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.
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 |
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 |
|
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
The current power policy for 802.11-compatible wireless network adapters is not configured to use low-power modes.
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 |
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 |
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 |
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
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 |
The current power plan in use
Plan Name |
OEM Balanced |
Plan GUID |
{381b4222-f694-41f0-9685-ff5bb260df2e} |
The personality of the current power plan when the system is on battery power.
Enables Windows Media Player to optimize for quality or power savings when playing video.
Quality Mode |
Balance Video Quality and Power Savings |
The personality of the current power plan when the system is plugged in.
Enables Windows Media Player to optimize for quality or power savings when playing video.
Quality Mode |
Optimize for Video Quality |
Analysis was successful. No energy efficiency problems were found. No information was returned.
Battery ID |
0000001598G71C00086210 |
Manufacturer |
|
Serial Number |
0000001598 |
Chemistry |
Li-I |
Long Term |
1 |
Design Capacity |
62640 |
Last Full Charge |
57445 |
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 |
This computer enables Windows to automatically control the brightness of the integrated display.
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 |
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 |
