[Webhob] task types and outcomes

Barros Pena, Belen belen.barros.pena at intel.com
Fri May 31 04:49:47 PDT 2013

I have managed to gather answers to most questions regarding task
information for Web Hob (thanks Paul, Alex and Richard for you help!).
I've updated bug 4275 with a new task information set


And a list of columns that will be available in the tasks table:


Any questions or comments, let me know.


On 30/05/2013 15:28, "Richard Purdie" <richard.purdie at linuxfoundation.org>

>On Thu, 2013-05-30 at 13:10 +0000, Dragomir, CalinX L wrote:
>> I have a couple of questions regarding the tasks if you could help me
>> understand better what's going on in a build operation.
>> 1. From what I've read in the e-mails so far, it seems that there are
>> three types of tasks: built, sstate and skipped. Can you tell me what
>> each of them mean and how are they different ?
>> 2. It also seems that there can be multiple results for each of them.
>> Can you detail the meaning of each final state? (failed, missed,
>> etc.) ?
>> 3. How can I tell what type of task is the current executed task (if
>> it is sstate or built or anything else) ?
>Let me explain what bitbake actually does. How this is presented in the
>UI is a different question :)
>When you run "bitbake X", bitbake first goes through a "setscene" phase.
>This attempts to get the pre-built objects from the sstate cache. If
>does this in reverse dependency order so it will try X, then the things
>X depends on and so on.
>If it gets X, it would skip the dependencies in many cases.
>Bitbake then moves to the runqueue phase. If everything was obtained
>from sstate, great, we do nothing. If we couldn't get anything, we'd
>build from scratch. We also cover all the states in between.
>The tmp/stamps directory tells you the status of all the tasks. Each
>task can have a stamp or a setscene version of the stamp.
>Hope that helps a bit!

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