Sunday, June 5, 2011

Power Efficiency Diagnostics Report In Windows 7

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If you have a laptop/ notebook with windows 7 Operating system, you can use the efficiency calculator  to generate loads of useful information about its power consumption. Used in the right way, this can help you make huge gains in terms of battery life and performance. 
Go to command prompt as an administrator by typing cmd  in Start Search,
At the command line, type  powercfg -energy and hit Enter, 
The system  will scan and  looking for ways to improve power efficiency. wait for a moment,  It will then publish the results in an HTML file. 


Here is an example result from my laptop  :

Power Efficiency Diagnostics Report


Computer Name SIM-PC
Scan Time 2011-06-05T13:56:21Z
Scan Duration 60 seconds
System Manufacturer TOSHIBA
System Product Name PORTEGE R500
BIOS Date 03/04/2008
BIOS Version Version 1.60
OS Build 7600
Platform Role PlatformRoleMobile
Plugged In false
Process Count 37
Thread Count 464
Report GUID {d0d4752c-7196-4977-9809-dd1903a80108}

Analysis Results


Errors


Power Policy:Power Plan Personality is High Performance (On Battery)
The current power plan personality is High Performance when the system is on battery power.

Power Policy:Sleep timeout is disabled (On Battery)
The computer is not configured to automatically sleep after a period of inactivity.

Power Policy:802.11 Radio Power Policy is Maximum Performance (On Battery)
The current power policy for 802.11-compatible wireless network adapters is not configured to use low-power modes.

Power Policy:PCI Express ASPM is disabled (On Battery)
The current power policy for PCI Express Active State Power Management (ASPM) is configured to Off.

Power Policy:Power Plan Personality is High Performance (Plugged In)
The current power plan personality is High Performance when the system is plugged in.

Power Policy:Sleep timeout is disabled (Plugged In)
The computer is not configured to automatically sleep after a period of inactivity.

Power Policy:Minimum processor performance state is 100% (Plugged In)
The processor is not configured to automatically reduce power consumption based on activity.

Power Policy:PCI Express ASPM is disabled (Plugged In)
The current power policy for PCI Express Active State Power Management (ASPM) is configured to Off.

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 Fingerprint Sensor
Host Controller ID PCI\VEN_8086&DEV_27C9
Host Controller Location PCI bus 0, device 29, function 1
Device ID USB\VID_08FF&PID_1600
Port Path 1

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_27C9
Host Controller Location PCI bus 0, device 29, function 1
Device ID USB\VID_8086&PID_27C9
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 (%) 9.34

Warnings


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) 10000
Maximum Timer Period (100ns units) 156001

Platform Timer Resolution:Outstanding Timer Request
A program or service has requested a timer resolution smaller than the platform maximum timer resolution.
Requested Period 10000
Requesting Process ID 2060
Requesting Process Path \Device\HarddiskVolume2\Program Files\Mozilla Firefox\plugin-container.exe

Power Policy:Display timeout is long (On Battery)
The display is configured to turn off after longer than 15 minutes.
Timeout (seconds) 600

Power Policy:Display timeout is long (Plugged In)
The display is configured to turn off after longer than 10 minutes.
Timeout (seconds) 900

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 firefox.exe
PID 2140
Average Utilization (%) 5.76
Module Average Module Utilization (%)
\Device\HarddiskVolume2\Program Files\Mozilla Firefox\xul.dll 2.83
\Device\HarddiskVolume2\Program Files\Mozilla Firefox\mozjs.dll 1.62
\SystemRoot\system32\ntkrnlpa.exe 0.29

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 plugin-container.exe
PID 2060
Average Utilization (%) 0.95
Module Average Module Utilization (%)
\SystemRoot\system32\ntkrnlpa.exe 0.28
\Device\HarddiskVolume2\Windows\System32\Macromed\Flash\NPSWF32.dll 0.21
\Device\HarddiskVolume2\Program Files\Mozilla Firefox\xul.dll 0.11

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 (%) 0.22
Module Average Module Utilization (%)
\SystemRoot\system32\ntkrnlpa.exe 0.12
\SystemRoot\System32\Drivers\cng.sys 0.03
\SystemRoot\system32\halmacpi.dll 0.02

Information


Platform Timer Resolution:Timer Request Stack
The stack of modules responsible for the lowest platform timer setting in this process.
Requested Period 10000
Requesting Process ID 2060
Requesting Process Path \Device\HarddiskVolume2\Program Files\Mozilla Firefox\plugin-container.exe
Calling Module Stack \Device\HarddiskVolume2\Windows\System32\ntdll.dll
\Device\HarddiskVolume2\Windows\System32\winmm.dll
\Device\HarddiskVolume2\Program Files\Mozilla Firefox\xul.dll
\Device\HarddiskVolume2\Windows\System32\user32.dll
\Device\HarddiskVolume2\Program Files\Mozilla Firefox\xul.dll
\Device\HarddiskVolume2\Program Files\Mozilla Firefox\plugin-container.exe
\Device\HarddiskVolume2\Windows\System32\kernel32.dll
\Device\HarddiskVolume2\Windows\System32\ntdll.dll

Power Policy:Active Power Plan
The current power plan in use
Plan Name OEM High Performance
Plan GUID {8c5e7fda-e8bf-4a96-9a85-a6e23a8c635c}

Power Policy:Power Plan Personality (On Battery)
The personality of the current power plan when the system is on battery power.
Personality High Performance

Power Policy:Power Plan Personality (Plugged In)
The personality of the current power plan when the system is plugged in.
Personality High Performance

System Availability Requests:Analysis Success
Analysis was successful. No energy efficiency problems were found. No information was returned.

Battery:Battery Information
Battery ID 0000001901G71C00086110
Manufacturer
Serial Number 0000001901
Chemistry Li-I
Long Term 1
Design Capacity 62640
Last Full Charge 51451

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

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