[OE-core] [PATCH] sstate: Add sstate usage summary to the build

[Richard Purdie]

On Mon, 2018-08-27 at 23:47 +0100, richard.purdie at linuxfoundation.org
wrote:
> On Fri, 2018-08-24 at 23:24 +0200, Martin Jansa wrote:
> > This is nice addition, but maybe it would be worth explaining
> > somewhere what these numbers actually mean.
> > 
> > e.g. my current build shows:
> > Sstate summary: Wanted 181 Found 39 Missed 142 Current 279 (21%
> > match, 69% complete)

I should add that with a bit of experience you can learnt to interpret
these.

A build with a ~20% match often means the do_populate_lic sstate
matched and nothing else did. That means there is a fair amount of work
to be done.

On the other hand, the 69% is fairly positive as a large chunk of the
build is already complete.

I'm basing this just on having watched a few builds on the
autobuilder...

Cheers,

Richard