Performance is characterized by the amount of useful work accomplished by a computer system compared to the time and resources used (Wikipedia).

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Why do US SIM cards slow down my Galaxy Note 3, and prevent system settings from opening?

I have a problem that seems specific to US SIM cards. They cause the performance of my Galaxy Note 3 to tank, and I can't get into the system settings at all, without rebooting my phone into safe ...
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0answers
9 views

big.LITTLE vs Turbo [on hold]

I realize this might not be the right forum for this question, but I do not know where else to ask. Feel free to move it to a more suitable site In personal computing usually you do not need a lot of ...
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3answers
33 views

What happens to CPU frequency when Android downloads a large file with screen off?

What happens to CPU frequency when Android downloads a large file with screen off? For example, I start downloading system update file and hit the power button to dim my screen...What happens to CPU? ...
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0answers
10 views

Find process causing io

I've been having some serious performance problems with my fairphone (wait times of 1 minute or more before apps open or switching apps, and general lack of responsiveness). I installed System ...
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0answers
15 views

can a phone detect 3D posture of a person with the camera?

Does an Android phone have everything it needs to reconstruct someone's posture, by using the camera sensors? If yes, are nowadays' phones fast enough for this? Here's a video of what I mean on the ...
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2answers
65 views

What does an android Launcher actually do?

Lets consider this scenario. I have a Samsung Galaxy smartphone which comes with Touchwiz as a default launcher. If I use a different launcher does it run on top of the touchwiz interface or does it ...
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0answers
12 views

how to profile system/low level apps?

I'm having a problem on the LG G2 where Swype and other swyping-type-keyboards are sometimes detecting multi-taps that are close together and occurring at the same moment as word-swypes/gestures. ...
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0answers
15 views

should (or shouldn't) I clean the ram when I closed all applications?

This might be a bit of a general question but nevertheless: Performance wise: should I, when I kill all apps (or some of them) also clear memory? I know that android keeps a stack of apps ...
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1answer
36 views

Android-System causes my smartphone to lag

The Process Àndroid-System causes my Smartphone to lag very often since it uses much CPU and drains my battery. Restart does not work. There is no other process using as much CPU. MediaServer seems ...
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42 views

Disable cores on android devices which have overheating problem

I have a multitude of android devices ranging from optimus one to one plus one .and mostly they have all been good choices , stable and good in performance .I have a redmi 1s currently which has ...
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1answer
47 views

HTC One internal storage performing very slowly

Using A1 SD, I can see that my HTC One (M7)'s 'internal SD card' (ie, the embedded storage) is incredibly slow compared to other benchmarks listed by anonymous users for the same phone. I'm only ...
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1answer
52 views

Touch lags in all apps, except keyboard

I've noticed a delay of about a quarter of a second between tapping the screen and the app responding. Thud happens in all apps - it's most obvious in the game "aa", a fast, reflex-based game which is ...
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1answer
141 views

Android Low Memory: How to do factory reset of my phone when it won't open anything

My Android phone is constantly giving me a "Low Memory" error on the top of the screen. I would like to uninstall intensive apps or even do a factory reset (following online tutorials), but even if I ...
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1answer
63 views

SD Maid on Rooted Roger's Galaxy S3 hanging on “System Cleanup” and “Duplicate”

My phone is a rooted Canadian Samsung Galaxy S3 (SGH-I747M) running stock 4.4.2. I've had SD Maid installed for a very long time and it's worked great up until now. I've never had any issues with it. ...
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1answer
291 views

How can I maintain stable/smooth performance permanently on a Nexus 7 2012 (wifi) [grouper/nakasi]?

After a day to a few days, the n7's performance will degrade sharply to the point where a reboot is necessary for the device to function properly. I've tried numerous ROMs, a few kernels, tweaking ...
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1answer
336 views

Is kernel samepage merging safe?

