On Tuesday 22 June 2004 05:34 pm, Matthew Dillon wrote: > :On Thursday 17 June 2004 07:33 pm, Matthew Dillon wrote: > :> It kinda sounds like ACPI has bokered the other cpus. I'm not sure > :> why one would even *want* to use ACPI to idle down Xeon's in an MP > :> system, actually :-) > : > :Power and heat savings. > : > :-- > :John Baldwin <jhb_at_FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ > > All well and nice, but if you want power and heat savings you don't > purchase a big honking SMP box in the first place. > > This sounds like a disaster waiting to happen to me. ACPI barely works > on UP systems, there is no way I would ever trust it to properly HLT or > otherwise screw around with the cpu timing on an SMP system. HLT is > plenty good enough. IMHO this type of feature is not something that > should be turned on by default on SMP. Certain large CPU vendors disagree. http://www.theinquirer.net/?article=16739 -- John Baldwin <jhb_at_FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" = http://www.FreeBSD.orgReceived on Tue Jun 22 2004 - 20:05:08 UTC
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