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Date:      Fri, 18 Nov 2016 08:49:41 -0700 (MST)
From:      Warren Block <wblock@wonkity.com>
To:        "Christoph P.U. Kukulies" <kuku@kukulies.org>
Cc:        "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org>
Subject:   Re: how long does a make buildworld normally take?
Message-ID:  <alpine.BSF.2.20.1611180843140.63396@wonkity.com>
In-Reply-To: <b3bc55ef-5389-0f46-752a-290a45ee97fc@kukulies.org>
References:  <b3bc55ef-5389-0f46-752a-290a45ee97fc@kukulies.org>

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On Fri, 18 Nov 2016, Christoph P.U. Kukulies wrote:

> how long does a make buildworld normally take?

There are too many options to really nail that down.  It varies due to 
hardware, build options, caching, and the version of FreeBSD.  The 
fastest machines take minutes, slower ones several hours.

With every go-fast option enabled on this Xeon E3 system, a full 
buildworld and kernel takes about twenty minutes (excluding LLDB). 
With few or no changes to source, that can be repeated in under two 
minutes, because it's all in cache thanks to bdrewery's build system 
work (NO_CLEAN and ccache).

> Has make buildworld time constant over the years?

No, although one version of FreeBSD usually has pretty consistent build 
times.



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