Queuing Theory and the Theory of Constraints are two powerful theories that can increase your velocity. This session explains both theories in simple terms then covers how they can be applied in the real world by agile teams. 21 simple velocity increasing experiments are described that you can immediately use.
The effects of Queuing Theory impact our lives on a daily basis. Scrum uses Queuing Theory at its core and you can amplify those effects.
The Theory of Constraints can identify the one constraint that is preventing your team from increasing its velocity. It also shows us how to remove that constraint in the cheapest way possible.
Presented at Scrum Australia (@auscrum), Melbourne, 29 April 2016
Theory Of Constraints - Agile Tour 2013 Craig Strong & Daryn Holmesstrongandagile.co.uk
These slides are from the presentation at http://www.agiletourlondon.co.uk 1/11/2013. They are based on simulated results using a basic Kanban workflow. The goal of the presentation was to explain the Theory Of Constraints by example and show how this can be applied to make effective changes and
to provoke thinking about the wider system we work within
Pushing the Bottleneck: Predicting and Addressing the Next, Next ThingIBM UrbanCode Products
Finding bottlenecks in our software delivery processes is often pretty easy. But once we squash one bottleneck, another team becomes the limiting factor. This presentation looks how bottlenecks work, and how to predict the next bottleneck you'll need to work on.
Test Improvement - Any place, anytime, any whereRuud Teunissen
Test Improvement is all about giving an organization or a team the “means they can use” to help achieve their goals. Means that are in line with their skills and they can use in their context. That’s why successful Test Improvement requires leadership and management. In this presentation I share experiences in Test Improvement in a wide variety of environments, using different models and approaches.
Kanban provides an evolutionary approach to continuous improvement. This slide set, explains what Kanban is and how it can help you to improve step by step.
LKNL12: Kanban for the whole value streamVasco Duarte
You’ve been there before. You know better, you have a good idea to support your agile transition. Work starts, things work well at first, but then you bump against organizational barriers. Sales, Marketing, Support all have a different language and a different view into the value stream. How can we start an organizational change without a shared model of how the company should be organized?
Those are all symptoms of a gap in our Agile community: we lack a organizational model for company-wide Agile adoption and company-wide continuous improvement. Examples of this include: no company-wide flow-model (kanban) from idea to sales to idea and so on; we have no way to evaluate where the bottlenecks are the moment they are not in “our silo”. We lack a theoretical model for designing software organizations.
A theory is something that informs day-to-day decisions and experiments (e.g. PDCA). In this talk we will explain an
organizational design concept developed over several years, and use concrete examples to describe a model that you can use in support of - not only your agile adoption - but your company improvement process and your new organizational design.
A while ago I asked Karl Scotland, how to Sell the idea of lean to managers and recieved an unexpected answer. It now all makes sense to me and I have captured the answer in this presentation
Theory Of Constraints - Agile Tour 2013 Craig Strong & Daryn Holmesstrongandagile.co.uk
These slides are from the presentation at http://www.agiletourlondon.co.uk 1/11/2013. They are based on simulated results using a basic Kanban workflow. The goal of the presentation was to explain the Theory Of Constraints by example and show how this can be applied to make effective changes and
to provoke thinking about the wider system we work within
Pushing the Bottleneck: Predicting and Addressing the Next, Next ThingIBM UrbanCode Products
Finding bottlenecks in our software delivery processes is often pretty easy. But once we squash one bottleneck, another team becomes the limiting factor. This presentation looks how bottlenecks work, and how to predict the next bottleneck you'll need to work on.
Test Improvement - Any place, anytime, any whereRuud Teunissen
Test Improvement is all about giving an organization or a team the “means they can use” to help achieve their goals. Means that are in line with their skills and they can use in their context. That’s why successful Test Improvement requires leadership and management. In this presentation I share experiences in Test Improvement in a wide variety of environments, using different models and approaches.
Kanban provides an evolutionary approach to continuous improvement. This slide set, explains what Kanban is and how it can help you to improve step by step.
LKNL12: Kanban for the whole value streamVasco Duarte
You’ve been there before. You know better, you have a good idea to support your agile transition. Work starts, things work well at first, but then you bump against organizational barriers. Sales, Marketing, Support all have a different language and a different view into the value stream. How can we start an organizational change without a shared model of how the company should be organized?
