Showing posts with label power management. Show all posts
Showing posts with label power management. Show all posts

Monday, March 3, 2014

Android Power saver apps Vs. Inbuilt Power Saver

Hello Smart phone users,
The first and most basic problem to any smart phone user, android users specifically is about the battery and performance. While selecting the phone, most of us don’t consider the battery standby and performance, which is an important factor and not bound to deny. When this comes into your consideration, it’s too late, and you go browsing PlayStore for battery saving applications. I know presently many of you do have such app right now in your phone.
Let me tell you one thing, these apps don’t work; at an extent that you think. I have conducted few tests with my own device. I have downloaded those apps which are well known and recommended. In my Phone, I’ve used these apps- ‘Du-Battery saver’, ’Go Battery Saver’, ’Easy Battery Saver’, ‘Battery Doctor’. The link for news site; http://www.ibtimes.co.in/articles/531818/20131226/top-5-extend-battery-life-android-devices.htm

Here’s the screenshot from my device. The Battery doctor app showed its functionality defect in this image. Moment I finished installation, It created one shortcut, which is normal, but the moment I started the app, it gave notification that ‘shortcut icon created on home screen’.


LET’S BEGIN WITH TEST:
    1.    Go Battery saver: Initially when every such app start they show battery status and consumption level, this showed the same. It has profiles depending upon how user wants the performance. The default mode was “MY MODE” which is your current settings with respect to Brightness level, background apps, and widgets. In setting you will find TOOLS section, There’s a hot badge option TRASH, which kills your task running in background this can consume your battery not by killing application, but those applications are meant to run in background, those apps will restart and again will be killed by battery saver, this goes in cycle and hence draining battery. The interface is good, but doesn’t satisfy the need, pops out an Advertise every time you exit. Do not click on such Ads. They may contain malicious application for instance you can see in image 4.



2.    Battery Doctor: This app had no surprise element, I could see the same modules, same profiles the only thing I caught; was the app consumption chart, It showed the criteria for “High battery consuming apps”, this result included the battery saving application Go battery saver also named as “Go Power Master”. You can see that in image 5. After clearing that, only FB messenger was continued. Checking out the profiles, you will find the profile, deduces the overall screen dim as if your phone is SICK! No advertise pop outs but no such saving either. Hence, doesn’t satisfy the need.

 

 3.    Du Battery saver:  This battery saver is quite famous and is found with most of the users. There exists a premium version too, but the free version itself didn’t impress, so there’s no question on spending a penny over it. So far better UI than others. Gives a Monitor to have a watch over the apps as well as hardware, but once again it gave a chance to pick a fault. It showed the “Battery doctor” app consuming 1.6% of juice. Where earlier in “Go Power Master” the consumption of “Battery Doctor” was 0.43% you can refer the following screenshots. There may be rise obviously, but this not the all, the hardware section showed the consumption of Radio. It was ON according to the app., but actually it was OFF, since it needs the headset to work as antenna. Conclusion, dissatisfaction.




4.    Easy battery saver: This battery saver is total waste of data rates. The interface not so good. Same modules and less number of profiles. Another irritating thing, you cannot exit this app, you have minimize it compulsorily or see “About us” section or see “Top Apps” section. I would strongly recommend, do not install this app!














Task killers:
As I mentioned earlier, the Cycle of killing and evoking of background apps drains a lot of battery, “Du battery saver” and “Batter Doctor” come with Task killer widgets. In Image 13 if you observe after I optimized it, It shows that battery lives 8min longer and in Image 14 It kills same number of apps, in matter of time but notifies 56mins saved, which not at all a practical thing to be believed!



What Practically happens in your phone?

The image below here is self explanatory. You must be wondering if you can see this in your phone; well every Smartphone user can. The foll. image show the actual RAM usage of these so called Battery saving apps.Also all the junk you get for free in your Gallery can't be ignored.have a look.





What could have worked for your battery saving?
I would say there are two options for saving battery

A)   Either you get an app, which is smart enough to close or power off those apps and features which are not required, like Wi-Fi, Bluetooth, GPS and so on. There are some apps which do perform this, one of them is Battery Defender, but it can turn off Wi-Fi only, it has no control over others.

B)   Or you can turn off features by your own like, turning off haptic feedback, Brightness level, Wi-Fi  switch, mobile data whenever not needed. Some handsets come with feature of “Power Saving”. That can be the best option in my opinion.

THANK YOU… Any more help regarding Battery optimization and Phone performance you need, you may comment below.

Saturday, December 1, 2012

Check you laptop battery and thermal status in Linux



Advanced Configuration and Power Interface (ACPI) specification provides an open standard for device configuration and power management by the operating system. First released in December 1996, ACPI defines platform-independent interfaces for hardware discovery, configuration, power management and monitoring. The specification is central to Operating System-directed configuration and Power Management (OSPM), a system implementing ACPI, which removes device management responsibilities from legacy firmware interfaces.
The standard was originally developed by Intel, Microsoft and Toshiba, and were later joined by HP, and Phoenix. The latest version is "Revision 5.0", which was published on November 23, 2011.
ACPI aims to consolidate, check and improve upon existing power and configuration standards for hardware devices. It provides a transition from earlier standards to entirely ACPI-compliant hardware, with some ACPI operating systems already removing support for legacy hardware. With the intention of replacing Advanced Power Management, the MultiProcessor Specification and the Plug and Play BIOS Specification, the standard brings power management under the control of the operating system (OSPM), as opposed to the previous BIOS-central system, which relied on platform-specific firmware to determine power management and configuration policy. [Reference: Wikipedia, see this link].
If you are working with any GNU/Linux operating system then you may use the command ‘acpi’ to see the laptop battery status and other acpi information. It displays information about the ACPI (Advanced Configuration and Power Interface) system, based on the /proc/acpi file. Most GNU/Linux systems doesn’t contain this command by default. Install it by using:

sudo apt-get install acpi

Picture-1 Installatiom of 'acpi'
As shown in the picture above, the acpi will be downloaded from Ubuntu website and installed on your system. It nearly takes 70.7 KB after installation. Now you may use the command by its various options, as listed below.

Picture-2 Using 'acpi' and options
 -b, --battery
          Display battery information.
-B, --without-battery
          Do not display battery information.
-t, --thermal
          Display temperature information.
-T, --without-thermal
          Do not display temperature information.
-a, --ac-adapter
          Show whether the AC adapter is connected.
-A, --without-ac-adapter
          Do not show information about the AC adapter.
-V, --everything
          Show all information on every device.
-s, --show-empty
          Display information even on devices that are not available or not installed, such as empty slots for extra batteries.
-S, --hide-empty
       Do not display information on devices that are not operational or not installed.
-c, --Celsius
          Use degrees Celsius as the temperature unit. This is the default unit.
-d, --directory /path
          Use the specified path to ACPI information. The default path is /proc/acpi.
-f, --Fahrenheit
          Use degrees Fahrenheit as the temperature unit.
-h, --help
          Displays help information.
-k, --kelvin
          Use degrees Kelvin as the temperature unit.
-v, --version
          Display version information.

Try this command. It is very interesting and useful too.