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Tartan (Company Background (Product (grown from 100k to 1,000k, 50% new…
Tartan
Company Background
15 years old
focus on ADA compilers
fast product & great customer support
customers care deeply about quality
25% of revenue is support
Product
grown from 100k to 1,000k
50% new dev/50% maintenance
19 developers
employees
long tenure
Process
in the beginning:
work driven by bug database
officially "informal"
30-50% time spent on cascading bugs
increasing reliability problems
Next:
TEST!
near-infinite bugs
no shipping!
dev group context
growing
maintaining experience
double number of families and variants
reserve for surprises doubles
many new features
many more issues caught late
let's try again!
find bugs as early as possible
3 commandments
replace "bug farms"
review old code
on-going Process Review
Questions
why was this hard?
it had always worked before
we don't like rules
we don't like to acknowledge that we're the problem