Date: Fri, 4 Oct 2019 15:13:38 +0100 From: tech-lists <tech-lists@zyxst.net> To: freebsd-hackers@freebsd.org Subject: CPUTYPE?= in make.conf Message-ID: <20191004141338.GA72749@bastion.zyxst.net>
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[-- Attachment #1 --] Hi, I hope this is the right place to ask about this; if not please suggest where? I have a large poudriere system running 12.1-STABLE #0 r352869. It compiles ports in poudriere jails for many other smaller systems, some on same arch (amd64) but different cpu types. The host cputype is: # llvm-tblgen --version LLVM (http://llvm.org/): LLVM version 8.0.1 Optimized build. Default target: x86_64-unknown-freebsd12.1 Host CPU: sandybridge The actual cpu is Intel(R) Xeon(R) CPU E5-2690 0 @ 2.90GHz (x2) If I make a make.conf for a poudriere jail and define CPUTYPE?=btver1, several ports fail to compile, like python36 and lzo2. If I do the same and define it as CPUTYPE?=haswell, *everything* fails apart from building the jail itself. If I do the same thing on a different host, where the host cpu is: Intel(R) Core(TM) i7-4770K CPU @ 3.50GHz no failures happen. llvm-tblgen here reports haswell. The freebsd version is the same. What I'm asking is, is this a hardware failure on the failing system? Or is it a capabilities issue, in that the one having the problem hasn't got the right instruction set? The Xenon differs from the i7 in that it doesn't have these cpu instructions available: AVX AVX2 BMI1 BMI2 F16C FMA3 Supervisor Mode Execution Protection Advanced Bit manipulation Enhanced REP MOVSB/STOSB INVPCID MOVBE RD/WR FSGSBASE instructions RDRAND I'm hoping for a performance boost if ports are compiled to the specific cputype of the target machine. if I don't specify cputype at all on the failing system, the ports will compile. Is it an instruction set issue or is the Xenon actually failing in some way? thanks, -- J. [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEE8n3tWhxW11Ccvv9/s8o7QhFzNAUFAl2XU6EACgkQs8o7QhFz NAVAiQ//XlNxcqiyDOGak+MyRjdU1b1UNO7M7T/EwV449kJvxUNEdzz5X2yXLzGk jO8vxKUUgziVSyHAmAWD4hwifLmq2DlvUTUwds4nYKPUfSCIsv/cig12TUNjdPzQ LhXPaeblcLk3frS5sIsDr963ytm+u0AEBeAgi6M+wf750gDTVhA5hoO3x3WiARk0 tJKbAB9jmh4NPG7cL9dKDYn5eZhul6A99Q0EGkq3HQrM7uLNEAAd2WcT1G1d2nzk GH4qdfz8d+hyZsUwuDegJ08jF/JL8fXfIDTPZzPtSiWc1Rx61nFX/ntaVUHMhk8F Q4lFm1yjm53+GTTpbV7stH+iwuHl3SZNNM74vsTSGEHBivIJuxxR8HFXZncyYMZo N6u/VBHWtbf+qgH16DLWo38dMbnz/fS+W1kkENDSuVMT8sZUuiiLPNjL/Q15OF7k xJ6IJjRBKve9WGcWTNK436kRBV5+sN7G8M1mP/E3WzjeMtxfUjssnhbfzeVjpUGj 8qJ0Kz/HnWgAEwzSfLd1DnpTLESMy8W41ILha9PecxA8Y11sb2DvjKaCumzPjvN3 8zTj5nrPBNoD2Ed/NK4xkyMR9W1q3Q/dCgyn7ec1MFTMmDxNwSToBNazcyQGjsQU kO+7PLgGflDhbgw6vku/bSFV1b+2ZLPAKFZS2oYyaCznRT/z20E= =BAiD -----END PGP SIGNATURE-----help
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