Im Engineering Windows 7 schreibt Dean DeWhitt aus dem Kernel-Team einen sehr lesenswerten Artikel über Windows 7 Energy Efficiency. Er erwähnt dabei ganz nebenbei eine neue Funktion in Windows 7: powercfg.exe /energy.

image

Ich habe diese Funktion gleich mal auf meinem Laptop ausprobiert. Hier die Ausgabe des Befehls:

Errors

USB Suspend:USB Device not Entering Suspend

The USB device did not enter the Suspend state. Processor power management may be prevented if a USB device does not enter the Suspend state when not in use.
Device Name USB Mass Storage Device
Host Controller ID PCI\VEN_8086&DEV_27CC
Host Controller Location PCI bus 0, device 29, function 7
Device ID USB\VID_0930&PID_0C05
Port Path 4
 
USB Suspend:USB Device not Entering Suspend
The USB device did not enter the Suspend state. Processor power management may be prevented if a USB device does not enter the Suspend state when not in use.
Device Name USB Root Hub
Host Controller ID PCI\VEN_8086&DEV_27CC
Host Controller Location PCI bus 0, device 29, function 7
Device ID USB\VID_8086&PID_27CC
Port Path  
 
CPU Utilization:Processor utilization is high
The average processor utilization during the trace was high. The system will consume less power when the average processor utilization is very low. Review processor utilization for individual processes to determine which applications and services contribute the most to total processor utilization.
Average Utilization (%) 4.34

Warnings

Power Policy:802.11 Radio Power Policy is Maximum Performance (Plugged In)
The current power policy for 802.11-compatible wireless network adapters is not configured to use low-power modes.
CPU Utilization:Individual process with significant processor utilization.
This process is responsible for a significant portion of the total processor utilization recorded during the trace.
Process Name sidebar.exe
PID 3764
Average Utilization (%) 1.39
Module Average Module Utilization (%)
\Device\HarddiskVolume2\Windows\System32\mshtml.dll 0.36
\SystemRoot\System32\win32k.sys 0.21
\SystemRoot\system32\ntkrnlpa.exe 0.20
 
CPU Utilization:Individual process with significant processor utilization.
This process is responsible for a significant portion of the total processor utilization recorded during the trace.
Process Name dwm.exe
PID 2980
Average Utilization (%) 0.56
Module Average Module Utilization (%)
\Device\HarddiskVolume2\Windows\System32\dwmcore.dll 0.15
\Device\HarddiskVolume2\Windows\System32\igdumd32.dll 0.13
\SystemRoot\system32\DRIVERS\igdkmd32.sys 0.05
 
CPU Utilization:Individual process with significant processor utilization.
This process is responsible for a significant portion of the total processor utilization recorded during the trace.
Process Name System
PID 4
Average Utilization (%) 0.41
Module Average Module Utilization (%)
\SystemRoot\system32\ntkrnlpa.exe 0.16
\SystemRoot\system32\DRIVERS\igdkmd32.sys 0.08
\SystemRoot\System32\DRIVERS\fvevol.sys 0.06
 
CPU Utilization:Individual process with significant processor utilization.
This process is responsible for a significant portion of the total processor utilization recorded during the trace.
Process Name SearchProtocolHost.exe
PID 3676
Average Utilization (%) 0.28
Module Average Module Utilization (%)
\SystemRoot\system32\ntkrnlpa.exe 0.19
\Device\HarddiskVolume2\Windows\System32\ntdll.dll 0.02
\Device\HarddiskVolume2\Windows\System32\rpcrt4.dll 0.00

Information

Platform Timer Resolution:Platform Timer Resolution
The default platform timer resolution is 15.6ms (15625000ns) and should be used whenever the system is idle. If the timer resolution is increased, processor power management technologies may not be effective. The timer resolution may be increased due to multimedia playback or graphical animations.
Current Timer Resolution (100ns units) 156000
 
Power Policy:Active Power Plan
The current power plan in use
Plan Name OEM Balanced
Plan GUID {381b4222-f694-41f0-9685-ff5bb260df2e}
 
Power Policy:Power Plan Personality (On Battery)
The personality of the current power plan when the system is on battery power.
Personality Balanced
 
Power Policy:Video Quality (On Battery)
Enables Windows Media Player to optimize for quality or power savings when playing video.
Quality Mode Balance Video Quality and Power Savings
 
Power Policy:Power Plan Personality (Plugged In)
The personality of the current power plan when the system is plugged in.
Personality Balanced
 
Power Policy:Video quality (Plugged In)
Enables Windows Media Player to optimize for quality or power savings when playing video.
Quality Mode Optimize for Video Quality
 
System Availability Requests:Analysis Success
Analysis was successful. No energy efficiency problems were found. No information was returned.
 
Battery:Battery Information
Battery ID 0000001598G71C00086210
Manufacturer  
Serial Number 0000001598
Chemistry Li-I
Long Term 1
Design Capacity 62640
Last Full Charge 57445
 
Platform Power Management Capabilities:Supported Sleep States
Sleep states allow the computer to enter low-power modes after a period of inactivity. The S3 sleep state is the default sleep state for Windows platforms. The S3 sleep state consumes only enough power to preserve memory contents and allow the computer to resume working quickly. Very few platforms support the S1 or S2 Sleep states.
S1 Sleep Supported false
S2 Sleep Supported false
S3 Sleep Supported true
S4 Sleep Supported true
 
Platform Power Management Capabilities:Adaptive Display Brightness is supported.
This computer enables Windows to automatically control the brightness of the integrated display.
 
Platform Power Management Capabilities:Processor Power Management Capabilities
Effective processor power management enables the computer to automatically balance performance and energy consumption.
Group 0
Index 0
Idle (C) State Count 3
Performance (P) State Count 2
Throttle (T) State Count 0
 
Platform Power Management Capabilities:Processor Power Management Capabilities
Effective processor power management enables the computer to automatically balance performance and energy consumption.
Group 0
Index 1
Idle (C) State Count 3
Performance (P) State Count 2
Throttle (T) State Count 0