On Mon, Feb 11, 2013 at 01:29:12PM +0000, David Chisnall wrote: > On 11 Feb 2013, at 10:48, Fabian Keil <freebsd-listen_at_fabiankeil.de> wrote: > > > It's unfortunate that the builworld time roughly trippled since > > 2010 but I guess that's progress and a more powerful system > > should fix it. I certainly welcome clang in general, though. > > In that case, it's worth noting that you can shave a fair bit off > the build time by not building gcc. WITHOUT_GCC=yes in src.conf > is worthwhile. > While not building a part of the base system will obviously speed up bulidworld, it seems to me that you're being a little too generous here. The buildworld-speed issue is clearly a problem with clang/llvm. On my very lightly loaded, 4-core opteron system with 16 GB of memory, I see WITH_CLANG="YES" WITH_GCC="YES" rm -rf /usr/obj/* time make -j4 buildworld 3634.55 real 9784.21 user 1286.08 sys WITH_CLANG="YES" WITHOUT_GCC="YES" rm -rf /usr/obj/* time make -j4 buildworld 3489.40 real 9413.90 user 1324.72 sys WITHOUT_CLANG="YES" WITH_GCC="YES" rm -rf /usr/obj/* time make -j4 buildworld 1928.38 real 5254.85 user 1075.68 sys -- SteveReceived on Mon Feb 11 2013 - 21:22:31 UTC
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