Re: [gentoo-user] Problems with MAKEOPTS -j

[Dale <rdalek1967@gmail.com>]

Michael Mol wrote:
> Sometimes. My understanding is that it comes from packages which are
> badly constructed, and can't reliably handle parallel builds. I'm told
> that these cases are bugs and should be reported. Sometimes, if I
> watch build output fly by, I'll even see something like
>
> make -j10 -j1 (some target name)
>
> where a maintainer decided to put an overriding -j1 after MAKEOPTS.
>
>
> About two years ago, I found that, on my system (quad-core AMD Phenom
> 9650), -j8 resulted in the fastest build time, as measured by building
> ffmpeg.[1] Currently, I'm running -j10, and that's because I've been
> using distcc to pass a couple compile tasks off to other systems.
> (Though with the box I was deferring to scrapped for parts, I'll drop
> this down to -j8 again)
>
> [1] Tested by building in tmpfs. You can find my data here:
> http://multimedia.cx/eggs/ffmpeg-and-multiple-build-threads/#comment-150325
>
>    

This is interesting.  I changed mine to j8 too.  See how this works.  
CPUs are so fast nowadays, they can do a lot pretty fast.  I'm trying to 
imagine 10 years from now.  O_O

Dale

:-)  :-)