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Copy of Copy of Copy of Jak znaleźć czas na jakość?

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by

Witkor Żołnowski

on 20 October 2015

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Transcript of Copy of Copy of Copy of Jak znaleźć czas na jakość?

Queuing Theory
How to find a time for quality and improvements in any product development process?
Do you have time for quality and improvements?
Business guy asked developer:
- "How long it will take to finish this feature?"
Developer answered:
- "6 hours"
What do you think? What was the status of this feature...

...It is never so easy...
When we ask: How long will it take to finish X?

What we actually mean is: When X will be done?

And it is not the same...
So do not be efficient - be smart!
No... It can not be so simple...
Little Law
L = λW
The long-term average number of customers in a stable system L is equal to the long-term average effective arrival rate, λ, multiplied by the average time a customer spends in the system W
Why Scrum (sometimes) works?
So it is all about planning less PBI for the Sprint?
My boss will never let me do that... Taking less into the Sprint - no way...
Ask your boss if she want you to take more tasks into the Sprint or maybe she would rather want you to finish more tasks?
http://pragmaticcoders.com
@pragmaticcoders

Wiktor Żołnowski
@streser


Utilization (percentage of time a device is in use) = average arrival rate / service rate of device (speed of the device)

Find me at twitter @streser and @pragmaticcoders
Find me at twitter @streser and @pragmaticcoders
Find me at twitter @streser and @pragmaticcoders
Find me at twitter @streser and @pragmaticcoders
Find me at twitter @streser and @pragmaticcoders
Find me at twitter @streser and @pragmaticcoders
Find me at twitter @streser and @pragmaticcoders
Find me at twitter @streser and @pragmaticcoders
Find me at twitter @streser and @pragmaticcoders
Find me at twitter @streser and @pragmaticcoders
Find me at twitter @streser and @pragmaticcoders
Find me at twitter @streser and @pragmaticcoders
Find me at twitter @streser and @pragmaticcoders
Wiktor Żołnowski
WIP = Throughput Rate * Lead Time
Thank You!
Questions?
...after 6 hours (?)
Full transcript