Database Users

Multitasking the Android Way

My apologies if this is a repost but I came across this yesterday and thought people here might be interested. Anyone that has ever been confused by the way Android multitasks (let's be honest, we all have) should read this.
http://android-developers.blogspot.com/2010/04/multitasking-android-way.html

Interesting. And the author certainly has a cool last name.

Definitely a good read. Thanks.

I'm still TOTALLY confused between what a process vs service is and how everything works together. what's the difference between an app I just sent to the background vs its associated service or process? are they one and the same?

RogerPodacter said:
I'm still TOTALLY confused between what a process vs service is and how everything works together. what's the difference between an app I just sent to the background vs its associated service or process? are they one and the same?
Click to expand...
Click to collapse
A process is any task that the CPU has to perform. For example, say you open a text file. That's a process. Once the file is opened, the process is done.
A service is a long-running task, often launched by a process. More specifically, services are A) for tasks need to run in the background, B) usually for long-periods of time (or indefinitely), and C) most importantly, independent of user-input. Instead, services usually respond to changes in the system (ie Battery Indicator, see below), or periodically checking the internet for something.
- For example, the Battery Indicator app, which puts the battery percentage in the status bar (see picture below). Whenever the battery changes in the system, the Battery Indicator service is alerted, and the percentage in the status bar is changed.
- Another example is the Google Talk service, which is running whether or not you launched the app. That's because it needs to stay open in case someone messages you.
Without services, nothing could run in the background for long periods of time. For example, without the Google Talk service, if you wanted to receive a message, you'd have to have the app open and in the foreground 24/7. Once you opened another app, you'd go offline. (coughiPhonecoughcough )
You can view your services in Settings -> Applications (on Sense UI anyway).
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Very informative, thanks for that.

Excellent blog post! Thanks!

This would definitely seem to support the "No task killer" philosophy.

Good stuff to see...thanks

aujbman said:
This would definitely seem to support the "No task killer" philosophy.
Click to expand...
Click to collapse
I wish I could agree with that but without some type of task manager, my N1 does not run smooth at all. =\

Display setting

Anyone know the different by activating mobile bravia engine (or not)? I see it just make no different at all. Just what I am thinking, may be not activate MBE can save more batt life. But this just my thought. Any one can give more acurate informatiom?
Setting>display>mobile bravia engine.
GN Multimedia-Xperia Arc

Bravia is activited in 1st pic & in 2nd, it's off Pic from amobil.no
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i was also testing this and disabling looks like a battery saver (not 100% sure)

commodoor said:
i was also testing this and disabling looks like a battery saver (not 100% sure)
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I think also disabling it is a battery saver

Wouldn't it only be activated when watching videos or pictures anyway? Can't imagine it taking too much energy when not actually needed...

From a norwegian site, Mobili.no
"This technology improves image quality when viewing movies or scroll through pictures, and are passive when navigating the main menu, write messages or doing other things that do not necessarily demand the highest image quality.
Bravia Engine is not hardware based. We are talking about software that processes your media and make sure we give them the best possible presentation on the screen.
And the image quality, there is nothing to say on. Sony Ericsson Arc delivers stunning quality, and both pictures and photos looks very good on the 4.2 inch screen.
You can however disable the Bravia from the options menu, if you prioritize battery rather than image quality."

It is only effective when viewing multimedia content. I turn it off after I found the screen itself is good enough for me.

stiffen said:
It is only effective when viewing multimedia content. I turn it off after I found the screen itself is good enough for me.
Click to expand...
Click to collapse
So how do you think about the batt after disable mobile bravia engine?
GN Multimedia-Xperia Arc

Sudden and unexplained drop in screen 'bit', resulting in poor colour gradients

I know there is already a thread about the general performance with gradients on this phone, but my phone just suddenly seems to have switched to 256k colour mode rather than 16M.
Doesn't affect videos, but does in games and static images.
See the gradient on my Equalizer widget and the icons at the bottom compared to an earlier screenshot on the right.
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And this is looking at a picture I took in the Gallery.
Any ideas what could cause this sudden degradation of quality? I haven't changed any settings.

Same here
Did you ever figure this out ..i too have the same problem .. very easy to notice when using quadrant .

i would be keen to see if this has been resolved this happen recently but only for a split second before it corrected itself, maybe wiping the phone and flashing might fix it

i've noticed this and found if you go to display properties and disable 'Auto Adjust Screen Powe' it brings my pictures back to life. Not sure if this is the fix but it helped me.

update
After trying lots of custom roms and different kernels i decided to try the stock Orange branded rom BVKG3 and now my graphics are nice and clear again.
Can anyone explain why this is happening and is there an unbranded rom that will work for me ?
Thanks

Got this when i was using cf3d and used an option on it (forgot what it is) to reduce wuality but improves performance.
Sent from my GT-I9100 using xda premium

Its chainfire3d it affects gallery too. Change default settings back. Reduce trxture quality to off !
Sent from my GT-I9100 using XDA App

sorry for beig a noob but how do i change the settings do i need to download a plugin .. i have not changed any settings ?
---------- Post added at 08:39 AM ---------- Previous post was at 08:12 AM ----------
ok so i dloaded chainfire and had a look at the settings..ie reduce texture quality and its unchecked .. and also seems to make no diference when it is checked

I still have no clue what is causing this ..tried Villainrom too still happening.

