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Efficient or Just Busy?
 

Efficient or Just Busy?

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    Efficient or Just Busy? Efficient or Just Busy? Presentation Transcript

    • Efficient or Just Busy?Pawel Brodzinski@pawelbrodzinski
    • Hi, I’m PawelLunar Logichttp://llp.plSoftware ProjectManagementhttp://brodzinski.comTwitter@pawelbrodzinski
    • Once upona time…
    • Why?
    • 100% utilization
    • Cost of multitaskingSource: Gerald Weinberg, Quality Software Management:Vol. 1 System Thinking
    • Zeigarnik Effect:Tendency to experienceintrusive thought aboutan objective leftincompleteSource: S. Greist-Bousquet, N. Shiffman: The effect of taskinterrupton and closure on perceived duration
    • Cost of taskswitching is rootedin interference fromthoughts about the taskyour are not doingEyal Ophir
    • Time to market
    • Catching upUM… HOW DOES THISDARN CODE WORK,AGAIN?
    • MoremistakesSource: E. Ophir, C. Nass, A. Wagner:Cognitive control in media multitaskers
    • On a highway
    • In a call center
    • BallFlowGame
    • No WIP Limits
    • Using WIP Limits
    • Total time: 25% betterAverage cycle time: 60% betterPredictability*: 90% better*Standard deviation
    • Not the whole truth
    • Cuttingcorners
    • Not sustainable
    • Why something that intuitiveseems so counterintuitivewhen we talk aboutmanagement?
    • …and they livedhappily everafter
    • 5OWIP limits!
    • Average cycle time: 50% betterPessimistic scenario: 53% betterPredictability*: 65% better*80th percentile
    • Why?
    • Slack time
    • Automation
    • Code quality
    • Simpleconfiguration
    • Self-balancingteam
    • Slack time introduced byWIP limits drives continuousimprovement
    • When introducingWIP limits start with2x average WIPDon Reinertsen
    • Cost of rejected work: 1% worseCost of idle capacity: 1% worseAverage cycle time: 28% betterSource: Don Reinertsen, #lkce12 keynoteWIP Limit = 2x Average WIP
    • Cost of rejected work: 13% worseCost of idle capacity: 11% worseAverage cycle time: 72% betterSource: Don Reinertsen, #lkce12 keynoteWIP Limit = 0.5x Average WIP
    • Are aggressiveWIP limitsuseful?2O
    • What’s the useof slack time?
    • Idletimeonly?
    • Helpingothers
    • Learning
    • Systemimprovements!
    • Cost of rejected workWhat’s the value of rejectedwork?
    • More than a halfthe features in largesoftware products gounusedSource: Victor R. Basili, Barry Boehm, COTS-Based Systems Top 10 List
    • Cost of idle capacityIs that capacity really wasted?
    • Employees possessthe ability for creativeproblem solving, but theirtalents are underused inmost organizationsSource: Douglas McGregor, Theory Y
    • Average cycle timeWhat happens to cycle timethanks to improvements?
    • COSTOFDELAYLONG-TERMVALUE
    • COSTOFDELAYProject andproductworkLONG-TERMVALUE
    • COSTOFDELAYProject andproductworkSystemimprovementsLONG-TERMVALUE
    • COSTOFDELAYProject andproductworkSystemimprovementsLONG-TERMVALUE
    • Takeouts
    • 100% utilization is a myth1OO%
    • Introducing WIP limits resultsin improved efficiency
    • Slack time sets us on path ofcontinuous improvement
    • Efficient doesn’t mean busyBusy doesn’t mean efficient
    • Thank youPawel Brodzinskiblog.brodzinski.comllp.pl@pawelbrodzinski