Dports, Dsynth and Options

[Seann Aswell]

On 2/2/23 12:19, Matthew Dillon wrote:
> The packages get larger and larger as the build goes on 
> (since the dependencies have to be built first and those are smaller 
> packages).  

It took about 24 hours to get roughly 80% complete, and about another 24 
hours to finish the remaining 20%. At one point there were 7 versions of 
LLVM and 3 versions of GCC being compiled simultaneously, which did use 
a fair amount of swapcache. However, while that was happening, the other 
10 builders were humming along processing smaller packages. Very 
impressive...

> As long as a good 
> middle of the road Number_of_builders and Max_jobs_per_builder config is 
> specified, Dsynth does a pretty good job adjusting the concurrency based 
> on its understanding of memory requirements and swap use.

I wasn't sure how to most effectively configure the builders/jobs. For 
the first run it was 20 builders and 2 jobs per builder (assuming 20 
physical cores plus hyperthreading = 40 cores). Is my understanding of 
those variables correct?