root\wmi – ProcessorBiosInfo
Posted by: Richard Siddaway
Processor, Windows 7
The root\wmi namespace contains a massive number of classes. Unfortunately there appears to be very little documentation available for these classes. Another issue is that many of classes do not appear to return anything (at least on my Windows 7 system – further testing is required).
In this smalls series I intend to dig through some of these classes and see if we can find anything useful
There are a number of classes associated with the processor:
PS> Get-WmiObject -Namespace ‘root\wmi’ -List *Processor* | fw
ProcessorCStateEvent ProcessorPerfStateEvent
ProcessorThrottleStateEvent ProcessorAcpiCsdDependency
MSProcessorClass ProcessorBiosInfo
ProcessorBiosTStates ProcessorStatus
ProcessorAcpiCsd ProcessorAcpiTsd
ProcessorBiosCStates ProcessorAcpiCst
ProcessorAcpiXpss ProcessorAcpiTssState
ProcessorAcpiCstState ProcessorAcpiTsdDependency
ProcessorPerformance ProcessorAcpiXpssState
ProcessorAcpiTss
Out of this list the ProcessorBiosInfo works on Windows 7
PS> Get-WmiObject -Namespace ‘root\wmi’ -Class ProcessorBiosInfo
Active : True
ApicId : 0
InstanceName : ACPI\AuthenticAMD_-_x86_Family_17_Model_3_-_AMD_Athlon_Dual-Core_QL-62\_0_0
NtNumber : 0
PBlk : 4112
PBlkLen : 6
Pct : System.Management.ManagementBaseObject
ProcessorId : 0
Pss : System.Management.ManagementBaseObject
Active and Instance name are obvious. The NtNumber is the OS processor Id
PBlk refers to the processor control block – address and length
The Pct and Pss objects can be drilled down into
$cpu = Get-WmiObject -Namespace ‘root\wmi’ -Class ProcessorBiosInfo
$cpu[0]
$cpu[0].Pct
$cpu[0].Pct.Control
$cpu[0].Pct.Status
$cpu[0].Pss
$cpu[0].Pss.State
Follow these through to see what may be useful.
We can see everything like this
|
001
002 003 004 005 006 007 008 009 010 |
Get-WmiObject -Namespace ‘root\wmi’ -Class ProcessorBiosInfo |
foreach { $_ | select * -ExcludeProperty __* $_.Pct.Control | select * -ExcludeProperty __* $_.Pct.Status | select * -ExcludeProperty __* $_.Pss.State | select * -ExcludeProperty __* } |
The class description just returns the following
ACPI Bios Processor Information
Comment
RSS Feed
Email a friend