Those are all symptoms of a gap in our Agile community: we lack a organizational model for company-wide Agile adoption and company-wide continuous improvement. Examples of this include: no company-wide flow-model (kanban) from idea to sales to idea and so on; we have no way to evaluate where the bottlenecks are the moment they are not in “our silo”. We lack a theoretical model for designing software organizations.
A theory is something that informs day-to-day decisions and experiments (e.g. PDCA). In this talk we will explain an
organizational design concept developed over several years, and use concrete examples to describe a model that you can use in support of - not only your agile adoption - but your company improvement process and your new organizational design.
A while ago I asked Karl Scotland, how to Sell the idea of lean to managers and recieved an unexpected answer. It now all makes sense to me and I have captured the answer in this presentation
Weekend Escape an agile backlog management game, run at Agile Brisbane. Small teams collaborate to order a backlog with a specific business goal in mind. Once the team has produced their backlog, they review the output of another team and discuss the differences. Everyone participates and discussion plays a key part in the game. Participant’s eyes are often opened to the complexity of backlog prioritisation. The game has been designed for all staff, not just Product Owners.
Iteration Managers & Scrum Masters should not just be managing their team. They should be providing the team with leadership that helps them to achieve great things together.
Improving throughput with the Theory of Constraints and Queuing TheoryAndrew Rusling
Practical advice on how to improve the throughput of your agile team, by using the Theory of Constraints and Queuing Theory. Shows how to apply TOC to your task board. Explains how Queuing Theory is built into Scrum and Kanban, powering you to make the most of them.
Need to take control of a sales pitch, meeting, focus group or training session but can't call people out on their bad behaviour? Here are five fun strategies that sort out the texting, nodding off, chatting or endless questions without the stress!
Queuing Theory and the Theory of Constraints are two powerful theories that can increase your velocity. This session explains both theories in simple terms then covers how they can be applied in the real world by agile teams. 21 simple velocity increasing experiments are described that you can immediately use.
The effects of Queuing Theory impact our lives on a daily basis. Scrum uses Queuing Theory at its core and you can amplify those effects.
The Theory of Constraints can identify the one constraint that is preventing your team from increasing its velocity. It also shows us how to remove that constraint in the cheapest way possible.
Continuous Context Driven Test ImprovementTechWell
Classical test process improvement is often not today’s best solution. With virtualization, SOA, web, cloud, mobile, and integration with social media, the way we develop, test, and manage has drastically changed. Jeroen explores why Agile, context-driven testing, SCRUM, continuous integration/development and DevOps require a flexible and pragmatic context-driven approach to test improvement. Context-driven test improvement is organized on two levels. [1] The improvement architecture level starts by clarifying the goal, scope, and context. This results in the improvement approach, a mixture of fixed- and free-format models and methods. The analysis of the collected information provides improvement suggestions that help achieve the “new” approach. [2] The improvement implementation level starts with transforming and prioritizing the improvement suggestions into tasks in the improvement backlog and fitting them into business-as-usual projects. Continuous improvement requires a continuous process that includes checking improvement results against the objectives—and, of course, new insights.
A lean automation blueprint for testing in continuous deliverySauce Labs
Testing in Continuous Delivery changes test automation. It demands more automation but also requires immediate feedback. Many test teams today suffer from two extremes. Too little or no automation to organizations with hundreds of thousands of tests constantly running all kinds of VMs takes multiple days to execute. Any hope of Continuous Delivery or Pipeline Automation makes these states unsustainable.
Scaling out logistic regression with SparkBarak Gitsis
Large scale multinomial logistic regression with Spark. Contains animated gifs. Analysis of LBFGS. Real world spark configurations. SimilarWeb categorization algorithm
Системный взгляд на параллельный запуск Selenium тестовCOMAQA.BY
Параллельный запуск тестов – не просто желание, но острая необходимость, стандартная задача, с которой рано или поздно столкнется каждый проект, за исключением, разве что, совсем небольших и краткосрочных. Порой, вопрос параллелизации тестов превращается в сложный или даже почти невыполнимый. Давайте поговорим о том, как избежать подобной ситуации: какие рекомендации и инструменты существуют, какую архитектуру стоит выбрать изначально, каких решений следует избегать. Антон попробует ответить на все эти актуальные вопросы и конечно приведет множество примеров для наглядности и практического подтверждения. Мы проговорим «хорошие» варианты параллельного запуска автоматизированных тестов, но так же рассмотрим ситуацию с противоположной стороны «от противного». Проанализируем десяток «плохих» решений по параллелизации на реальных примерах – сложных, медленных, дорогих, неэффективных. Фактически, беседа будет состоять из двух частей: «что такое хорошо и что такое плохо» в примерах, с аргументацией и рекомендациями.
