Here’s a list of all the individuals without whom we wouldn’t have Practical Performance Analyst including all its initiatives.

For the last seventeen years Alex Podelko (LinkedIn) has worked as a performance engineer and architect for several companies. Currently he is Consulting Member of Technical Staff at Oracle, responsible for performance testialex_podelko_imageng and optimization of Enterprise Performance Management and Business Intelligence (a.k.a. Hyperion) products. Alex periodically talks and writes about performance-related topics, advocating tearing down silo walls between different groups of performance professionals. His collection of performance-related links and documents can be found at He blogs at and can be found on Twitter as @apodelko. Alex currently serves as a director for the Computer Measurement Group (CMG,, an organization of performance and capacity planning professionals

Bob Wescott’s (LinkedIn),  is semi-retired after a 30 year career in high tech that was mostly focused on computer performance work. Bob has done professional services work in the field of computer performance analysis, including: capacity planning, load testing, simulationbob_wescott modeling, and web performance. He has even written a book on the subject: The Every Computer Performance Book. Bob’s fundamental skill is explaining complex things clearly. He has developed and joyfully taught customer courses at four computer companies and I’ve been a featured speaker at large conferences. Bob’s goal is to be of service, explain things clearly, teach with joy, and lead an honorable life.  His goal, at this stage of the game, is to pass on what we’ve learned to the next generation.

Cary Millsap (LinkedIn) is an entrepreneur, teacher, software technology advisor, software developer, writer, and Oracle Cary_Millsapsoftware performance specialist. His technical work is quoted in many Oracle books, in Wikipedia, in blogs all over the world, and in numerous conference presentations each month. He has presented at hundreds of public and private events around the world, and his blog is read by thousands of people each month. He is published in journals including Communications of the ACM. He wrote the book Optimizing Oracle Performance (O’Reilly 2003), for which he and co-author Jeff Holt were named Oracle Magazine’s 2004 Authors of the Year and The Method R Guide to Mastering Oracle Trace Data . He is a performance specialist at Enkitec LP, a firm that specializes in Oracle engineered systems performance. He is the owner and CEO of Method R Corporation, a company that provides software tools and education services to firms including Fortune 100 companies.

Dr. Jayanta Choudhury (LinkedIn), is a technology researcher at TeamQuest Corporation, focusing on capacity planning and performance modelling for IT resource optimization. He finished graduate school with a PhD degree from thejayanta_Choudhury University of Louisiana at Lafayette, in 2008. He has been working in the area of capacity planning and performance modelling of computing systems since 2007. His research interests include performance modelling, capacity planning, operations research, high performance computing, algorithm development, data analysis, numerical analysis, and numerical solution of PDEs, ODEs and their applications. He focuses to understand the fundamental principles behind the algorithms and methodologies used in the area of capacity planning and performance modeling.

Mark B. Friedman (LinkedIn) is a Principal and the CTO at Demand Technology Software, which develops Mark_FriedmanWindows performance tools for computer professionals. As a professional software developer, he is also the author of two well-regarded books on Windows performance, as well as numerous other articles on storage and related performance topics. He was a recipient of the Computer Measurement Group’s A. A. Michelson lifetime achievement award in 2005. He currently lives near Seattle, WA and blogs at

Dr. Rajesh Mansharamani (LinkedInrajesh_mansharamani) currently runs his own consulting outfit and is currently based out of Mumbai, India. Rajesh is an IIT (1988) graduate with a double degree from the the University of Wisconsin-Madison. Rajesh started his career at the TCS ( Research Center in Pune and then moving onto head the TCS Performance Engineering Research Center as it’s Vice President. His professional career spans two decades working with clients around the globe architecting and building high performance solutions. Rajesh specializes in Performance Requirements Analysis, Architecture & Design for Performance, Performance Benchmarking and Testing Strategies, Capacity Planning, and Applied Performance Modelling. You can reach Rajesh at

Denise Kalm (LinkedIn) Denise P. Kalm is the Chief Innovator at Kalm Kreative, Inc., and a board-certified career coach with DPK Coaching.  Her 30+ years in IT inform her work in both marketing and coaching.  She is a published author in bdenisekalmbluedress200oth the IT world and outside and a frequently requested speaker.   Her three books, Lifestorm (fiction), Career Savvy – Keeping & Transforming Your Job, and Tech Grief – Survive & Thrive Through Career Loss (with Linda Donovan) are available on all book and e-book sites.  Denise Kalm is also the founder of created Kalm Kreative, Inc. that offers services in areas that Denise is both passionate about and expert in. The areas of focus include – writing, editing, speaking and marketing. As a writer, communicator and marketer, Denise is dedicated to creating value and finding the missed opportunities including new ways to delight customers.

