On Mon, Feb 11, 2013 at 01:17:41PM +0100, Fabian Keil wrote: > Erich Dollansky <erichsfreebsdl...@alogt.com> wrote: > > > On Mon, 11 Feb 2013 11:48:11 +0100 > > Fabian Keil <freebsd-lis...@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. > > > > > Trippled? Are you sure? I have the feeling it is much worse than this. > > I'm sure it depends on lots of factors and our worlds probably > don't even match. > > I intend to eventually plot the numbers I've collected over the years > (mainly to have a baseline for ZFS tuning) but so far I haven't and > just looked at the first and last ones: > > -------------------------------------------------------------- > >>> Kernel build for ZOEY completed on Mon May 31 17:18:12 CEST 2010 > -------------------------------------------------------------- > > real 10m42.935s > user 8m16.834s > sys 1m22.951s > -------------------------------------------------------------- > >>> World build completed on Mon May 31 18:38:59 CEST 2010 > -------------------------------------------------------------- > > real 71m16.524s > user 51m55.771s > sys 12m24.944s > > # FreeBSD r500.local 10.0-CURRENT FreeBSD 10.0-CURRENT #543 r+b74c91e: Sun > Feb 3 17:17:03 CET 2013 fk@r500.local:/usr/obj/usr/src/sys/ZOEY amd64 > -------------------------------------------------------------- > >>> World build completed on Tue Feb 5 21:33:55 CET 2013 > -------------------------------------------------------------- > > real 261m25.904s > user 189m2.690s > sys 22m46.777s > > # FreeBSD r500.local 10.0-CURRENT FreeBSD 10.0-CURRENT #547 r+21d959a: Sun > Feb 10 16:00:14 CET 2013 fk@r500.local:/usr/obj/usr/src/sys/ZOEY amd64 > -------------------------------------------------------------- > >>> Kernel build for ZOEY completed on Sun Feb 10 21:41:31 CET 2013 > -------------------------------------------------------------- > > real 18m34.822s > user 12m13.900s > sys 2m14.028s > > fk@r500 ~ $expr 261 / 71 > 3 > > I agree that it "feels" worse, though. > > Disclaimer: These aren't "benchmark" results, I didn't create them in > single-user mode and various relevant factors vary. I also didn't run > the numbers through ministat and don't intend to either. > > > Was it in 2009 when I could compile world in a few minutes on my quad > > core. The same machine takes now hours despite having more memory. > > I'm using a Core(TM)2 Duo CPU T5870 @ 2.00GHz and don't remember > ever being able to compile world in a few minutes. The bottle > neck on my system seems to be the puny 2 GB of RAM the linker > has to share with ZFS. > > At least I can still buildworld without first attaching an USB > stick for additional swap space which is necessary for Firefox ...
I also dislike that src build times increased over the years since I run CURRENT on my notebooks (starting 7-CURRENT, now 10-CURRENT). Wouldn't it be possible to add a DO_NOT_BUILD_CLANG_AND_GCC_IF_NOTHING_CHANGED= yes switch to src.conf? Building clang takes ages and gcc is also pretty big...
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