Date: Mon, 23 Jan 2017 11:07:37 +0000 From: tech-lists <tech-lists@zyxst.net> To: freebsd-stable@freebsd.org Subject: Re: Building Kernel and World with -j Message-ID: <693bfe80-fb44-4a3f-c0c3-6fd79a0055b3@zyxst.net> In-Reply-To: <CAMPTd_A%2Be6JCJ8SPLGVh4M2Jb=ZLqHDWN9y8JLcVHgWO0=zJ8Q@mail.gmail.com> References: <CAMPTd_A%2Be6JCJ8SPLGVh4M2Jb=ZLqHDWN9y8JLcVHgWO0=zJ8Q@mail.gmail.com>
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On 23/01/2017 06:57, Walter Parker wrote: > Hi, > > 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? I remember warnings to the effect that while buildworld and buildkernel was safe, installworld and installkernel were not. I use -j32 on i7 monster boxes. -- J.
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