Dmitry Agranat (LinkedIn), is a Performance Engineering Principal with primary focus on bringing a positive impact on overall organizational system performance. His professional career has started in 2005 at Mercury (now HP Software). During this period, he has played various roles in the Performance Engineering (PE)  with extremely high focus on dmitry_agranatApplication and Database Performance. He has served as Performance Doctor (fixing unhealthy systems) , Performance Fireman (triage of production fires) , Performance Paramedic (putting the system together by applying field triage, duct tape, whatever data, domain knowledge, best guess, wishful thinking or folk-lore available to fix a problem) and Performance Plumber (removing blockages and searching for leaks). He has worked with many internal and external customers to both solve immediate performance problems as well as to educate on building solid organizational performance management methodology. Dmitry believes that Performance Engineering (PE) is still not well understood, agreed upon, unified or can be quantified, thus requires building solid and effective entrepreneurship around Performance domain.

Konrad Jalowiecki (LinkedIn) is a post graduate doctoral student at the University of Katowice, Poland. Konrad is currently doing his doctorate in Physics and Advanced Mathematics. In addition to working on his konrad_jdoctorate Konrad loves hacking with Open Source programming languages especially Python. Konrad has extensive experience using Open Source development platforms. He is also currently helping build a modelling (Statistical, Analytical and Simulation) engine using Python.  Konrad hopes to complete his doctorate and take up a faculty position with the opportunity to pursue some of his research interests.

Larry Dragich (LinkedIn) Director of Customer Experience Management at a large insurance company. He is actively involvLarry_Dragiched with industry leaders sharing knowledge of Application Performance Management (APM) best practices, resource allocation, and approaches for implementation. He has been working in the APM space since 2006 where he built the Enterprise Systems Management team which is now the focal point for IT performance monitoring and capacity planning activities.  Larry is also a regular blogger on APMdigest, and a contributing editor on Wikipedia focused on defining the APM space and how it ties into the critical ITIL processes many companies are now using.

Dr. Leonid Grinshpan (LinkedIn) is currently Technical Director at Oracle with a focus on Enterprise applications capacity planning, load testing, modelling, performance analysis, and tuning. Leonid has a few decades of experience on two complemenLeonid_Grinshpan_v0.1ting areas: computer science and information technology (IT) engineering. He holds a Ph.D in computer science is is also an author of a book on mathematical modelling. Leonid has worked on over 200 capacity planning and performance tuning projects for Fortune 500 customers over the past eleven years. Leonid is also the recipient of the highest award in the USSR for excellence in IT engineering – Award of the Counsel of Ministers of the USSR for design and implementation of an open CAD system for microprocessor based products. He tested out his entrepreneurial skills by co-founding the first Belarusian-American Joint Venture Software Security Belarus (acquired in 1997 by USA company Rainbow Technologies).

Mark Tomlinson (LinkedIn) is a performance engineering and software testing consultant. His career began in 1992 witMark_Tomlinsonh a comprehensive two-year test for a life-critical transportation system, a project which captured his interest for software testing, quality assurance, and test automation. That first test project sought to prevent trains from running into each other and Mark has metaphorically been preventing “train wrecks” for his customers for the past 20 years. He has broad experience with real-world scenario testing of large and complex systems and is regarded as a leading expert in software testing automation with a specific emphasis on performance.

Michael Kok (LinkedIn) lives and works in the Netherlands. His career started in 1965 after obtaining a bachelors degree in Michael_Kokelectrical engineering. He had various managing and consultancy positions, frequently related to computer performance. In 2005 he decided to further focus on performance engineering and founded the mBrace company ( where he is CTO now. Michael is the spiritual father of the mBrace methodology and the mBrace model for performance engineering. He frequently participates in performance projects most of them being performance testing projects. Michael is passionate on developing and marketing model based solutions and likes to share his thoughts on the subject.

James White (LinkedIn) – James has over 10 years of experience in developing and maintaining Java Architectures. As James_Whitepart of prior roles James has experience managing both on and off shore teams. He’s also recently been certified as an Accenture Certified Technical Architect. Prior to Accenture, James worked as a senior developer for Delta Dental where he was the primary developer for the company’s most critical application which processed billions of dollars worth of dental claims annually. James has also worked as part of the performance testing team and has experience in developing test scripts for load and stress testing.

