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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28
votes
4answers
100k views

My device is getting slow, apps start misbehaving/crashing. What can I do?

Everything was working fine for a long time. But suddenly the device is getting slower than usual (e.g. apps react slowly when starting an action -- like the RSS reader takes "ages" to open an ...
22
votes
5answers
29k views

How can I deal with “Low on Space” messages on my Android?

I keep getting the "Low on Space: Application data space is low. To free up" [the rest is cut off] message. I've moved every app I can over to the SD card, cleared the cache, compacted my K9 mail ...
20
votes
3answers
3k views

Other than portability, are there any other advantages (or disadvantages) to storing apps on external storage?

Are there any particular advantages/disadvantages to storing apps on the external storage of an Android device? As I have a Nexus S, I can't think of advantages for me as I can't remove the storage, ...
20
votes
1answer
10k views

What are some general tips on improving overall performance of an Android phone?

I was wondering if anyone could share some general tips on speeding up/ improving performance of your phone. I have had my droid eris for about a year now and it seems more sluggish than ever. I ...
18
votes
5answers
8k views

Does moving apps to the SD card negatively affect performance?

Does moving an application to the SD card negatively influence I/O performance of the app or of Android in any way, in particular loading times?
16
votes
4answers
8k views

Factory reset to restore performance? What are the disadvantages?

tl;dr: What bad things will happen if I do a factory reset? So I've had this original Droid for about a year and a half. I love this phone, and if only I could get it to be a bit faster and have a ...
15
votes
4answers
32k views

How do RAM and processor speed affect overall performance on Android?

Since Android can be installed on wide range of devices, I'm wondering how important RAM and the CPU speed are to the performance of a device. There are always tradeoffs when something is increased ...
15
votes
8answers
21k views

Dialer app becoming too slow and less responsive

It takes almost more than 5-10 seconds to open the dialer application in my phone. This has been happening for a while now and is especially critical since during incoming calls, when my phone snaps ...
12
votes
2answers
2k views

How do I identify apps or settings that cause performance problems?

If I am having performance problems, what tools can I use to identify where my performance lags are coming from? I have used a System Panel Task Manager, Android System Info, System Manager Free and ...
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 ...
11
votes
2answers
4k views

Defragmenting my Android Phone

I just received an email from the vendor of a well known de-fragmentation software package suggesting I can make my phone go faster by plugging it into my PC and using the packages "consolidate free ...
9
votes
4answers
24k views

Why is my phone slow?

My phone has lately been really slow. When I turn on the screen, particularly if it has been off for a while, the phone is really sluggish. For example, it might take 30 seconds to respond to my ...
9
votes
3answers
6k views

Improve Android Emulator Performance on Windows 7 x64

I'm running Eclipse Helios on Windows 7 x64. I have a Core 2 Duo 2.0 Ghz with 4.0 GB which I think should be enough, since I've never have any performance problems with other developing tools. When I ...
9
votes
1answer
2k views

What are the pros/cons of using the JIT (Just-in-Time) compiler on an older phone?

On an older phone originally designed to run Android 1.5 or 1.6, what are the pros and cons of using a newer Android feature like the JIT compiler?
8
votes
2answers
4k views

What is /system/bin/mediaserver on Android, and why is it pegging the CPU?

I noticed that my Motorola Droid, running rooted 2.2 Froyo, has been acting sluggish sometimes. I fired up the terminal emulator, and ran top, and noticed that /system/bin/mediaserver is using around ...
7
votes
2answers
848 views

Faster CPU means higher battery consumption?

A friend of mine and I have the Samsung Galaxy Tab 10.1. His tab is flashed with a custom kernel giving 1.2Ghz instead of the 1Ghz I have by default. Using antutu benchmark, we saw what we expected, ...
7
votes
1answer
6k views

Are ROMs with deodexed programs faster or slower than odexed?

I am a bit confused by the effect of deodexing (or even by terminology). Based on answers to "What is the difference between odexed and deodexed roms?": A "deodexed" ROM is one where the .odex ...
7
votes
2answers
3k views

How to make camera start faster

Everyone knows that start Android camera sometimes is a pain, specially if you wish to take a picture of something that lasts only some seconds. What I want to know is: is there a way or an app that ...
7
votes
1answer
477 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 ...
6
votes
3answers
14k views

What is the effect of changing the maximum application VM heap size?

The settings menu in CM6 lets you change the maximum per-process heap size (internally, that’s the dalvik.vm.heapsize property). What are the practical effects of raising or lowering that setting? On ...
6
votes
2answers
948 views

Is the class rating of my MicroSD card relevant?

Does Class 4 perform differently from Class 6, and so on, when it comes to Micro SD(HC) memory cards on smartphones? Samsung Galaxy S to be specific.
6
votes
3answers
2k views

Picture Gallery Slow & Won't Refresh on HTC G2 w Android 2.3 Gingerbread

I'm having a problem with Picture Gallery not refreshing and loading too slowly on Android 2.3.4 Gingerbread (HTC G2). After I take a picture and then go to add it on foursquare or facebook from ...
6
votes
5answers
7k 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 ...
6
votes
3answers
2k views

Can I set it so the “Phone” on my phone takes priority over all other apps?

