Support for hyperthreading in Solaris 9 x86

I have just received some new Dell Poweredge 2650 servers with 2 x 3Ghz processors. I have been trying to install Solaris 9 x86 (08/03) and to configure hyperthreading but I have not been able to do so. I am able to get the OS running but mpstat only reports 2 processors. I have enabled logical processors in the BIOS and upgraded the BIOS to version A17 with no real effect.

When I boot up (or install) I do get a "ACPI tables are not in reclaim memory" warning. I know that Solaris x86 is meant to support Hyperthreading via ACPI. Are there ACPI controls that I've forgotten to tweak?

Thanks in advance for your help

Anant

Responses(2)

VR

venkat reddy

1 Message

0

January 14th, 2004 11:00

Hmmm !! The reason is that the the BIOS puts the ACPI tables in the non- reserved memory , where as Solaris is
expecting it to be in the Reserved memory. As a result of this , Solaris disables the ACPI.
Since the OS depends upon the ACPI tables for the hyperthreading , so the hyperthreading support is disabled.

I am not sure whether Solaris or Dell guys are planning to fix it.

Anant Mistry_b50d88

2 Posts

0

January 14th, 2004 12:00

Thanks for the feedback. I have posted this issue at Sun Support too.

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Support for hyperthreading in Solaris 9 x86