[nycbug-talk] multiple make buildkernel

[Bjorn Nelson]

On Dec 1, 2005, at 1:49 PM, Bjorn Nelson wrote:

> NYCBuggers,
>
> I have a quad processor box that is fairly slow cpu-wise.  I am  
> using the make buildworld -j option (benchmarks so far are 47 min 9  
> sec at j11, 47 min 18 sec at j10,  47 min 5 sec at j9, still  
> playing with this).  Buildkernel seems to take an hour and half at  
> least.  I am wondering what would be involved to get multiple  
> buildkernel's to run for different kernels.  I believe a make  
> buildkernel only writes to /usr/obj/usr/src/sys/KERNELNAME.  If  
> this is true, it should be okay for multiple buildkernel's to run,  
> right?

I just ran four make buildkernels with different kernels  
simultaneously without error, much faster.

-Bjorn