improving the performance of Rails web ApplicationsJohn McCaffrey
This presentation is the first in a series on Improving Rails application performance. This session covers the basic motivations and goals for improving performance, the best way to approach a performance assessment, and a review of the tools and techniques that will yield the best results. Tools covered include: Firebug, yslow, page speed, speed tracer, dom monster, request log analyzer, oink, rack bug, new relic rpm, rails metrics, showslow.org, msfast, webpagetest.org and gtmetrix.org.
The upcoming sessions will focus on:
Improving sql queries, and active record use
Improving general rails/ruby code
Improving the front-end
And a final presentation will cover how to be a more efficient and effective developer!
This series will be compressed into a best of session for the 2010 http://windycityRails.org conference
Weekend Escape an agile backlog management game, run at Agile Brisbane. Small teams collaborate to order a backlog with a specific business goal in mind. Once the team has produced their backlog, they review the output of another team and discuss the differences. Everyone participates and discussion plays a key part in the game. Participant’s eyes are often opened to the complexity of backlog prioritisation. The game has been designed for all staff, not just Product Owners.
Iteration Managers & Scrum Masters should not just be managing their team. They should be providing the team with leadership that helps them to achieve great things together.
Improving throughput with the Theory of Constraints and Queuing TheoryAndrew Rusling
Practical advice on how to improve the throughput of your agile team, by using the Theory of Constraints and Queuing Theory. Shows how to apply TOC to your task board. Explains how Queuing Theory is built into Scrum and Kanban, powering you to make the most of them.
Need to take control of a sales pitch, meeting, focus group or training session but can't call people out on their bad behaviour? Here are five fun strategies that sort out the texting, nodding off, chatting or endless questions without the stress!
Queuing Theory and the Theory of Constraints are two powerful theories that can increase your velocity. This session explains both theories in simple terms then covers how they can be applied in the real world by agile teams. 21 simple velocity increasing experiments are described that you can immediately use.
The effects of Queuing Theory impact our lives on a daily basis. Scrum uses Queuing Theory at its core and you can amplify those effects.
The Theory of Constraints can identify the one constraint that is preventing your team from increasing its velocity. It also shows us how to remove that constraint in the cheapest way possible.
Continuous Context Driven Test ImprovementTechWell
Classical test process improvement is often not today’s best solution. With virtualization, SOA, web, cloud, mobile, and integration with social media, the way we develop, test, and manage has drastically changed. Jeroen explores why Agile, context-driven testing, SCRUM, continuous integration/development and DevOps require a flexible and pragmatic context-driven approach to test improvement. Context-driven test improvement is organized on two levels. [1] The improvement architecture level starts by clarifying the goal, scope, and context. This results in the improvement approach, a mixture of fixed- and free-format models and methods. The analysis of the collected information provides improvement suggestions that help achieve the “new” approach. [2] The improvement implementation level starts with transforming and prioritizing the improvement suggestions into tasks in the improvement backlog and fitting them into business-as-usual projects. Continuous improvement requires a continuous process that includes checking improvement results against the objectives—and, of course, new insights.
A lean automation blueprint for testing in continuous deliverySauce Labs
Testing in Continuous Delivery changes test automation. It demands more automation but also requires immediate feedback. Many test teams today suffer from two extremes. Too little or no automation to organizations with hundreds of thousands of tests constantly running all kinds of VMs takes multiple days to execute. Any hope of Continuous Delivery or Pipeline Automation makes these states unsustainable.
