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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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 ...
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1answer
371 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 ...
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2answers
51 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. ...
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1answer
5k 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 ...
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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
510 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
692 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
13k 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 ...
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5answers
28k 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 ...
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1answer
5k views

Are there technical reasons why Android is not as smooth as iOS and can they be overcome? [closed]

There are some discussions of this topic on the internet but I'm looking for something objective and technical like the Stack Exchange community is generally quite good at. I've resisted the ...
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1answer
324 views

Why are there a ton of Logcat processes slowing down phone?

I noticed a major slowdown on 2.2.2 Android, and it looks as though it's caused by too many logcat processes. With adb shell, I ran ps | wc -l and there were about 400 processes, after running killall ...
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0answers
727 views

Android TOP command CPU usage

I'm running a simple command line audio processing program in a shell on my Nexus 10 (Android 4.4.2), and want it to consume 100% CPU while it runs. The reason being, if I know it used 100% CPU, I can ...
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1answer
1k views

Improving performance of YouTube app

I have a Galaxy Tab 10.1 (a.k.a. p4, P7500), running Android 4.2.2 rooted (latest CyanogenMod nightly build: 10.1-20131208-NIGHTLY-p4) and YouTube v5.3.28. Does anyone have an idea how to improve the ...
0
votes
1answer
489 views

Will flashing a custom fix lag on my Android?

I have a 1 GB RAM tablet running a pretty much vanilla Android Jelly Bean 4.1.1 and it's been running very slow. Apps startup time have been slow, noticeable lag exists while scrolling between the ...
0
votes
1answer
1k views

Android lag issues in Galaxy S3?

I know I have previously asked a similar question and I am asking again : why does my Galaxy S3 lag when doing routine tasks ? When pressing HOME button , the screen is supposed to smoothly fade ...
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3answers
11k views

Samsung Galaxy Grand Running Slowly After Upgrading to Android 4.2.2

I am using a Samsung Galaxy Grand for 8 months now, which was originally running Android 4.1.2 Jelly Bean. Recently I got a Firmware Update and upgraded my mobile to Android 4.2.2. After this update, ...
2
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0answers
920 views

Explain the ondemand CPUFreq governor parameters in SAMSUNG galaxy S4?

I am trying to understand how does the onDemand CPUFreq governor works. I have a SAMSUNG S4 device and I looked into the following file to see the tuneable parameters of SAMSUNG Glaxy S4 GT-i9505 ...
0
votes
2answers
104 views

Are running apps slowing down Android phones?

When my phone (Xperia J) is getting slow I'll go to Setting→Apps, select running apps, and delete everything in there. Then I go back to the homescreen and I notice that my phone is faster. So is ...
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2answers
10k views

Galaxy Note is getting slower and less responsive [duplicate]

I've had my Galaxy Note about 18 months. It's progressively getting slower and slower to respond to user input. Any tap has an unpredictable delay, up to a few seconds. Even typing has a noticeable ...
0
votes
1answer
203 views

Can Anti-virus affect device performance?

I have installed some anti-viruses on my device, and since then I am feeling that the performance of the device is quite slow, and when I uninstall them the device works fine, and the device starts ...
3
votes
1answer
241 views

Why a phone gets slower as time passes?

I did a hard-reset, wiped everything everywhere, reinstalled firmware and changed SD card. However, the phone still works extremely slowly, not as when it was bought. What can wear out in phone? Inner ...
2
votes
0answers
624 views

HTC desire x issues after update to Android 4.1 Sense 4+

Ever since I installed the update to 4.1 I've been having major issues with my desire x. The keyboard disappears frequently while typing, sometimes I can't get it back without closing the app and ...
3
votes
1answer
151 views

How do I know if an Android tablet supports Project Butter?

As far as I know, Project Butter is just shorthand for versions of Android OS that have quicker touch screen response, close to the "physicalness" of iOS devices. But how do I know if a particular ...
7
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1answer
551 views

Performance impact of device encryption

As far as I know, most or all Android devices don't have any hardware cryptography accelerators, so the block-level storage encryption happens on the CPU. How high is the impact of encrypting and ...
0
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1answer
2k views

Improving HTC Sensation XE somehow

I have an HTC Sensation XE and the smartphone is becoming slower and worse every day, expecially compared to my Nexus 7 and Samsung Tab 2. Android on the phone is slow and lagged ( I have to wait ...
2
votes
0answers
13k views

Android on Samsung Galaxy Duos is too slow [closed]

I've bought a Samsung Galaxy Duos GT-S7562 with Android 4.0.4 3 months ago. The phone is so slow and getting slower by the ay, it has become almost useless. For instance, to look up and call a contact ...
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2answers
4k views

Force Trim an Android Device

With 4.3 endabling the support for trim (though I read that it was present since the first JB). I was wondering if there is a way for me to force trim on my device? Is there an app that I can sideload ...
2
votes
0answers
260 views

TRIM command operability in Android 4.3

Has anyone been able to confirm the usage and operability of the fstrim (TRIM) functionality in the latest Android 4.3 (Jelly Bean) release? I have seen multiple articles mention the operability of ...
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votes
4answers
63k views

Change the speed of games in Android / SpeedHack for Android

Is there a way to slow down / speed up the actual game speed? For Windows PC, there is the Cheat Engine SpeedHack that does it nicely. Is there anything (requiring root or not) to achieve similar ...
3
votes
0answers
10k views

Why is my Xperia U slow? [closed]

I have a Sony Xperia U running Android 4.0.4 ICS. The problem is that it runs really slowly. It is particularly bad while multi-tasking. While listening to music, if I get a phone call, it hangs. ...
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0answers
7k views

HTC One V really slow

I bought my HTC One V exactly one year ago, at first everything went really smoothly and it worked like a charm. It didn't take long before the phone crashed from an unexpected error. The phone spent ...
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0answers
18 views

How to optimize my Rooted desire bravo for gaming? [duplicate]

Presently using the Runnymede AIO V6.0.4.3 Special Edition [Stable] Tried Cyanogenmode-7.2 Stable But I am finding great lag in performance when playing games. Such as Angry Gran, Temple run, ...
2
votes
0answers
135 views

Do Android devices become slower with time?

