whiskey sushi and flow
DESCRIPTION
Come participate in a conversation that challenges you to think about everyday implicit flow parameters. Let's chat about my bar, and my frustration while waiting for a temaki on a Japanese restaurant.. These examples will help us understand and talk about flow parameters and queues.TRANSCRIPT
Agenda
• Flow numbers at my bar • Queue and wait 5me at a Japanese restaurant
• Q&A
Flow numbers at my bar
WIP
• The number of bo?les in the bar. Bo?les that have been opened, but are not yet empty.
Lead 5me
• The 5me between the bo?le is added to the bar and the bo?le comes out of the bar (empty).
Cycle 5me
• The 5me between two successive empty bo?les leaving the bar
Throughput
• The rate at which bo?les are passing through the bar.
Batch size
• The size of the bo?les.
My bar…
I was really interested in measuring a whiskey bo?le average lead 5me in my bar...
“The average number of work items in a stable system is equal to their average comple5on rate, mul5plied by their average 5me
in the system.”
John Li(le, 1961
Doing (Limit) Done To Do
10
5
9
31 18
17
21
4 7
5
1 12
John
Suzy
Paul
Amy
WIP
Lead Time
WIP = Throughput x Lead 5me
Please help me out...
12 bo?les...
an average of 6 bo?les per year…
What is the average lead 5me for a bo?le of
whiskey?
(a) 2 months (b) 3 months (c) 6 months (d) 1 year (e) 2 years
What is the average lead 5me for a bo?le of whiskey?
WIP = Throughput x Lead 5me
WIP = Throughput x Lead 5me
12 b = 6 b / year x Lead 5me
WIP = Throughput x Lead 5me
12 b = 6 b / year x Lead 5me
Lead 5me = 2 years
How to reduce lead 5me?
Queue and wait 5me
very hungry
one temaki
more than 30 minutes
very frustrated
“The total wait 5me for a given item is the sum of its queue 5me
plus its working 5me.”
Paulo Caroli, 2013 (at AgileTrendsSP)
Total Wait =
Queue 5me + Work 5me
Different kind of work items
Different kind of work items
10 minutes
1 minute
Acer a few months, I went back to the restaurant and took a look at their kanban system. I no5ced that all orders follow a single
queue.
Single Queue
Please help me out...
What is the wait 5me?
Single Queue
Queue 5me
between 30 and 40 minutes
4 large orders; 1 being worked on, 3 in the queue;
each large order takes 10 minutes
Work 5me 1 minute
a small order takes 1 minute
Total Wait =
Queue 5me (between 30 and 40 minutes)
+ Work 5me (1 minute)
How to reduce total wait 5me?
Two Queues
What is the new wait 5me for my small order? (small
order takes priority)
Paulo Caroli Agile Coach
[email protected] Twitter: @paulocaroli
Op;mizingTheFlow.com @paulocaroli
Thank you! Ques;ons?