In the performance section of android 4.4.4 Oneplus one i saw kernel samepage merging . i want to know is it safe ? as when i entered the performance section it gave warning that these setting are ...
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0answers
12 views

Messaging doesn't scale well

About a year into owning each Android, my messaging starts to slow to a crawl. 10 second hangs, etc... This has happened with every messaging app I've ever used. My first question is: What causes ...
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0answers
160 views

Text messaging so slow it is nearly unusable

I have a Galaxy S5 running 4.4.2. I am trying to send a text message to a certain contact. When I select their name from the list of messages, there is a 30 second delay. While typing, sometimes ...
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0answers
35 views

Motorola Droid 3 slows down after 2 years

I was using Motorola Droid 3 for about 2 years and when I just bought it, it was very fast and worked without any lags. Now it is very slow, although it is running MiniMoto firmware instead of stock ...
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0answers
101 views

create intentionally high cpu load with ADB command

I am testing my app for its performance under load. I would like to observe my app running with a minimum of other processes running and then while it is competing with other processes for CPU. is ...
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0answers
225 views

What can be possibly slowing down my phone? [closed]

I currently have a Samsung Galaxy S3. As the title says, the phone has slowed quite a bit. And by a bit I mean a lot. It has gotten to a point where sometimes I cannot even unlock the screen because ...
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1answer
9k views

Sony Xperia E1 D2005 Custom Recovery&CustomROM Flashing?

I want to flash a custom ROM and install custom recovery; but when I enter ROMmanager (my device is rooted) and try to install CRW or TWRP it says "custom recovery does not support D2005 (sony xperia ...
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1answer
156 views

Moto G 2014: Maximum upload speed?

According to specs the 2nd gen. Moto G has network support for: GSM/GPRS/EDGE (850, 900, 1800, 1900 MHz) UMTS/HSPA+ up to 21 Mbps (850, 1700 (AWS), 1900 MHz) What's the actual maximum upload speed?
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1answer
4k views

Improve scrolling lag in Android

I am not referring to the App opening/closing animations (that can be modified in the launcher or the Developer Options changing the animation scale) but the actual scrolling of websites, webviews, ...
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1answer
115 views

Video and game lags after rooting S3

I recently rooted my phone, and am now using Paranoid and I love it. However, whenever I play videos and games it lags really noticeably. This never happened before I rooted my phone. I'm using ...
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0answers
508 views

Slow home screen load, applications restarting

The problem has a few symptoms. 1) Whenever I return to the home screen it takes a few seconds to redraw. 2) Most applications restart when I switch back and forth between them. 3) If I go to the ...
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1answer
79 views

Impact of android version on phone performance

I pondering whether I should upgrade my Android system, or stick to my current one. Is there any reference website that would list Android devices and see how different Android versions compare in ...
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0answers
222 views

Analyse performance / profile Android System? Why is the system slow?

My Android 4.2.1 tablet is slow, it wasn’t when purchased. As the reason is often the software, I was looking for a tool to analyse the performance of the whole system, but couldn’t find any. What I ...
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1answer
82 views

Can i read the RAM and CPU usage of other applications-Android

I want to know whether is it possible to monitor the CPU, RAM, Network and Battery usage of each and every application installed in my device through my application dynamically? Does Android's ...
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0answers
898 views

Very specific Asus MeMO Pad HD 7 Wi-Fi problem

I've got a fairly odd problem and have not been able to find a solution for months... I have n Asus MeMO pad HD 7 (ME173X) running Android 4.2.2 which usually does just fine connecting to Wi-fi to ...
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0answers
203 views

Android extremely slow when USB Debugging

Whenever my android device is plugged into my computer with USB Debugging enabled, it (the entire device: all apps, etc.) becomes extremely slow. I need USB Debugging enabled to install and debug ...
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2answers
700 views

Will installing Cyanogenmod speed up my Galaxy S?

I recently purchased a used Samsung Galaxy S Captivate. While it seems fine for my purposes, it would be nice if it were just a bit faster, in terms of loading different pages more quickly. From what ...
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2answers
10k views

How to make rooted android phone faster and avoid battery drain

I have rooted by Samsung S dous s7562 (645 RAM single core 1ghz processor)phone using Kingo Android root desktop App. I decided to root my phone as it was very slow . I have already done the ...
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81 views

Does Android indeed need defragment?

