Re: Re: Autodetect processing units with -j

I don't see any need to be aggressive in your response.   You're right, it came out clumsily.    I can  get -j almost 2x the number of CPU threads before builds start slowing down,    Maybe that 2*nproc is not that bad estimate, if it comes out I experiments.   (b) there's a lot  of latency of compilers waiting for files to be read over the network.   Of course none of this is very relevant to the issue under discussion.   I'm lost now.  That's the purpose of using "-j" with no argument: it means run as many  jobs as you can _subject to other constraints_... in this case load  level.  But, that's not how GNU Make currently works.    Thanks for explanation.     Whether it should be  changed is something to be discussed.   Changing the command line  interface of a 30+ year old program which is invoked probably hundreds  of thousands of times a day all over the world, is not to be taken  lightly.   I get that.