On Fri, Nov 12, 2004 at 04:09:49PM -0800, Don Lewis wrote: > On 12 Nov, Ruslan Ermilov wrote: > > > "make universe" builds 6 worlds today. By starting it with > > "make -j12", you build 6 worlds in parallel, and another 6 > > jobs are made available for building these worlds. When one > > world finishes, 7 jobs will be available for building 5 other > > worlds, etc. This is fine as long as you're interested in > > the final result of "make universe". > > > > When testing a commit candidate change with "make universe", > > I want to detect the breakage as early as possible. This can > > be achieved by building less worlds in parallel, and giving > > more parallelism to individual world builds. The overall > > time of "make universe" won't change significantly. > > Another interesting case would be to build some number of worlds in > parallel, but not parallelize the build of any given world. Doing it > this way has the advantage of generating the log files in an unscrambled > order so that the cause of any errors can be more easily determined from > the log file. > This was and is possible. make -j3 universe JFLAG=-B Will build three worlds in parallel, each world with a single job. Cheers, -- Ruslan Ermilov ru_at_FreeBSD.org FreeBSD committer
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