Ken Moffat wrote:
On Tue, Dec 15, 2015 at 12:41:58PM -0600, Bruce Dubbs wrote:
Richard Melville wrote:
I would just add that running a 64 bit system on a low spec machine
slows it down further. Experience has shown me that, in particular,
the amount of RAM installed is very important. Other than that I've
encountered no other problems with a pore 64 bit install.
What do you consider a low spec system? I have built LFS on a system with
1G of RAM several times. You just need some swap to handle a couple of
large packages (gcc/glibc). CPU speed should not be a consideration.
My first 64-bit machines were single CPU, with 1GB RAM (PC133).
When I started doing that (perhaps 10 years ago), 64-bit building was
fine. But over the years everything got bigger and slower. One of
those machines was lying idle for a couple of years (too old to upgrade,
stuck on SATA-1 [ VIA chipset :-( ], no pressing reason to dispose of
it), but a few months ago I reinstated it after my A8 died. I already
knew that building x86_64 with 1GB and PC133 had become painful about
4 years ago, so I started with an old 32-bit system for kernel testing.
But even that was extremely painful (about an hour to build a kernel)
and I discontinued it.
That box has now been stripped so that the old case might get
reused. Any recent desktop using DDR3 memory will have one or more
4GB RAM sticks (although integrated graphics might use some of
that), and my impression is that building 64-bit on significantly less
than 3GB of RAM with recent gcc will be an exercise in pain. I do
not have an opinion about building 32-bit with so-little memory, and
I do not think I will build 32-bit again (except, perhaps, in qemu).
I just built an x86_64 system with 1G ram on a virtual server last month
without problems.
Intel(R) Xeon(R) CPU E5-2680 v3 @ 2.50GHz
The SBU unit value is equal to 123 seconds.
Total time required to build the system: 68.7 SBU
$ free
total used free shared buff/cache available
Mem: 1015012 90572 15632 80 908808 881836
Swap: 262140 48580 113560
A slow CPU can make things tedious, but it will still build.
-- Bruce
--
http://lists.linuxfromscratch.org/listinfo/blfs-support
FAQ: http://www.linuxfromscratch.org/blfs/faq.html
Unsubscribe: See the above information page
