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Holger Freyther wrote:
> Hey Pals,
> 
> as Richard of o-hand.com will be too shy to mention it I'm hereby 
> claiming a cached run of BitBake only takes a couple of seconds while 
> still being able to reread changed BitBake files. This is an enormous 
> speed increase with almost no costs ATM.


With cache removed:

NOTE: Parsing finished. 0 cached, 3182 parsed, 62 skipped, 0 masked.
NOTE: build 200604161105: started

OE Build Configuration:
BB_VERSION    = "1.3.3.4"
OE_REVISION   = "b746c0a0b18085304c96e1bc29764f92c7b625db"
TARGET_ARCH   = "arm"
TARGET_OS     = "linux"
MACHINE       = "c7x0"
DISTRO        = "openzaurus"
TARGET_FPU    = "soft"

ERROR: Nothing provides dependency foo
NOTE:

real    1m47.142s
user    1m42.003s
sys     0m4.819s


With cache present:

NOTE: Using cache in '/data/build/koen/OE/build/tmp/openzaurus/cache'
NOTE: Parsing finished. 3182 cached, 0 parsed, 62 skipped, 0 masked.
ERROR: Nothing provides dependency foo

real    0m1.774s
user    0m1.617s
sys     0m0.140s

That is really, really, *really* fast. One small niggle: can we have the
summarry back?

regards,

Koen

> 
> Also a couple of other bugs have been fixed which result in a more 
> stable BitBake trunk. Now to the costs of this enormous speed increase:
>     -Moving variables (e.g. TIME, SRCDATE) do not work with the Cache 
> for a couple of things (mainly dependencies). We plan to fix that but 
> it is not too easy to do.
>     -For a bug workaround we currently do a copy of a variable which 
> slightly reduces performance again. We will fix that as well.
> 
> We would be glad if you could test this version of BitBake and report 
> failure or success to us. I would like to thank Richard for tackling 
> this task. And I hope we can release a faster and better tested  version
> of BitBake soon.
> 
> 
> regards
>     holger
> _______________________________________________
> Oe mailing list
> [email protected]
> https://www.handhelds.org/mailman/listinfo/oe
> 

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