- FUNSIZE -

Have fun with funsize

Mihai Tabara @ Mozilla RelEng 2014 intern

Who am I?

I'm a student

I LOVE MOUNTAINS

HIKING DURING Summer ...

SKIING DURING WINTER

about Mozilla releng

• what do we do?
• what are we?
• what are we not?
• shipment and tools
  

about Mozilla releng

cocktail of crafts and callings

How quickly can we ship a chemspill release?
4-6 weeks => 11h
How long does it take to ship a new feature release?
12-18 months => 6 weeks
How many active code lines?
1 1/2 => 42
How many checkins per day?
15 => 325

about Mozilla releng

=> If you think it can't get worse, it can and it will

=> Premature optimizing is evil

=> What's you ETA? Okay, now 4x it

Changeset cycle

What did i do?

• Codename: funsize
• Mission: request  on demand service for partial MARs
  
• bugzilla whiteboard: funsize
  

Context Enriched

Context Enriched - issues?

1. why partials? - bandwidth issue
   
2. hardcoded - what you see is what you get
   
3. first compute, then upload x97
   
4. expensive/time consuming operation in build process
   

WHAT IS FUNSIZE ?

request on demand service for partial MARs

1. web app - powerful API
   
2. facing traffic -  tens of GB daily

Context Enriched

WHY FUNSIZE ?

1. logic extracted
   
2. caching
3. easier further dev
4. (future)saves time in build process
   

WHAT DID I Do ?

refined and polished a diamond

credits to ffledgling

WHAT I HAVE ADDED

1. code cleanup
2. fail safe pool workers
3. two layers caching
4. scaling/integration with AWS
   
5. new integration tool
6. funsizer!
   

THE result ...

1. deploy-easy server side
2. rock-solid REST API
3. pip install funsizer, magic in the back
   

Conclusions

1. high expectations
2. not a night shift - busyness analyst
   

RELENG Contributing

1. release-engineering@lists.mozilla.org
2. vpn-contributor access
3. aws contributor access
4. releng people ready to help
   

MOzilla REleng

interns get cool projects

blobber

funsize

production ETA usually > 3 months

THANKS

 #mozbuild #releng

rail, catlee,hwine,nthomas,bhearsum,mshal, mgerva, jlund

ffledgling, zeller

Misty, Jill

john o'duinn

QUESTIONS?