Date: Wed, 24 Jul 2019 13:21:35 -0400 From: mike tancsa <mike@sentex.net> To: Dimitry Andric <dim@FreeBSD.org> Cc: freebsd-stable@freebsd.org Subject: Re: Buildworld times (was Re: svn commit: r350256 - in stable/12: . contrib/compiler-rt/lib/sanitizer_common contrib/libunwind/src contrib/llvm/lib/DebugInfo/DWARF contrib/llvm/lib/MC contrib/llvm/lib/Object contrib/llvm/lib/Ta...) Message-ID: <b07742fd-2d3a-3ada-7066-6e5762e64473@sentex.net> In-Reply-To: <8373E39A-46E7-41AB-BC1F-8CDF65F47287@FreeBSD.org> References: <201907231840.x6NIeWeq024894@repo.freebsd.org> <b085970b-4e20-6802-182a-c6c976b4fc05@sentex.net> <0CB72C19-405C-41F0-8967-96F363228ED6@FreeBSD.org> <f428eb69-ae82-2255-19ce-3b81e8c68f6e@sentex.net> <8373E39A-46E7-41AB-BC1F-8CDF65F47287@FreeBSD.org>
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On 7/24/2019 12:02 PM, Dimitry Andric wrote: > On 24 Jul 2019, at 17:12, mike tancsa <mike@sentex.net> wrote: >> On 7/24/2019 9:45 AM, Dimitry Andric wrote: >>> On 24 Jul 2019, at 14:47, mike tancsa <mike@sentex.net> wrote: >>>> On 7/23/2019 2:40 PM, Dimitry Andric wrote: >>>>> Author: dim >>>>> Date: Tue Jul 23 18:40:32 2019 >>>>> New Revision: 350256 >>>>> URL: https://svnweb.freebsd.org/changeset/base/350256 >>>>> >>>> Hi, >>>> >>>> Not sure if this is just a difference in the versions or more things >>>> are being compiled, but I noticed a buildworld on my Ryzen went from ~ >>>> 31min to just over 40min. Is this expected ? >>> Most likely this is because it will now build a bootstrap compiler, >>> whereas previously your system may have skipped this step. Can you >>> compare the results when setting MK_SYSTEM_COMPILER=no and >>> MK_SYSTEM_LINKER=no ? >> Adding those two to src.conf and make.conf still shows 40min >> >> time make -j14 buildworld > /var/log/build.out ; time make -j14 >> buildkernel > /var/log/build.out. >> [Creating objdir /usr/obj/usr/src/amd64.amd64...] >> 25312.621u 1237.984s 40:09.72 1101.8% 45579+3473k 656666+3288880io >> 214633pf+0w >> 1675.467u 173.497s 2:37.90 1170.9% 37728+3167k 207118+3329460io >> 61829pf+0w >> >> Should I be setting these vars somewhere else ? > Ah, setting them in src.conf, make.conf or the environment will be > overridden from Makefile.inc1, unfortunately. It will then show > something like: > > make[1]: "/home/dim/src/stable-12/Makefile.inc1" line 343: SYSTEM_COMPILER: libclang will be built for bootstrapping a cross-compiler. > make[1]: "/home/dim/src/stable-12/Makefile.inc1" line 348: SYSTEM_LINKER: libclang will be built for bootstrapping a cross-linker. > > E.g, it detects that your system compiler is of a lower version than > the compiler in the source tree, and will thus bootstrap the latter. > > Can you compare the timings when setting MK_SYSTEM_COMPILER=yes and > MK_SYSTEM_LINKER=yes? In that case, both before and after r350256, the > results should be fairly similar, I expect. odd, its still taking the same 40min # time make -j14 buildworld > /var/log/build.out ; time make -j14 buildkernel > /var/log/build.out. [Creating objdir /usr/obj/usr/src/amd64.amd64...] 25281.564u 1233.340s 40:31.08 1090.6% 45595+3474k 633698+3288574io 213653pf+0w 1675.796u 172.082s 2:38.19 1168.1% 37746+3170k 205909+3329072io 61654pf+0w Looking at /var/log/build.out, the top line show # head /var/log/build.out --- buildworld --- make[1]: "/usr/src/Makefile.inc1" line 343: SYSTEM_COMPILER: libclang will be built for bootstrapping a cross-compiler. make[1]: "/usr/src/Makefile.inc1" line 348: SYSTEM_LINKER: libclang will be built for bootstrapping a cross-linker. --- buildworld_prologue --- despite # cat /etc/src.conf /etc/make.conf MK_SYSTEM_COMPILER=no MK_SYSTEM_LINKER=no KERNCONF=server MK_SYSTEM_COMPILER=no MK_SYSTEM_LINKER=no
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