Re: HT apparently not detected properly on 2.4.23

From: William Lee Irwin III
Date: Wed Dec 03 2003 - 17:42:55 EST

On Wed, Dec 03, 2003 at 01:46:38PM -0500, Ethan Weinstein wrote:
> With 2.4.22, my Supermicro X5DPL-iGM-O (E7501 chipset) with 2
> xeons@xxxxxx and hypertherading enabled shows 4 cpu's in
> /proc/cpuinfo|proc/interrupts, with:
> The same config with 2.4.23 only shows 2 cpus, even with:
> Also, I believe this has been reported before, but the system only seems
> to interrupt on CPU0 with either kernel, unless I apply a patch I found
> here:
> or run the `irqbalance' program.. which I don't care to do. This
> problem _seems_ to be isolated to the Supermicro, as HT does seem
> properly detected on several other SMP systems I have at work (compaq
> ML370/ML380) with 2.4.23

You probably have sparse physical APIC ID's.

-- wli
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