[oe] [Bitbake-dev] Bitbake runqueue performance improvement

[Richard Purdie]

On Fri, 2009-07-24 at 13:37 -0400, Michael Smith wrote:
> Richard Purdie wrote:
> 
> > Is there any other feedback on the bitbake patch?
> 
> For me, it makes preparing the runqueue at least twice as fast (from ~2 
> to ~1 second for a small console image, ~14 to ~6 for something with X11).

Great!

> My task dependencies look identical before and after the patch, except 
> for the new harmless <image>.do_rootfs -> 
> <image>.do_package_write_deb,do_populate_staging that you wrote about at 
> the start of the thread.
> 
> Now if only "Resolving any missing task queue dependencies" were a 
> little faster :) That part's running about 40 seconds for me on a large 
> image.

As it happens, try the patch from
http://cgit.openembedded.net/cgit.cgi/bitbake/commit/?id=72bf7476b2492b6524cb8ff87ee5f4e86b28d975

It should apply to bitbake 1.8 just as well as trunk as those files are
the same.

If anyone is interested in profiling things, "bitbake foo -g -P" gives
the numbers on where its spending time.

Cheers,

Richard