[plug] Slow kernel build
Fred Janon
fjanon at yahoo.com
Fri Sep 22 19:33:30 WST 2006
Build speed:
I don't know what the 'bogomips' are, but the P4 is a MUCH faster
processor than the Celeron. Their architectures are totally different
and yes the internal cache size also makes a difference, not only the
size but the architecture. That's why there are no servers with a
Celeron proc but there was tons of them with a P4. Last week I used a
Celeron based machine with 1 GB RAM, it took 5 mins to build my app
versus 30 seconds with a P4 with half the memory. One of my friends
used to do marketing at Intel Santa Clara, they know how to sell their
products (read fool the benchmarks...).
I wouldn't mind swapping my Celeron machine for your P4 if you really
think the P4 is slower... :) Just kidding...
--- Jim Householder <nofixed at westnet.com.au> wrote:
> Hi
>
> I have 2 computers, A and B. A has never had any problems that
> reseating connectors didn't fix. B originally had XP Home on it and
> would randomly reboot. A new power supply appeared to fix the
> problem.
> It now has FC5 on it and has only one minor glitch: I boot with
> vga=794 for 64x160 text, but about one time in 4 I get an 'invalid
> parameter' message and get 25x80. Reboot after hard reset always
> gets
> 64x160.
>
> Processors:
> A: P4 2.4 GHz 512kb cache, 4823 bogomips, and 1GB ram
> B: Celeron 2.6 GHz 128kb cache, 5216 bogomips, and 768MB ram
>
> Both machines have recently built 2.6.17.13 kernels and been yum
> upgraded in the last fortnight. I forgot - A has FC4 on it.
>
> The odd bit: A kernel build takes 30 minutes on A, and using the
> same
> .config takes 162 minutes on B! Memory does not appear to be the
> problem as swap is unused and there is at least 8% physical memory
> free.
> Nothing else is running to compete for cpu cycles other than the
> usual
> services.
>
> Would the smaller cache size account for the difference, or do I need
> to
> look elsewhere?
>
> TIA
> Jim
> _______________________________________________
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> http://www.plug.org.au/mailman/listinfo/plug
> Committee e-mail: committee at plug.linux.org.au
>
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