I own a Galaxy S (2.3.5 / GT-I9000 / BVJV3) and use it since two and a half years. I also have bought more recent hardware, like an iPad Mini and a more recent Android tablet, which comparatively are ...
2
votes
2answers
237 views

Huawei G300 not fast enough for Google Racer

So on my Nexus 7 (currently clocked at 1300mb RAM) Google Racer works fine. However, when I use it on my Huawei Ascend G300 (only clocked at ~30mb less RAM) it says it is too slow. This doesn't ...
3
votes
1answer
7k views

Phone becomes slow after updating to Jelly Bean

My Samsung Galaxy Note-1 becomes very slow after updating it to Jelly bean...what should I do??? Please can any body help me??
3
votes
1answer
1k views

Android 4.0.3 sluggish: nandd process hogging CPU

I have an Allwinner A10 tablet clone. While working the tablet "freezes" regularly but not too frequently for a strech of time between 2 and 15 seconds. Described differently: the tablet is useable ...
1
vote
0answers
1k views

My OS and phone freeze and lag every time the blue “Show CPU Usage” bar appears. What is it?

Lately, I've been experiencing the very unpleasant phenomenon of my almost new S3 completely locking up and stopping responding to input. It's like a very serious lag that has to either be waited out, ...
12
votes
1answer
1k views

How to speed up Android during bootup time?

I'm looking at the bootup time of Android on my embedded device and I'm trying to get a sense for where I can save some time. 1) What are some things that you've done to really help speed up the ...
5
votes
3answers
27k views

Why does my Android device slow down after successive ROM updates without wiping?

I have a 32 GB Verizon Galaxy Nexus (toro). I am running Cyanogenmod 10.1 ROM nightlies and I use CyanDelta Updater to stay up to date. For a period of about 3 weeks, I updated to the latest nightly ...
6
votes
4answers
7k views

How can I find which app slows down my phone?

I have a Samsung Galaxy S3. My phone is becoming slow. I don't know how to find the app that slows it down. Can someone help me with this? My guess that the app is FACEBOOK... worst app ever. After ...
2
votes
0answers
3k views

Samsung Galaxy S has become very slow

My phone recently has begun to become very slow. At certain times of the day, the phone will completely stop working and will have to be turned off by holding the power button. Sometimes, the lock ...
2
votes
1answer
504 views

MicroSD card performance during boot

I have a Nook HD+ and a Nook HD. When I ran CyanogenMod off of a MicroSD card, the Class I (43MB/s) doesn't even boot! I spent $30 on a 32GB one. The Class 10 (10MB/s) 16GB booted, but ran poorly ...
1
vote
1answer
872 views

Why My android device show less RAM and Slow at Jelly bean? [duplicate]

I bought a new Samsung galaxy S Advance(GT-i9070). It came with Gingerbread. It was actually a phone with 768 RAM. I clearly verified this with the shop when I bought it. Last day I upgraded my phone ...
2
votes
2answers
11k views

Is 512 MB RAM Really Enough for Android ICS? [closed]

(Background: I never use ICS Phone, so i want to ask about performance) Some of Android ICS Phone (e.g. Xperia J, Xperia Sola) has 512 MB RAM. How about performance of Android ICS Phone with that ...
2
votes
1answer
2k views

Nexus 10 handwriting apps always lag

So I just bought a nexus 10 and among the many reasons for getting one, I want to take notes with it. I've bought myself a nice stylus that works wonderfully on iPads and my galaxy nexus phone. ...
2
votes
2answers
3k views

Galaxy S GT-I9000 is slow

My GT-I9000 takes ages to come "alive" after powering up. It has been slow for a while, but now it has gotten even slower, anything up to 10 minutes sometimes. When it activates, everything works ...
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votes
2answers
3k views

galaxy s2 cellphone problem; possible virus

I read that it is used on the computer. It has been coming up on my Android Galaxy 2 s. It is on at least 3 times at once and up to 7 or 8 at once. They are called kworker/0:1 through kworker/0:4 ...
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votes
5answers
8k views

Nexus 7 Incredibly Slow

Over the past few weeks, my Nexus 7 running 4.2 Jelly Bean has gotten incredibly slow at times. Sometimes I can count off a full five (or more) seconds for an app to open or even for something as ...
3
votes
2answers
3k views

Do widgets slow down Android phone?

I use a lot of widgets (like Gmail, calender, weather app, Facebook, music, news, etc.) and since I have been using them I feel my mobile has become slower than before. I don't use a task manager. ...
0
votes
1answer
910 views

High CPU usage from UEventObserver and inputmethod.latin (Nexus S)

I have kept my Google Nexus S up to date with the latest Android O/S since I've owned it and its always had performance problems to varying degrees. I'm currently running: Android version: 4.1.2 ...