James Pulley’s (LinkedIn) focus for the past decade has been assisting clients in finding answers to complex qujames_pulleyestions related to load, performance, response time and scalability. James began his career working for Microsoft in the support of Microsoft’s Operating Systems and Database solutions. After Microsoft James worked for Banyan systems, a pioneer in the integrated directory services model for PC networks. In 2001 James went out on his own, joining PowerTest two years later in an executive role. In 2010, PowerTest’s east coast operations became NewCOE Centers of Excellence in Performance engineering. James has been providing moderation on LoadRunner and associated performance engineering and software quality assurance internet forums since 2002.

Jason Koch (LinkedIn)  has 6 years technical delivery experience spent working across various organization functionjason_kochs that include support, technology, architecture including application design and development. Jason was recently inspired by Martin Thompson’s ideas of Mechanical Sympathy and over the last couple of years he has begun focusing on engineering systems for performance. Jason is also constantly encouraging design & development teams to consider performance proactively at the architecture & design phase as compared to viewing performance as purely a post development, testing and tuning effort.

Ramesh Iyer (LinkedIn) is a Senior Performance Test Architect, works for a large US MNC and is currently based out of Bangalore. Ramesh is creative, innovative & a results driven technology leader, with 13 years of experience in PerformaRamesh_Iyernce Testing, providing Test-Solutions, Performance – Project Management, Delivery Management. He is a self-motivated testing professional with expertise in driving product vision and product road mapping across various assignments keen on providing business test-solutions from ground-up. Ramesh also happens to be certified on Siebel7.5 and an ISTQB Professional.  Ramesh is a problem solver with a passion for technology; skilled in grasping the big picture, conceptualizing, translating project plans into action, developing, implementing solutions for the product & managing process setup for performance testing applications / products & partnering closely with business leaders & stakeholders within budgets and deadlines within time for deliverables.

Robert Limbrey (LinkedIn) is an experienced SPE professional based out of Nottingham in the UK and currently is part ofRobert_Limbrey CA as the EMEA Products Lead. As part of his role at CA Robert is responsible for driving Capacity Management and Mobility solutions into CA’s EMEA business.  His duties include defining the Go-to-market strategy, Creating synergies through partnerships, Sales Mentoring, Driving diligent consultative process through presales including Sales Analytics. Robert is a high Impact Sales and Consulting Executive, taking technology to markets via C-level propositions and a diligent consultative approach.

Steve Balzac (LinkedIn) is a professor of I/O Psych at the Wentworth Institute of Technology. Steve_BalzacSteve is the author of “The 36-Hour Course in Organizational Development” and “Organizational Psychology for Managers.” As the president and founder of 7 Steps Ahead, LLC Steve Balzac works with businesses to help them get unstuck and turn problems into opportunities. Steve regularly speaks at conferences on Team Development, Leadership Development, Change Management, Goal setting, concentration training, confidence building, relaxation and stress management techniques, project planning, group management, team motivation, team building, organizational development & executive coaching.

Sundares waran (LinkedIn) is an experienced Electronics and Communications Engineer and is currently bassundu photo smalled out of Palakkad, Kerala, India. Sundu’s past experience includes working as a Research Associate at the Indian Institute of Astrophysics, a very long stint (30+ years) as a Senior Engineer with an Electronics firm and more recently the development lead at Teknow Infosystems. Sundu’s current interests include web development using PHP, MySQL, Linux, Responsive Web Design and HTML 5 compliant interfaces. Sundu is currently helping design a modelling (Statistical, Analytical and Simulation) solution.

Dr. Tom Wilson (LinkedIn) is a scientist who specializes in system performance for highly critical realtime systems. Dr. Wilson tom_wilsonaims to better understand all of the performance domains without getting too involved in specific technologies. By profession Tom is a Performance Scientist, Mission Analyst at Lockheed Martin and is based out of Orlando, Florida. Tom provides analysis for performance (workload analysis, capacity planning) at the user-level which are called mission analysis. He also works on mission activities which require derivation to the system level.

Trevor Warren (Linked In) loves hacking with open source, designing innovative solutions and building communities. Trevor is inquisitive by nature, loves asking questions and some times does get into trouble for doing so. He’s passionate about certain things in life and building solutions that have the ability to impact people’trevor_warrens lives in a positive manner is one of them. He believes that he can change the world and is doing the little he can to change it in his own little ways. When not hacking open source, building new products, writing content for Practical Performance Analyst, dreaming up new concepts or building castles in the air, you can catch-him bird spotting (watching planes fly above his house).  Practical Performance Analyst as an Open Body Of Knowledge on Systems Performance Engineering (SPE) built & maintained by Trevor with the support of his army of volunteer elves (PPA Volunteers). You can reach trevor at –  trevor at practical performance analyst dot com. The views expressed on this web site are his own.

We are looking for the bright spark and if you think you have what it takes to build and grow this community reach out to me over email at trevor at practical performance analyst dot com.

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