Douglas R. Reno wrote:
On Sun, Dec 11, 2016 at 5:11 PM, Bruce Dubbs <[email protected]
<mailto:[email protected]>> wrote:
akhiezer wrote:
From: Bruce Dubbs <[email protected]
<mailto:[email protected]>>
Date: Sun, 11 Dec 2016 11:29:42 -0600
Subject: [lfs-dev] LFS and 32-bit systems
Do any of you still have a 32-bit Intel system that you use to
test/run LFS?
'Yes', nine different 32-bit machines; plus three 64-bit running
32-bit os.
*BUT*, these are for not-by-the-books builds: instead, they're for
builds/tests that derive in parts from the books.
I am thinking about rewriting the LFS preface section on
architecture to say:
The primary target architecture of LFS is the AMD/Intel x86_64
(64-bit)
CPU. In addition instructions are included that allow a build
on older
32-bit Intel CPUs, but testing is not regularly done on that
architecture.
s/regularly done/done regularly/
Minor, but OK.
The instructions in this book are also known to work, with some
modifications, with the Power PC and ARM CPUs. ...
I would then remove the second and third paragraphs and the
small table
between them.
Both paras and table are ok to leave in, until as/when 32-bit is
dropped altogether.
When I originally did that, the stats were from a Core2Duo as
documented. Even that is a bit long-in-the-tooth. I don't know how
valid that comparison is today.
It may be useful/'nice' to include stats from recent by-the-book
32-/64-
bit (properly-comparable) builds.
I could do that if I had the stats. I don't have a reasonable way to
compare today. I don't think giving numbers for a 3.3 GHz i7-5820K
really is a good platform for the stats.
My latest build took 64 minutes (vice Core2 at 190.6 minutes), but
that was at -j8 and omitted some, but not all tests in chapter 6.
I can remotely wake up my Core2 if you want those stats (same system, not
much has changed). I have a Xeon-based system here already with a 2.6 GHz
CPU with 4 cores if you want those instead.
You have too much going on right now. I'd rather you concentrate on BLFS.
This is not a priority.
What we need is a full jhalfs build with a 32-bit kernel and another full
jhalfs build with a 64-bit kernel. The best cpu would probably be an
older i3 or i5 at 3 GHz or so.
-- Bruce
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