePathSession.executeSessionJob(SourceFile:78)
at com.dynatrace.diagnostics.server.datacenter.aa.executeSessionJob(SourceFile:313)
at com.dynatrace.diagnostics.server.shared.sdk.analytics.AnalyzerTaskHandler.a(SourceFile:300)
at com.dynatrace.diagnostics.server.shared.sdk.analytics.AnalyzerTaskHandler.runAnalyzer(SourceFile:146)
at com.dynatrace.diagnostics.server.shared.sdk.dashboard.analytics.AnalyticsPortletRequestResponseHandler.runAnalyzer(SourceFile:122)
at com.dynatrace.diagnostics.server.shared.sdk.dashboard.analytics.AnalyticsPortletRequestResponseHandler.handlePortletRequest(SourceFile:70)
at com.dynatrace.diagnostics.server.dashboard.BasePortletRequestExecutor.execute(SourceFile:65)
at com.dynatrace.diagnostics.server.dashboard.DashboardManager.a(SourceFile:334)
at com.dynatrace.diagnostics.server.dashboard.DashboardManager.handleDashboardRequestEvent(SourceFile:187)
at com.dynatrace.diagnostics.sdk.dashboard.AbstractDashboardManager.a(SourceFile:184)
at com.dynatrace.diagnostics.sdk.dashboard.AbstractDashboardManager.postEvents(SourceFile:140)
at com.dynatrace.diagnostics.sdk.dashboard.AbstractDashboardManager.postEvent(SourceFile:131)
at com.dynatrace.diagnostics.sdk.dashboard.AbstractDashboardManager.postEvent(SourceFile:27)
at com.dynatrace.diagnostics.sdk.dashboard.internal.Dashboard.postEvents(SourceFile:698)
at com.dynatrace.diagnostics.sdk.dashboard.internal.Dashboard.refreshData(SourceFile:680)
at com.dynatrace.diagnostics.sdk.dashboard.internal.Dashboard.refreshData(SourceFile:644)
at com.dynatrace.diagnostics.sdk.dashboard.AbstractDashboardManager.refreshActiveDashboardData(SourceFile:93)
at com.dynatrace.diagnostics.server.dashboard.DashboardReporter.a(SourceFile:508)
at com.dynatrace.diagnostics.server.dashboard.DashboardReporter.createDashboardReport(SourceFile:270)
at com.dynatrace.diagnostics.server.ServerAccessController.createDashboardReport(SourceFile:1727)
at com.dynatrace.diagnostics.server.interfaces.IntegrableServer.createDashboardReport(SourceFile:426)
at com.dynatrace.diagnostics.server.taskpacks.reporting.ReportingTask.produce(SourceFile:116)
at com.dynatrace.diagnostics.server.taskpacks.reporting.ReportingTask.produce(SourceFile:57)
at com.dynatrace.diagnostics.sdk.scheduling.Producer.execute(SourceFile:30)
at com.dynatrace.diagnostics.sdk.scheduling.Producer.execute(SourceFile:13)
at com.dynatrace.diagnostics.scheduling.impl.ServerJobCenterRegistry.a(SourceFile:189)
at com.dynatrace.diagnostics.scheduling.impl.ServerJobCenterRegistry.a(SourceFile:412)
at com.dynatrace.diagnostics.scheduling.impl.ServerJobCenterRegistry.execute(SourceFile:336)
at com.dynatrace.diagnostics.scheduling.impl.SchedulerJob.a(SourceFile:101)
at com.dynatrace.diagnostics.scheduling.impl.SchedulerJob.work(SourceFile:92)
at com.dynatrace.diagnostics.scheduling.impl.SchedulerJob.executeJobInfo(SourceFile:241)
at com.dynatrace.diagnostics.scheduling.impl.QuartzJob.execute(SourceFile:45)
at org.quartz.core.JobRunShell.run(JobRunShell.java:202)
at com.dynatrace.diagnostics.scheduling.impl.QuartzThreadPool$WorkerThread.run(SourceFile:788)
Caused by: java.nio.BufferUnderflowException
at java.nio.Buffer.nextGetIndex(Buffer.java:498)
at java.nio.HeapByteBuffer.getInt(HeapByteBuffer.java:355)
at com.dynatrace.diagnostics.core.datacenter.filestore.buffers.ReadableBuffer.getInt(SourceFile:75)
at com.dynatrace.diagnostics.core.datacenter.filestore.metaindex.PathMetaIndexPoolFileEntry2.e(SourceFile:141)
at com.dynatrace.diagnostics.core.datacenter.filestore.metaindex.PathMetaIndexPoolFileEntry2.deserialize(SourceFile:56)
at com.dynatrace.diagnostics.core.datacenter.filestore.metaindex.PathMetaIndexPoolFileEntry2.deserialize(SourceFile:17)
at com.dynatrace.diagnostics.core.datacenter.filestore.basic.PoolFileReader.resolve(SourceFile:524)
... 56 more

 

Please suggest why this is happening.