Scaling out logistic regression with SparkBarak Gitsis
Large scale multinomial logistic regression with Spark. Contains animated gifs. Analysis of LBFGS. Real world spark configurations. SimilarWeb categorization algorithm
Системный взгляд на параллельный запуск Selenium тестовCOMAQA.BY
Параллельный запуск тестов – не просто желание, но острая необходимость, стандартная задача, с которой рано или поздно столкнется каждый проект, за исключением, разве что, совсем небольших и краткосрочных. Порой, вопрос параллелизации тестов превращается в сложный или даже почти невыполнимый. Давайте поговорим о том, как избежать подобной ситуации: какие рекомендации и инструменты существуют, какую архитектуру стоит выбрать изначально, каких решений следует избегать. Антон попробует ответить на все эти актуальные вопросы и конечно приведет множество примеров для наглядности и практического подтверждения. Мы проговорим «хорошие» варианты параллельного запуска автоматизированных тестов, но так же рассмотрим ситуацию с противоположной стороны «от противного». Проанализируем десяток «плохих» решений по параллелизации на реальных примерах – сложных, медленных, дорогих, неэффективных. Фактически, беседа будет состоять из двух частей: «что такое хорошо и что такое плохо» в примерах, с аргументацией и рекомендациями.
improving the performance of Rails web ApplicationsJohn McCaffrey
This presentation is the first in a series on Improving Rails application performance. This session covers the basic motivations and goals for improving performance, the best way to approach a performance assessment, and a review of the tools and techniques that will yield the best results. Tools covered include: Firebug, yslow, page speed, speed tracer, dom monster, request log analyzer, oink, rack bug, new relic rpm, rails metrics, showslow.org, msfast, webpagetest.org and gtmetrix.org.
The upcoming sessions will focus on:
Improving sql queries, and active record use
Improving general rails/ruby code
Improving the front-end
And a final presentation will cover how to be a more efficient and effective developer!
This series will be compressed into a best of session for the 2010 http://windycityRails.org conference
My updated slides about the journey to hell and back to normality wrt automated tests at scale. Based on real 10+ years experience of JIRA development teams.
I delivered this talk at XPDays in Kiev in October 2013.
Webinar: Estrategias para optimizar los costos de testingFederico Toledo
Webinar en colaboración de QAminds y Abstracta Tech Talks.
Abstract: En estos días de lockdown y recesión económica muchas empresas están buscando formas de recortar costos por acá y por allá, y por supuesto, el testing es de las cosas que se suele recortar primero. El problema de recortar presupuesto y recursos para testing queda reflejado en el viejo dicho "pan para hoy hambre para mañana". En esta charla quiero compartir algunas estrategias con las que puedes optimizar costos de testing sin comprometer la calidad del sistema o producto que estás desarrollando.
Similar to 21 experiments to increase velocity (20)
Large Language Models and the End of ProgrammingMatt Welsh
Talk by Matt Welsh at Craft Conference 2024 on the impact that Large Language Models will have on the future of software development. In this talk, I discuss the ways in which LLMs will impact the software industry, from replacing human software developers with AI, to replacing conventional software with models that perform reasoning, computation, and problem-solving.
OpenFOAM solver for Helmholtz equation, helmholtzFoam / helmholtzBubbleFoamtakuyayamamoto1800
In this slide, we show the simulation example and the way to compile this solver.
In this solver, the Helmholtz equation can be solved by helmholtzFoam. Also, the Helmholtz equation with uniformly dispersed bubbles can be simulated by helmholtzBubbleFoam.
top nidhi software solution freedownloadvrstrong314
This presentation emphasizes the importance of data security and legal compliance for Nidhi companies in India. It highlights how online Nidhi software solutions, like Vector Nidhi Software, offer advanced features tailored to these needs. Key aspects include encryption, access controls, and audit trails to ensure data security. The software complies with regulatory guidelines from the MCA and RBI and adheres to Nidhi Rules, 2014. With customizable, user-friendly interfaces and real-time features, these Nidhi software solutions enhance efficiency, support growth, and provide exceptional member services. The presentation concludes with contact information for further inquiries.
Top Features to Include in Your Winzo Clone App for Business Growth (4).pptxrickgrimesss22
Discover the essential features to incorporate in your Winzo clone app to boost business growth, enhance user engagement, and drive revenue. Learn how to create a compelling gaming experience that stands out in the competitive market.
How Recreation Management Software Can Streamline Your Operations.pptxwottaspaceseo
Recreation management software streamlines operations by automating key tasks such as scheduling, registration, and payment processing, reducing manual workload and errors. It provides centralized management of facilities, classes, and events, ensuring efficient resource allocation and facility usage. The software offers user-friendly online portals for easy access to bookings and program information, enhancing customer experience. Real-time reporting and data analytics deliver insights into attendance and preferences, aiding in strategic decision-making. Additionally, effective communication tools keep participants and staff informed with timely updates. Overall, recreation management software enhances efficiency, improves service delivery, and boosts customer satisfaction.