I have recently format(not just wiping) userdata partition on Note 2 N7100 and Tab 7.7 P6800. I also restore /data using nandroid and restore internal sdcard by manually copying files. I notice that ...
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1answer
2k views

Dialer is very slow between dialing the number and getting into the call: spinning wheel for 5-10 seconds

I have a Nexus 4 with CM (latest version). For the last few months whenever I dial a number it takes anywhere from 5-10 seconds for the actual call to start. I checked Android SE and didn't find ...
2
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0answers
407 views

LG G2 getting sluggier by the day

I'm not sure if this is specific to this model or not, but I am having troubles understanding how four cores of over 2GHz can perform so miserably slow. During the last few days, it's gotten to the ...
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1answer
217 views

How to meausre GPU performance in different Custom ROMs

I plan to compare the GPU performance of different GPU powerscale policies. GPU powerscale policies are found under /drivers/msm/gpu/msm[or any other chipset name]/kgsl_pwrscale_XXXX.c under the ...
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1answer
356 views

How to uninstall Android upgrade

I was asked by my Galaxy Grand to update. It was a 608 MB build update. After done , now I got Android Jelly-bean 4.2.2 . It is making my phone very slow and uses too much phone memory. Want to ...
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1answer
140 views

Developing applications under Cyanogenmod? How compatible to vanila Android? (Nexus devices)

If I am to develop (and test) my application under Cyanongenmod (base install, without any additional changes), how confident can I be that I would see similar performance of my application on the ...
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1answer
54 views

Poor Performance at Low Battery

I'm having an issue where my phone gets sluggish and non-responsive when the battery level gets to around 35% or less. Apps will freeze, it will take the keyboard a long time to appear, and the ...
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1answer
275 views

why smartphones become laggey and slow with time? [duplicate]

I found a lot of info about how to make my smartphone faster but I couldn't find the reason for smartphones lowliness. I found that you should move apps to SD Card (if you have one) Don't use a lot ...
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0answers
2k views

What is filling my phone's RAM, if not apps?

My Galaxy S3 has gone from snappy to slow over the past few weeks: When I open or change apps it reacts very slowly. When the app is running that app is working fine. It resembles having too little ...
0
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1answer
341 views

Scala and ART, android runtime

I understand that Dalvik has a just-in-time compiler. The android team is making ART, android runtime, which has an ahead-of-time compiler. Effectively using Scala can increase code execution time ...
2
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2answers
42 views

Apps spamming my log

I've been looking at my log recently for more development of android applications, and I've noticed my log is spammed with all sorts of information that I wouldn't considered needed to be logged. ...
1
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1answer
4k views

Samsung Note 2 slow down

I find my note 2 is getting slower and slower after using it for 1 year. Is there anything I can do to make my phone run normally/faster. It looks like the memory is approaching to the max usage. Is ...
0
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1answer
32 views

Phone is lagging

Some apps lag on my phone. For example, Chrome, Opera Beta. But other apps are working quite normal. I noticed that these apps redraw almost all screen, so I believe this is somehow related to ...
2
votes
1answer
459 views

How big of a speed difference will be noticed with a 100-200 MHz overclock?

I am going to overclock my 600 MHz to around 700-800+. Nothing too big of a jump, and don't need any help either. The question I'm concerned about is what kind of performance does this slight speed ...
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0answers
663 views

Why is the screen rotation slow and freezing the screen?

I have a Samsung Galaxy note 10.1, and the screen rotation before was noticeably quicker. It just recently started to take another second or two to rotate. On top of that, everything on screen will ...
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4answers
12k views

very slow performance of Galaxy Grand 4.2.2

After the new update of 4.2.2 on Feb 6,2014 my phone performs very very slow.. cant even run a single application.. cant even pick up the call as the screen remains blank... Smart phone has become ...
6
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4answers
23k views

Are there any downsides or risks to limiting background processes?

I enabled developer options on my Samsung Galaxy Grand Duos and then changed "Limit background process" option from Standard limit to No background process. After that my phone is working fine, with ...