[yocto] Build time data

[Koen Kooi]

Op 13 apr. 2012, om 11:56 heeft Tomas Frydrych het volgende geschreven:

> On 12/04/12 01:30, Darren Hart wrote:
>> Next up is storage. 
> 
> Indeed. In my experience by far the biggest limiting factor in the
> builds is getting io bound. If you are not running a dedicated build
> machine, it is well worth using a dedicated disk for the poky tmp dir;
> assuming you have cpu time left, this leaves the machine completely
> usable for other things.
> 
> 
>> Now RAM, you will want about 2 GB of RAM per core, with a minimum of 4GB.
> 
> My experience does not bear this out at all; building Yocto on a 6 core
> hyper threaded desktop machine I have never ever seen the system memory
> use to get significantly over a 2GB mark (out of 8GB available), doing
> Yocto build using 10 cores/threads.

Try building webkit or asio, the linker will uses ~1.5GB per object, so for asio you need PARALLEL_MAKE * 1.5 GB of ram to avoid swapping to disk.