Date: Wed, 12 Apr 2017 12:06:42 +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: <2B393FE8-C076-4714-A718-0EDA155A5037@freebsd.org> In-Reply-To: <20170412093737.GB22201@FreeBSD.org> References: <20170412034308.GA56148@FreeBSD.org> <79A96B5B-8E4C-4E2E-8108-BA4F05CBFA4F@freebsd.org> <20170412093737.GB22201@FreeBSD.org>
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> On 12. Apr 2017, at 11:37, Alexey Dokuchaev <danfe@FreeBSD.org> wrote: >=20 > On Wed, Apr 12, 2017 at 10:43:14AM +0200, Michael Gmelin wrote: >>> On 12. Apr 2017, at 05:43, Alexey Dokuchaev <danfe@FreeBSD.org> wrote: >>> ... >>> 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=3D= 1 >> in /etc/make.conf (works ok when just building a package with make, >> didn't test with poudriere[0]). When creating packages, the current >> compression algorithm can't take advantage of multiple cores, so it's >> kind of a bottleneck on modern machines. >=20 > That is my current best guest as well, but I could not confirm it because > /usr/local/sbin/pkg-static is stripped by default and I could not see any > function names when I attached gdb(1) to it. Will rebuild pkg(8) shortly > WITH_DEBUG to get more information. >=20 > Other alternative to PKG_NOCOMPRESS=3D1 could be PKGSUFFIX=3D.tbz (pkg-sta= tic > create -f tbz ...), will play with that as well. I don't think bzip will buy you much in terms of performance, supporting som= ething like lz4 would be useful. -m
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