Messages in this thread | | | Date | Wed, 3 Dec 2003 14:40:23 -0800 | From | William Lee Irwin III <> | Subject | Re: HT apparently not detected properly on 2.4.23 |
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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@2.4ghz and hypertherading enabled shows 4 cpu's in > /proc/cpuinfo|proc/interrupts, with: > CONFIG_ACPI=y > CONFIG_ACPI_HT_ONLY=y > The same config with 2.4.23 only shows 2 cpus, even with: > CONFIG_NR_CPUS=4 > 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: > http://www.hardrock.org/kernel/2.4.22/irqbalance-2.4.22-MRC.patch > 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.
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