[plug] Slow kernel build

[Fred Janon]

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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