Date: Wed, 12 Apr 2017 10:43:14 +0200 From: Michael Gmelin <grembo@freebsd.org> To: Alexey Dokuchaev <danfe@FreeBSD.org> Cc: ports@FreeBSD.org Subject: Re: LLVM port(s) take very long time to package Message-ID: <79A96B5B-8E4C-4E2E-8108-BA4F05CBFA4F@freebsd.org> In-Reply-To: <20170412034308.GA56148@FreeBSD.org> References: <20170412034308.GA56148@FreeBSD.org>
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> On 12. Apr 2017, at 05:43, Alexey Dokuchaev <danfe@FreeBSD.org> wrote: >=20 > Hi there porters, >=20 > It had been annoying me for a while, so I figured I try asking here: > LLVM ports (particularly, llvm39-3.9.1) take abnormally long time to > package, e.g. right now it took 43 minutes (tmpfs-backed build area, > pkg-1.10.0_2.txz, AMD A8 APU @1900 MHz, plenty of RAM, no swap). >=20 > pkg was eating 100% (of a single core) during that time, so it looks > like it's actually busy (not waiting for I/O or something), but with > what? And can it be fixed? LLVM ports are real PITA to (re)build, > and while ccache helps to greatly reduce the build times, 3/4-hour > package time still cripples it. >=20 It's probably busy compressing the package. Try setting PKG_NOCOMPRESS=3D1 i= n /etc/make.conf (works ok when just building a package with make, didn't te= st with poudriere[0]). When creating packages, the current compression algor= ithm can't take advantage of multiple cores, so it's kind of a bottleneck on= modern machines. -m [0] probably not, but it seems like bdrewery is working on this https://gith= ub.com/freebsd/poudriere/issues/459=
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