Into the Box Keynote Day 2: Unveiling amazing updates and announcements for modern CFML developers! Get ready for exciting releases and updates on Ortus tools and products. Stay tuned for cutting-edge innovations designed to boost your productivity.
Globus Compute wth IRI Workflows - GlobusWorld 2024Globus
As part of the DOE Integrated Research Infrastructure (IRI) program, NERSC at Lawrence Berkeley National Lab and ALCF at Argonne National Lab are working closely with General Atomics on accelerating the computing requirements of the DIII-D experiment. As part of the work the team is investigating ways to speedup the time to solution for many different parts of the DIII-D workflow including how they run jobs on HPC systems. One of these routes is looking at Globus Compute as a way to replace the current method for managing tasks and we describe a brief proof of concept showing how Globus Compute could help to schedule jobs and be a tool to connect compute at different facilities.
Field Employee Tracking System| MiTrack App| Best Employee Tracking Solution|...informapgpstrackings
Keep tabs on your field staff effortlessly with Informap Technology Centre LLC. Real-time tracking, task assignment, and smart features for efficient management. Request a live demo today!
For more details, visit us : https://informapuae.com/field-staff-tracking/
SOCRadar Research Team: Latest Activities of IntelBrokerSOCRadar
The European Union Agency for Law Enforcement Cooperation (Europol) has suffered an alleged data breach after a notorious threat actor claimed to have exfiltrated data from its systems. Infamous data leaker IntelBroker posted on the even more infamous BreachForums hacking forum, saying that Europol suffered a data breach this month.
The alleged breach affected Europol agencies CCSE, EC3, Europol Platform for Experts, Law Enforcement Forum, and SIRIUS. Infiltration of these entities can disrupt ongoing investigations and compromise sensitive intelligence shared among international law enforcement agencies.
However, this is neither the first nor the last activity of IntekBroker. We have compiled for you what happened in the last few days. To track such hacker activities on dark web sources like hacker forums, private Telegram channels, and other hidden platforms where cyber threats often originate, you can check SOCRadar’s Dark Web News.
Stay Informed on Threat Actors’ Activity on the Dark Web with SOCRadar!
May Marketo Masterclass, London MUG May 22 2024.pdfAdele Miller
Can't make Adobe Summit in Vegas? No sweat because the EMEA Marketo Engage Champions are coming to London to share their Summit sessions, insights and more!
This is a MUG with a twist you don't want to miss.
Cyaniclab : Software Development Agency Portfolio.pdfCyanic lab
CyanicLab, an offshore custom software development company based in Sweden,India, Finland, is your go-to partner for startup development and innovative web design solutions. Our expert team specializes in crafting cutting-edge software tailored to meet the unique needs of startups and established enterprises alike. From conceptualization to execution, we offer comprehensive services including web and mobile app development, UI/UX design, and ongoing software maintenance. Ready to elevate your business? Contact CyanicLab today and let us propel your vision to success with our top-notch IT solutions.
Developing Distributed High-performance Computing Capabilities of an Open Sci...Globus
COVID-19 had an unprecedented impact on scientific collaboration. The pandemic and its broad response from the scientific community has forged new relationships among public health practitioners, mathematical modelers, and scientific computing specialists, while revealing critical gaps in exploiting advanced computing systems to support urgent decision making. Informed by our team’s work in applying high-performance computing in support of public health decision makers during the COVID-19 pandemic, we present how Globus technologies are enabling the development of an open science platform for robust epidemic analysis, with the goal of collaborative, secure, distributed, on-demand, and fast time-to-solution analyses to support public health.
Code reviews are vital for ensuring good code quality. They serve as one of our last lines of defense against bugs and subpar code reaching production.
Yet, they often turn into annoying tasks riddled with frustration, hostility, unclear feedback and lack of standards. How can we improve this crucial process?
