Hi Robert, On my i7 quad core machine, I've set both values to 6. Setting it to 6 appears to be nearly the same as setting it to 8, I dare say a marginally faster by a minute. I can build core image console in around 22 minutes.
Elvis Sent from my iPad On Jan 9, 2013, at 4:55 PM, "Robert P. J. Day" <[email protected]> wrote: > > just noticed this in local.conf.sample: > > # For a quad-core machine, BB_NUMBER_THREADS = "4", PARALLEL_MAKE = "-j 4" > would > # be appropriate for example. > > i thought the general rule was that parallelism should be *twice* > the number of cores. that's certainly what's suggested in the yocto > QS guide: > > "Another couple of variables of interest are the BB_NUMBER_THREADS and > the PARALLEL_MAKE variables. By default, these variables are commented > out. However, if you have a multi-core CPU you might want to uncomment > the lines and set both variables equal to twice the number of your > host's processor cores. " > > thoughts? > > rday > > -- > > ======================================================================== > Robert P. J. Day Ottawa, Ontario, CANADA > http://crashcourse.ca > > Twitter: http://twitter.com/rpjday > LinkedIn: http://ca.linkedin.com/in/rpjday > ======================================================================== > > _______________________________________________ > Openembedded-core mailing list > [email protected] > http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/openembedded-core _______________________________________________ Openembedded-core mailing list [email protected] http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/openembedded-core
