First build-infra push to jdk8 -- try out the new build system!

[Mike Duigou]

(moved to build-dev)

On Apr 13 2012, at 02:07 , Magnus Ihse Bursie wrote:

> On 2012-04-13 03:10, Weijun Wang wrote:
>> I'm trying it on my Linux x64 now. The first feeling is that my computer is slowed down a lot more than the old build. The 4 CPUs all show a near 100% usage (it's building hotspot now). The guide says I can adjust it with --with-num-cores, but it's only available for configure time and not make, right?

Reducing num-cores may not be entirely effective. Linux scheduling generally favours throughput over latency. Any operationn 

> Let me try to address this...
> 
> First, one of the goals of the new build system is in fact to better utilize all available cores, to speed up build times. So when we're done, the dream scenario is a blazingly fast build that uses all available cpu power.
> 
> ... however, for this first push, we have not yet parallelized the build, so any build time improvements are of a smaller scale and more the result of more efficient makefiles.

Eagerly awaiting parallelized builds. :-)

Would it be too early to report  ‘warning: -jN forced in submake: disabling jobserver mode.’ results?

Mike