Messages in this thread | | | Date | Fri, 13 Jun 2003 12:35:47 -0400 (EDT) | From | Rik van Riel <> | Subject | Re: HyperThreading not working in 2.4.21-rc6-ac2 |
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On Fri, 13 Jun 2003, Mark Watts wrote:
> The following is a dmesg from a Dell PowerEdge 2650 server with 2 2.4Ghx > HT capable processors. To the best of my knowledge, I have HT enabled in > the bios but I still only see the physical processors (no siblings) even > though the cpus are numbered as if I have siblings. > > Any suggestions?
> Kernel command line: auto BOOT_IMAGE=2421rc6ac2 ro root=801 devfs=mount > hda=ide-scsi acpi=off ^^^^^^^^
The -ac kernel drops acpitable.c, which used to detect things like irq routing and HT "evil twin" CPUs and instead upgrades the ACPI subsystem. I suspect you need a different ACPI setting, though I'm not sure what it would be.
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