On Mon, 2012-02-06 at 14:32 +0100, Martin Jansa wrote: > On Mon, Feb 06, 2012 at 02:28:30PM +0100, Eric Bénard wrote: > > Hi Richard, > > > > Le Mon, 06 Feb 2012 13:01:15 +0000, > > Richard Purdie <[email protected]> a écrit : > > > > > Its been a while since we had some performance numbers and there were > > > recently some questions about how current build time compared to > > > previous numbers. > > > > > > On my 12 core system, build time for qemux86 from scratch is ~42 > > > minutes. This compares favourably with previous numbers from that > > > system. Interestingly, switching to qemumips resulted in a build time of > > > 43 minutes in the same tmpdir suggesting that the native part of the > > > bootstrap process isn't the bottleneck. > > > > > > On the quad core (the system used for many of the previous numbers I'd > > > provided), build time for qemux86 was 105 minutes which again is roughly > > > consistent with where things were for 1.1. > > > > > what are your settings (PARALLEL_MAKE & BB_NUMBER_THREADS) used in > > both cases ? > > And what's the target in your tests? > > My quad core does core-image-minimal-mtdutils for qemux86* from scratch > in ~ 100 minutes.
Sorry, I should have said. Both are for building core-image-sato which is what I usually use as the benchmark. The quad core is running 8 bb threads and 4 parallel make. The 12 core was set to 48/48 but anything over 24 gives the build time above and this is effectively "unlimited" as it very rarely hits 48 tasks in parallel. Cheers, Richard _______________________________________________ Openembedded-core mailing list [email protected] http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/openembedded-core
