Date: Mon, 7 Nov 2011 18:46:24 +1100 From: Peter Jeremy <peterjeremy@acm.org> To: Alexander Best <arundel@freebsd.org> Cc: freebsd-hackers@freebsd.org Subject: Re: reducing compiler instances during buildkernel Message-ID: <20111107074624.GB91353@server.vk2pj.dyndns.org> In-Reply-To: <20111105223021.GA52651@freebsd.org>
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[-- Attachment #1 --] On 2011-Nov-05 22:30:21 +0000, Alexander Best <arundel@freebsd.org> wrote: >wouldn't it be possible to somehow spawn N gcc or clang instances >(make -jN buildkernel) and then pipe the src to one of those N instances? >just like with something like multics N processes were started and then people >used the job control language to load binaries into those processes. This is likely to require very non-trivial changes to gcc or clang. The major issue is that the process needs to be in a known initial state before beginning a compile - and it's very unlikely that the compiler cleans itself up enough to return to that state. If you really want to trim low-hanging fruit, try disposing of libtool and GNU configure instead - their overheads are _many_ orders of magnitude higher than make exec()ing gcc. -- Peter Jeremy [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.18 (FreeBSD) iEYEARECAAYFAk63jNAACgkQ/opHv/APuIcl+QCgiX+g1iNm47KV5GIA+yaJ474r CVUAoKQJQXVAkJfvFBhqbB1iUV5DAy/U =G+sz -----END PGP SIGNATURE-----help
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