VS2017 saturday - Historical debugging with intelli trace in visual studio

saturday 2017

HISTORICAL DEBUGGINGWITHINTELLITRACE INVISUALSTUDIO MircoVanini

AGENDA

Debuggingwithandwithout IntelliTrace

What is IntelliTrace ?(andwhat it candoforyou)

Why debug withIntelliTrace?

DebuggingwithIntelliTracedeepdive

BEMOREPRODUCTIVE DURINGYOUR DAILY DEBUGGINGYouareaskedtofixabug:

- forapartoftheappyoudidn’twrite- ORthattakesalotofsteps/timetoreproduce- ORafterjoininganewteamorproject- ORforanapplicationyouwroteawhileago- ORthatisnoteasytoreproduceonadevmachine- ORthatyoudon’tknowexactlyhowtoreproduce

ORyousimplynoticeunexpectedbehavior

DEBUGGINGWITHANDWITHOUT INTELLITRACE DEMO

WHAT IS INTELLITRACE ?

IntelliTraceisaVisualStudioUltimatefeaturethatimprovesdeveloperproductivityduringdebugging

“HistoricalDebugging”

Trackseventsandmethodcallinformationatruntime

Recordsstacktrace,localvariables,andcustominformationforeachevent

VS2017SUPPORTS

WHAT CANINTELLITRACE DO?

Applicationisrunning

Debuggingstarted

FileAccess:Readingconfig files

Gesture:Button“Open”clicked

ADO.NET:“SELECT*FROMCustomer”was

executed

Exception:Exception“ArgumentNullException”

wasthrown

HOWINTELLITRACE SAVES MEDEBUGGING TIME

Typically,withoutIntelliTrace:­ Firstthoughtis“wheretoplaceabreakpoint?”­ Repeattestingstepswitheveryfailedattempt­ Keepsettingbreakpointstofindrootcause

WithIntelliTrace:­ Firstthoughtis“whathasIntelliTracecollected?”­ Identifyrootcauseimmediatelyoratleasteliminatepotentialscenarios

­ Overalllesstimespentinvestigating

WHATAPPSCANIDEBUGWITHINTELLITRACE?SupportedVisualBasicandVisualC#applicationsthatuse.NETFramework2.0orhigherversions.Youcandebugmostapplications,includingASP.NET,MicrosoftAzure,WindowsForms,WCF,WPF,WindowsWorkflow,SharePoint2010,SharePoint2013,and64-bitapps

LimitedsupportF#appsonanexperimentalbasis;WindowsStoreappssupportedforeventsonly,callinformationisnotcurrentlyavailablefor.NETCoreapps

NotsupportedC/C++,scriptlanguages;WindowsServices,Silverlight,Xbox,orWindowsMobileapps.

INTELLITRACE EXPERIENCES

Traditionalor live debuggingshowsonlyyourapplication'scurrentstate,withlimiteddataaboutpastevents

IntelliTraceexpandsthistraditionaldebuggingexperiencebyrecordingspecificeventsanddataatthesepointsintime

F5DebuggingLivedebuggingfromVisualStudio,unittests,andotherdeveloperexperiences

ProductionDebuggingCollectiononproductionsystemsforlateranalysisonadevelopmentmachine

COLLECTIONMODES

Lowimpact(eventsonly)InterestingruntimeeventsarecollectedLowoverheadifcollectinglow-frequencyevents

Highimpact(eventsandcallinformation)

EverymethodcalliscollectedUpto10xpotentialslowdownConfigureforspecificmodulesonlytoreduceimpact

ADVANCED

StoreIntelliTracerecordingLimitthesizeNavigationgutter

TFSSymbollookup

EVENTS

WCF,ADO.NET,fileaccess,registryaccess,ASP.NET,andmyriadsofotherevents

Cancustomizewithyourownevents

MODULES

BydefaultIntelliTracerecordsinformationforallthemodulesusedbyyoursolution

YoucanspecifythemodulestoincludeorthemodulestoexcludefromIntelliTrace

WHAT EXACTLY IS COLLECTED?

ParametersReturnvaluesReferencetypelocalsForeachreferencedobject,whetherornotitwasthere,butnotitscontents

void ReadTweets(string account){

var tweets = GetTweets(account);int count = 3;for (int i = 0; i < count; ++i)

DisplayTweet(tweets[i]);}

EVENTSTIMELINE

BreakEventstrack: Thistrackshowseventsthatstoppedtheexecutionoftheapplication,suchasbreakpointsbeinghit,steps,the“BreakAll”pausebuttonatthetopbeingclicked, Debugger.Break()codestatements andbreakingexceptions

IntelliTraceEventstrack: ThistrackshowsalltheothereventscollectedbyIntelliTracethatarenotbreakevents,suchasSQLqueriesbeingexecution,programoutput,ASP.NETwebrequests,fileaccess,registryaccess,gestures,andsoon

EVENTSDETAILS

Event: TheshortdescriptionoftheeventthathasbeencollectedTime: Thenumberofsecondsofapplicationruntimethathadelapsedwhentheeventwascollected.Duration: Thedurationoftheevent,inmillisecondsThread: ThenameorIDofthethreadthatwasresponsibleforgeneratingtheevent

DEBUGGINGWITHINTELLITRACEDEEPDIVE DEMO

WRAP-UPThingswecovered:

Newuserexperience(DiagnosticTools)

Improveddebuggingworkflow

Reducedbuginvestigationtime

Abilitytodetectunexpectedbehavior

Otherthingsyoucouldexplore:

IntelliTraceStandaloneCollector

IntegrationwithMicrosoftTestManager

IntegrationwithMicrosoftMonitoringAgent

WHO IAMMircoVaniniMicrosoft®MVPWindowsDevelopmentAllSeen Alliance- AllJoyn®AmbassadorOpenConnectivityFoundation- OCF®Ambassador

www.adamfactory.com

mirco.vanini@adamfactory.com

@MircoVanini

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