<rant> D's makefiles... </rant>

[deadalnix via Digitalmars-d]

On Tuesday, 14 April 2015 at 12:07:18 UTC, Russel Winder wrote:
> On Tue, 2015-04-14 at 08:53 +0000, Atila Neves via 
> Digitalmars-d wrote:
>> 
> […]
>> The "-j" option should be there for tweaking only, by default 
>> I expect a modern tool to just use as many threads as I have 
>> cores. Which of course is exactly what Ninja does.
>
> N-1 not N on a system you are using as a workstation. N on a 
> compiler
> server, no problem.
>
> Waf chooses N and it makes the workstation unusable whilst the
> compilation is happening.
> […]

Sounds like your scheduler is messing up.

Compiling is CPU intensive when UI isn't. Meaning the compiling 
process should burns its CPU time while UI process is mostly 
idle. Meaning UI thread should take over when it needs to, as per 
most scheduler policies.