[CMake] Does Makefile generated by CMake support make -jN?

[J Decker]

On Tue, Jul 12, 2016 at 7:54 PM, Chaos Zhang <zcsd2012 at gmail.com> wrote:

> Hi, all,
>
> I was trying to compile my project using CMake, after CMake generated
> Makefile.
> I used `/usr/bin/time -v make` to make the Makefile,  got the result:
> 'Percent of CPU this job got: 96%'.
> Then i used `/usr/bin/time -v make -j8` to make the Makefile, the result of
> CPU used is  'Percent of CPU this job got: 648%'.
> So i wonder if Makefile generated by CMake support make -jN, BTW my CPU is
> I7-4790, and after i use 'cat /proc/cpuinfo', there are 8 processors.
>
>
All the sources, headers, etc come from the IO system, from the disk,
probably you're running into the bottleneck of how long it takes to move
the memory for the compiler to do work on?  did you profile IO ?


> Thanks a lot,
> Chao
>
>
>
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