In this session we will cover:
- The Art of Effective Code Reviews
- Streamlining the Review Process
- Elevating Reviews with Automated Tools
By the end of this presentation, you'll have the knowledge on how to organize and improve your code review proces
Enterprise Resource Planning System includes various modules that reduce any business's workload. Additionally, it organizes the workflows, which drives towards enhancing productivity. Here are a detailed explanation of the ERP modules. Going through the points will help you understand how the software is changing the work dynamics.
To know more details here: https://blogs.nyggs.com/nyggs/enterprise-resource-planning-erp-system-modules/
Accelerate Enterprise Software Engineering with PlatformlessWSO2
Key takeaways:
Challenges of building platforms and the benefits of platformless.
Key principles of platformless, including API-first, cloud-native middleware, platform engineering, and developer experience.
How Choreo enables the platformless experience.
How key concepts like application architecture, domain-driven design, zero trust, and cell-based architecture are inherently a part of Choreo.
Demo of an end-to-end app built and deployed on Choreo.
Innovating Inference - Remote Triggering of Large Language Models on HPC Clus...Globus
Large Language Models (LLMs) are currently the center of attention in the tech world, particularly for their potential to advance research. In this presentation, we'll explore a straightforward and effective method for quickly initiating inference runs on supercomputers using the vLLM tool with Globus Compute, specifically on the Polaris system at ALCF. We'll begin by briefly discussing the popularity and applications of LLMs in various fields. Following this, we will introduce the vLLM tool, and explain how it integrates with Globus Compute to efficiently manage LLM operations on Polaris. Attendees will learn the practical aspects of setting up and remotely triggering LLMs from local machines, focusing on ease of use and efficiency. This talk is ideal for researchers and practitioners looking to leverage the power of LLMs in their work, offering a clear guide to harnessing supercomputing resources for quick and effective LLM inference.
24. Why reduce batch size?
Littles Law
Avg. Cycle Time =
Work In Progress (WIP)
Avg. Velocity
www.journey-to-better.com
Velocity
Cycle
Time
WIP
Batch
Size
25. Why reduce item size?
www.journey-to-better.com
Velocity
Queue
Size
(WIP)
Item
Size
Predictability
Bad
Variability
Cycle
Time
26. Improving freeway velocity
Image by Atlantacitizen at the English language Wikipedia, CC BY-SA 3.0,
https://commons.wikimedia.org/w/index.php?curid=1811360
27. Reducing utilisation
www.journey-to-better.com
Image by: https://www.flickr.com/photos/highwaysagency/
• Radio messages
• Signs
• Promote Car Pooling
• Promote Public Transport
• Tolls
• High Taxes and fees
• Limit access by registration
• Add more lanes
28. Reducing batch size
Image by: https://www.flickr.com/photos/29233640@N07/
www.journey-to-better.com
• Control entry points
• Stagger work times
• Multi nucleolus city
29. Reducing item size
Image by: https://www.flickr.com/photos/null0/
Replace Buses with Cars, Cars with Bikes.
www.journey-to-better.com
30. Queuing Theory
is baked into
agile & Scrum
www.journey-to-better.com
Good news!
Image by: https://www.flickr.com/photos/jeffrey
31. Queuing Theory in agile
agile lowers Utilization by
• Promoting sustainable development.
• Customer collaboration.
agile lowers Batch Size by
• Focus on early delivery of Working Software.
agile lowers Item Size by
• Focus on simplicity & business feedback.
www.journey-to-better.com
Image: http://www.agilemanifesto.org/
32. Queuing Theory in Scrum
Scrum lowers Utilization by
• Team members 100% allocated.
• Team pulls in work to sprint.
Scrum lowers Batch Size by
• Sprint length.
Scrum lowers Item Size by
• Time boxing & D.O.D.
www.journey-to-better.com
33. Utilisation experiments
• Pull in less total Story Points (-20%)
• Commit to less team hours (-20%)
• Limit # of I.P. User Stories (p/2)
• Show requesters your Scrum board
34. Batch size experiments
• Split up Releases (½)
• Split up Epics/Features (3 to 12)
• Shorten your Sprints (-1w)
35. Item Size Experiments
• Split up your User Stories (# in sprint ~= p)
• Use Spikes
• Practice Simplicity
• Split up your Tasks (max 1d)
38. r0002 | flagstaffotos.com.auCanon 20D + Canon 400mm f/5.6 L - Own
L 1.2, https://commons.wikimedia.org/w/index.php?curid=5305901
Why add just one lane?
