On Sun, Apr 12, 2015 at 09:45:31AM +0100, Richard Purdie wrote: > To allow us to upgrade to the latest binutils we ended up enabling > building of gold. Unfortunately this is clearly visible on our > performance benchmarks, it leads to a 3-4 minute speed loss in overall > build time :(. > > Locally, benchmarks for building binutils-cross show: > > Just ld: > > 95.87user 48.36system 1:05.66elapsed 219%CPU (0avgtext+0avgdata > 162480maxresident)k > 0inputs+1030184outputs (0major+7753895minor)pagefaults 0swaps > > with gold: > > 366.22user 67.25system 1:14.29elapsed 583%CPU (0avgtext+0avgdata > 435488maxresident)k > 248inputs+1205792outputs (1major+12572236minor)pagefaults 0swaps > richard@dax:/media/build1/poky/build2$ > > So whilst it only takes 10 seconds longer overall for me on what is a > pretty powerful machine, you can see a huge increase in user time and > CPU usage. I believe that on our slower quad core performance benchmark > machine, this equates to a few minutes. > > The question is therefore, do we have a better way to fix things? Is > this performance drop acceptable?
It's acceptable for me, I think most people with slower machines (with less ram) are already using ls-is-gold, so it won't make any difference for them. Regards, -- Martin 'JaMa' Jansa jabber: [email protected]
signature.asc
Description: Digital signature
-- _______________________________________________ Openembedded-core mailing list [email protected] http://lists.openembedded.org/mailman/listinfo/openembedded-core