Driving me nuts
ok so this is getting annoying .. I have 2 sgs2 phones one black one white.
Both run perfect with the standard Branded orange rom no bad graphics / rendering.
Both the same age model etc.
However the black one has the problem already mentioned.
So now i have downloaded android hardware info tool just to make sure they were physically identical and they are ..
So just to recap --same rom --same kernel-- same baseband

GingerDX battery drain related thing..??

Hello guys,
I found something strange in GingerDX ROM that I have marked in screenshot
Even this process can't be stopped more than 5mins. It starts itself.
In other CM7 ROMS there is no such process that is running in background.
AS written in second screenshot "kept for better speed", may be this is the process that also provide speed to system but also drain battery.
What do you think about it..??? Did anyone also found this..???
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Well i dont have anything like this and im using gdx22 with alfs06 no cap kernel
Sent from my X8 using XDA App

Nope, haven encounter such issue
Sent from my X8 using XDA App

I am prettu sure have this thing in cached processes, not in running processes. Click the grey or green line on bottom of screen and you will see...
Hit the THANKS button if I helped you!
This mail was delivered from my W8 using Tapatalk!!

android core apps is a cached process. so it rests in the green half of the RAM indicator line. closing it wud result in less RAM

KASHYAP9 said:
Hello guys,
I found something strange in GingerDX ROM that I have marked in screenshot
Even this process can't be stopped more than 5mins. It starts itself.
In other CM7 ROMS there is no such process that is running in background.
AS written in second screenshot "kept for better speed", may be this is the process that also provide speed to system but also drain battery.
What do you think about it..??? Did anyone also found this..???
Click to expand...
Click to collapse
GingerDX v022 on Stock Kernel... NO SUCH PROCESS
"Running" shows ...
Maps, Settings, Maps, Android Weather, 3G Watchdog, DSPManager, Google Services, Android-Keyboard.
It's also not listed in the "All" tab, and I even can't find it with Titanium Backup.
Better investigate which app/mod spilled it into your ROM.

Tip for JB stock ROM users.

I am far from being an Android power user. I don't use mods, skins or launchers and prefer to stick to stock ROMs.
The farthest I go is to root my device, given the fact that some apps I need either work better with it or won't work at all without it.
So you have an idea, just the other day I posted I couldn't figure what "Greenify" was good for since, as I understood it, If we have to enter the app to hibernate/de-hibernate the target apps we might as well just launch and kill them, as needed, only to be kindly enlightened by another user about the fact of life that some apps do still run in the background, even after we've killed them.
...Pretty "tech challanged", right?
...but, coming from this "restricted" background, I do have a tip to share with you guys after having tried some online suggestions to deal with the relative "sluggishseness" and low Quadrant benchmarks I was faced with, after having migrated to JB XSP.
Apps took up to 3 seconds to launch and I was having this kind of values in Quadrant:
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I tried a bunch of stuff to improve things up. I removed a series of apps I rarely used, even some system ones, using SystemApp Remover and inhibited others like MacroDroid. Still, no improvements.
Until...
Today, acting on tip read online, I went to "Settings" ---> "Developer Options" ---> (Activate) ---> "Drawing" and changed "Window animation Scale", "Transition Animation Scale" and "Animation Duration Scale" from the default values to 0.5x.
I got definite improvement in launch response, general "sluggishseness" with Quadrant values jumping to this:
Happy Puppy now
Hope this helps!
XK

I tried your suggestion and here are my results
Before change
4488
After change
3446
Restored to original settings
4146
Sorry for lack of images but I am unable to attach them.
In my case those settings did not improved the performance it actually decreased it. This might be on a case by case scenario but a good tip nonetheless
Sent from my GT-P6800 using xda premium

Note the huge jump in the I/O score. Seems out of character with the other devices.

"media" app. is consuming too much battery n running constantly even after force stopped. How to solve this issue..?

aries8 said:
"media" app. is consuming too much battery n running constantly even after force stopped. How to solve this issue..?
Click to expand...
Click to collapse
use this https://play.google.com/store/apps/...SwxLDEsImNvbS5hZGR6Lm1lZGlhc2Nhbm5lcnJvb3QiXQ..
or
https://play.google.com/store/apps/details?id=com.addz.mediascanner&feature=more_from_developer
to stop the media scanner