41. Focusing our efforts
5 units
per week
2 units
per week
3 units
per week
www.journey-to-better.com
Idea
Process
A
Process
B
Process
C
Customer
• A?
• B?
• C?
• A, B & C?
• Need more info?
42. Theory of Constraints (TOC)
"a chain is no stronger than its
weakest link“
Improving strong links, does not
strengthen the chain.
To achieve more of your goal,
improve your weakest link.
www.journey-to-better.com
46. Backlog Analysis Coding Review Testing Accept Done
Populate with current state
www.journey-to-better.com
47. 1. Identify the constraint
Symptoms
• Work waiting in front of the constraint.
• Resource is heavily stressed.
• Starvation downstream.
www.journey-to-better.com
Constraint
48. Backlog Analysis Coding Review Testing Accept Done
Where is the constraint?
www.journey-to-better.com
51. Backlog Analysis Coding Review Testing Accept Done
Doing ReadyDoing ReadyDoing ReadyDoing Ready
Split all other columns
www.journey-to-better.com
52. 2. Cheap Changes
Some experiments:
• Shield them from interruptions.
• Limit their WIP.
• Reduce their non value adding work.
No overtime!
www.journey-to-better.com
54. Backlog Analysis Coding Review Testing Accept Done
Doing ReadyDoing ReadyDoing ReadyDoing Ready
(5)
Let it run
Constraint remains
www.journey-to-better.com
55. 3. Align everyone
Some experiments:
• Limit WIP of upstream to match.
• Upstream do preparation work.
• Upstream improve their quality.
• Pair upstream with constraint staff.
www.journey-to-better.com
56. Backlog Analysis Coding Review Testing Accept Done
Doing ReadyDoing ReadyDoing ReadyDoing Ready
(5)(5)(5)(5)
Align everyone
Match upstream WIP to constraint
Devs do more test prep work.
Dev-QA pairing
www.journey-to-better.com
57. Backlog Analysis Coding Review Testing Accept Done
Doing ReadyDoing ReadyDoing ReadyDoing Ready
(5)(5)(5)(5)
Let it run
Constraint remains
www.journey-to-better.com
58. 4. Expensive Changes
Some experiments:
• Improve their tools.
• Improve their environment.
• Improve their team work.
• Hire more people.
www.journey-to-better.com
59. Backlog Analysis Coding Review Testing Accept Done
Doing ReadyDoing ReadyDoing ReadyDoing Ready
(5)(5)(5)(5)
Expensive Changes
Improve tools (reduce manual effort)
Get Devs to help execute tests
Hire another tester
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60. Backlog Analysis Coding Review Testing Accept Done
Doing ReadyDoing ReadyDoing ReadyDoing Ready
(5)(5)(5)(5)
Let it run
Constraint has been broken
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61. 5. Repeat
• The bottleneck should now have shifted.
• Start all over again.
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62. Scrum enables TOC
• Task board
• Stand up
Identify
• Focus on Sprint Goal
• Scrum Master
Cheap
Changes
• Shared Team Success
• Self Organising Team
Align
Everyone
• Retrospective
• Self Organising Team
Expensive
Changes
63. Questions
Analogies
Utilisation, Batch Size, Item Size
Queuing theory in Agile
Queuing theory in Scrum
Improving the weakest link
Five Focusing Steps
Scrum enables TOC
Real life examples
Experiments
Contact: @andrewrusling arusling@halfbrick.com
Slides: http://bit.ly/21ExperimentsToImproveYourVelocity
64. QT Experiment Summary
• Pull in less total Story Points (-20%)
• Commit to less team hours (-20%)
• Limit # of I.P. User Stories (people/2)
• Show requesters your Scrum board
• Split up Releases (½)
• Split up Epics/Features (3 to 12 sub items)
• Shorten your Sprints (-1 week)
• Split up your User Stories (# in sprint ~= people)
• Use Spikes
• Practice Simplicity
• Split up your Tasks (max 1d)
65. TOC Experiment Summary
• Shield them from interruptions.
• Limit their WIP.
• Reduce their non value adding work.
• Limit WIP of upstream to match.
• Upstream do preparation work.
• Upstream improve their quality.
• Pair upstream with constraint staff.
• Improve their tools.
• Improve their environment.
• Improve their team work.
• Hire more people.