Date: Mon, 23 Jan 2017 09:10:57 -0500 From: Lowell Gilbert <freebsd-stable-local@be-well.ilk.org> To: Walter Parker <walterp@gmail.com> Cc: freebsd-stable@freebsd.org Subject: Re: Building Kernel and World with -j Message-ID: <44k29l27f2.fsf@lowell-desk.lan> In-Reply-To: <CAMPTd_A%2Be6JCJ8SPLGVh4M2Jb=ZLqHDWN9y8JLcVHgWO0=zJ8Q@mail.gmail.com> (Walter Parker's message of "Sun, 22 Jan 2017 22:57:46 -0800") References: <CAMPTd_A%2Be6JCJ8SPLGVh4M2Jb=ZLqHDWN9y8JLcVHgWO0=zJ8Q@mail.gmail.com>
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Walter Parker <walterp@gmail.com> writes: > For decades there has always been a warning not to do parallel builds of > the kernel or the world (Linux kernel builds also suggest not to do this). > > Every once in a while, I see people post about 5 minutes. This only way I > can see this happening is by doing a parallel build (-j 16 on a Xeon > Monster box). > > Are parallel builds safe? If not, what are actual risk factors and can they > be mitigated? As a general rule, it's safe. But don't report failures from a parallel build. This is not so much an issue of parallel builds being unsupported as of the logs being harder to read.
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