[ On Wednesday, August 27, 2003 at 23:04:03 (-0700), Bryan Vyhmeister wrote: ]
> Subject: Slow Xeon Performance
>
> Has anyone else observed similar issues on a Xeon system? I am really
> not sure what to think. It seems very strange.

Unfortunately I've don't think I've ever done much work on any Intel
Xeon based system, but from what you've said I can ask some more
questions that  might help identify the problem:

How much cache is there on the Xeon processor?  Is it a P-III Xeon (I'm
assuming it is though I've not looked at your mother's specs)?

How much, if any, cache is on the Adaptec 2010S?

How much cache is on the particular drives you are using?

Did you enable write caching on the disks (dkctl setcache rw)?

Were the drives on the P4 system also set up as RAID-1?  With RAIDframe?

What kind, quantity, and speed of RAM was on the P4 system?

I'm assuming all your sources and objects are on the local disks...

I'm guessing your problem is partly to do with disk throughput, which may
be slower for sequential tasks such as a straight compile on the Xeon
system despite the use of such drives and controller.

You may also not be making the best use of that amount of RAM with a
GENERIC kernel, assuming that's what you've been booting on both
machines.

Are you using a memory filesystem for /tmp?  On both machines?

Have you added "COPTS+=-pipe" to /etc/mk.conf?  On both machines?

-- 
						Greg A. Woods

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