 

Regards,

Jalpesh Shelar

 

 

Comment

People who like this

0 Show 0
10 |2000000 characters needed characters left characters exceeded
  • Viewable by all users
  • Viewable by moderators
  • Viewable by moderators and the original poster
  • Advanced visibility
Toggle Comment visibility. Current Visibility: Viewable by all users

Up to 10 attachments (including images) can be used with a maximum of 50.0 MiB each and 250.0 MiB total.

5 Replies

  • Sort: 
  • Most voted
  • Newest
  • Oldest
avatar image

Answer by Ozkan A. · May 05, 2015 at 07:36 PM

Hi Kristof,

Thanks for your inf.

Regards,

Ozkan...

Comment

People who like this

0 Show 0 · Share
10 |2000000 characters needed characters left characters exceeded
  • Viewable by all users
  • Viewable by moderators
  • Viewable by moderators and the original poster
  • Advanced visibility
Toggle Comment visibility. Current Visibility: Viewable by all users

Up to 10 attachments (including images) can be used with a maximum of 50.0 MiB each and 250.0 MiB total.

avatar image

Answer by Kristof R. · May 05, 2015 at 07:21 PM

Ho Ozkan,

It might be that build 7975 was specifically for Jalpesh and the change has not made it in the public fixpack. Best is to create a ticket and reference this post.

KR,
Kristof 

Comment

People who like this

0 Show 0 · Share
10 |2000000 characters needed characters left characters exceeded
  • Viewable by all users
  • Viewable by moderators
  • Viewable by moderators and the original poster
  • Advanced visibility
Toggle Comment visibility. Current Visibility: Viewable by all users

Up to 10 attachments (including images) can be used with a maximum of 50.0 MiB each and 250.0 MiB total.

avatar image

Answer by Ozkan A. · May 05, 2015 at 06:34 PM

Hi,

I am using 6.1.0.8105 but still have this messeage. Do you have any idea?

REgards,

Ozkan.

Comment

People who like this

0 Show 0 · Share
10 |2000000 characters needed characters left characters exceeded
  • Viewable by all users
  • Viewable by moderators
  • Viewable by moderators and the original poster
  • Advanced visibility
Toggle Comment visibility. Current Visibility: Viewable by all users

Up to 10 attachments (including images) can be used with a maximum of 50.0 MiB each and 250.0 MiB total.

avatar image

Answer by Jalpesh S. · Mar 16, 2015 at 09:08 PM

Hi Andi,

 

Support have provided  FixPack 6.1.0.7975  for this and issue got resolved.

 

Regards,

Jalpesh Shelar

Comment

People who like this

0 Show 1 · Share
10 |2000000 characters needed characters left characters exceeded
  • Viewable by all users
  • Viewable by moderators
  • Viewable by moderators and the original poster
  • Advanced visibility
Toggle Comment visibility. Current Visibility: Viewable by all users

Up to 10 attachments (including images) can be used with a maximum of 50.0 MiB each and 250.0 MiB total.

avatar image Andreas G. ♦ · Mar 16, 2015 at 09:14 PM 0
Share

Thanks for sharing!!

avatar image

Answer by Andreas G. · Feb 14, 2015 at 02:21 AM

Please open a support ticket for this and keep us posted with the outcome

Comment

People who like this

0 Show 0 · Share
10 |2000000 characters needed characters left characters exceeded
  • Viewable by all users
  • Viewable by moderators
  • Viewable by moderators and the original poster
  • Advanced visibility
Toggle Comment visibility. Current Visibility: Viewable by all users

Up to 10 attachments (including images) can be used with a maximum of 50.0 MiB each and 250.0 MiB total.

How to get started

First steps in the forum
Read Community User Guide
Best practices of using forum

NAM 2019 SP5 is available


Check the RHEL support added in the latest NAM service pack.

Learn more

LIVE WEBINAR

"Performance Clinic - Monitoring as a Self Service with Dynatrace"


JANUARY 15, 3:00 PM GMT / 10:00 AM ET

Register here

Follow this Question

Answers Answers and Comments

3 People are following this question.

avatar image avatar image avatar image

Forum Tags

dotnet mobile monitoring load iis 6.5 kubernetes mainframe rest api dashboard framework 7.0 appmon 7 health monitoring adk log monitoring services auto-detection uem webserver test automation license web performance monitoring ios nam probe collector migration mq web services knowledge sharing reports window java hybris javascript appmon sensors good to know extensions search 6.3+ server documentation easytravel web dashboard kibana system profile purelytics docker splunk 6.1 process groups account 7.2 rest dynatrace saas spa guardian appmon administration production user actions postgresql upgrade oneagent measures security Dynatrace Managed transactionflow technologies diagnostics user session monitoring unique users continuous delivery sharing configuration alerting NGINX splitting business transaction client 6.3 installation database scheduler apache mobileapp RUM php dashlet azure purepath agent 7.1 appmonsaas messagebroker nodejs 6.2 android sensor performance warehouse
  • Forums
  • Public Forums
    • Community Connect
    • Dynatrace
      • Dynatrace Open Q&A
    • Application Monitoring & UEM
      • AppMon & UEM Open Q&A
    • Network Application Monitoring
      • NAM Open Q&A