Request for kernel-compile time (advance user only)

[ted leslie]

Note that if you  multijob make from now on,
as great as it is, 
i have had maybe 5-10% of major make jobs
fail do to the makefile not being set up to parallel make,
so it will error out based on a unfound symbol,
just do a serial make at that point to pass the
error if it was caused by a make dependancy issue.
i am sure eventually all major project will compile fine
with multijob make.

With multi cores being the norm now,
there is also a concurrent bzip2 package out there

http://compression.ca/pbzip2/

that you will find interesting.
hopefully many more common programs get a good rewrite to support multi-cpus.

-tl

On Sat, 5 Apr 2008 23:38:05 -0400
"Giles Orr" <gilesorr-Re5JQEeQqe8AvxtiuMwx3w at public.gmane.org> wrote:

> On Sat, Apr 5, 2008 at 2:16 PM, William Park <opengeometry-FFYn/CNdgSA at public.gmane.org> wrote:
> > After building two Athlon64 (single-core) system, I'm still disappointed
> >  by the speed and throughput.  It's barely 50% faster than P4/2.8GHz +
> >  DDR-333.
> >
> >  Can some of you download kernel/config, and post compile time?  I'd
> >  would very interested in how other cpu/chipset perform.  Command line
> >  would go something like this:
> >
> >     wget http://home.eol.ca/~parkw/tmp/config-huge-smp-2.6.24.3-smp
> >     wget http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.24.3.tar.bz2
> >     tar -xjf linux-2.6.24.3.tar.bz2
> >     cd linux-2.6.24.3
> >         make distclean
> >         cp ../config-huge-smp-2.6.24.3-smp .config
> >         make oldconfig
> >         time make
> >
> >  On my computers, 'time make' takes
> >
> >     - 30min
> >         - Athlon64 LE-1620+/2.4GHz (45W)
> >         - OCZ DDR2-667 (5-5-5-15)
> >         - Asus M2N-VM DVI (GeForce 7050, nForce 630a)
> >
> >     - 25min
> >         - Athlon64 3800+/2.4GHz (65W)
> >         - Crucial Ballistix DDR2-800 (4-4-4-12)
> >         - Asus M2N-E (nForce 570 Ultra)
> >
> >  There will be difference due to different libraries and compilers, but
> >  they should all be in the same ball park.
> 
> "make oldconfig" asked about 20 questions, I answered the default to all.
> 
> Dell Inspiron 530
> Core 2 Quad 2.4 GHz (130W)
> 4 GB ? ? (n-n-n-m) ... but it's four sticks
> Dell cheapo mobo
> 
> (it's a new box with a quad core.  I was curious.)
> 
> "time make -j 5" (on ted's advice) first run (ie. no significant caching):
> "real   7m16s"
> 
> Holy crap - that included building all the modules too.  I may not
> dread "make" quite so much in the future.
> 
> I'd like to do a comparison run on my old Athlon 2700+ from 2003, but
> realistically I'm unlikely to get around to it and it would probably
> cause no end of problems being a 64 bit config on a 32 bit machine.
> 
> -- 
> Giles
> http://www.gilesorr.com/
> gilesorr-Re5JQEeQqe8AvxtiuMwx3w at public.gmane.org
> --
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-- 
ted leslie <tleslie-RBVUpeUoHUc at public.gmane.org>
--
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