Every once in a while my phone gets very sluggish when I'm multitasking, which is annoying but fine. Is there any way for me to set it so that the Dialer app takes priority over everything else, ...
6
votes
1answer
2k views

Maximum (micro) SD card speed class for HTC EVO?

What is the maximum class (e.g., 2,4,6,8,10) supported of microSD card supported by the HTC EVO? I noticed an improvement in performance when upgrading from the Class 2 to a faster card on my Hero. ...
6
votes
1answer
858 views

Why does my phone slow down after using internet and installing apps?

I have Samsung Galaxy Y. I think that when I use wireless and installing apps, not immediately but after a while the phone slows down considerably. When it happens I must restart and when it turn on, ...
6
votes
1answer
4k views

Force GPU rendering in ICS. How does this affect system performance?

I thankfully discovered the option to force GPU rendering of apps in the system settings of ICS. So far, I did only notice a difference with one app: Twitter for Android was very annoying to use ...
5
votes
3answers
8k views

How to reduce number of screens on HTC Sense android phones?

I was wondering, is there a way to reduce the number of screens available with HTC sense phones to say 5? Just I find that 7 screens is excessive for my needs, and I heard I can get a decent ...
5
votes
2answers
263 views

Performance of Android 2.2 vs. earlier versions

One reason that I haven't switched to Android in the past is that it has seemed sluggish when I've tried phones that run it. I see that Google claims performance improvements of 4x to 5x over ...
5
votes
1answer
630 views

Performance gain from upgrading higher class SD card [duplicate]

Possible Duplicate: Is the class rating of my MicroSD card relevant? If you've upgraded the SD card on your phone to a higher class, have you measured or noticed any significant performance ...
5
votes
2answers
388 views

How to improve camera shooting responsiveness?

Is there a camera application (or other solution) that has quick response time between button press and taking the picture? On HTC Hero, the delay from button press to shutter is painfully long - ...
5
votes
1answer
839 views

Where to find Android benchmarks results?

I am looking for a site where to find Android benchmark results for the different smartphones and android builds.
5
votes
4answers
32k 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 ...
5
votes
4answers
3k 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 ...
4
votes
2answers
285 views

Regular maintenance to keep the phone running quickly and smoothly

I've noticed that over time my phone has slowed down and feels laggy and less responsive in general. In the same way you'd get your car serviced every year, what can you run to keep your phone ...
4
votes
1answer
692 views

How can I slow down my phone?

I know it seems like a silly question, but here is the situation: I'm debugging an app and my users have reported a bug on slow devices that I can't see on my fast device. Is there anything I can do ...
4
votes
3answers
21k 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 ...
4
votes
3answers
899 views

Troubleshoot/ Tune Android performance / speed

I have a Motorola Xoom (not rooted) and new to the Android world (at least as an advanced user). I've installed several (around 30) games + several (around 30) apps. I've noticed that it became a ...
4
votes
2answers
460 views

Do apps that claim to increase SD card performance really work? Strain on card?

I was recommended an app today that supposedly increases the r/w cache on the SD card. By default it's set to 128kb. I'd imagine this works in a similar fashion to a BufferedReader (in java). My ...
4
votes
3answers
2k views

Black screen starting an app

Occasionally I'll start an app only to be presented with the App's title bar and a black screen. Usually the app's interface shows after 3-10 seconds. Very rarely the screen will stay black. I don't ...
4
votes
2answers
1k views

Poor performance with portable wifi hot spot. Is this normal?

I'm using an HTC Desire HD to create a portable wifi hotspot on a 2G connection (yes, I know, but its all I got sometimes) so I can use my laptop for simple internet based tasks. My 2G connection on ...
3
votes
4answers
393 views

Is the Galaxy S II stable?

I am thinking about getting a Galaxy S2. It seems like a great phone, but I have some concerns about the system stability. I hear from Android users that Samsung's original ROM is very slow and heavy ...
3
votes
3answers
11k 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 ...
3
votes
3answers
3k views

How do I speed up media scanning?

When putting new music files or images onto the sd card of my android phone, android needs to scan for new files. Is there any way to speed up this process? E.g. putting all files in one directory? ...
3
votes
1answer
131 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 ...
3
votes
2answers
2k 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. ...
3
votes
1answer
207 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 ...
3
votes
1answer
342 views

How to log and visualize resource usage stats (to identify resource hogs)?

I want to be able to collect up to, say, a couple of day's worth of resource usage statics for my android, at the resolution of individual apps, and ordered according to their shares of the resource. ...
3
votes
1answer
183 views

Are there specific cases in which a task-killer or “fast reboot” program is helpful?

I know there have been previous questions regarding task killers, but I wanted to ask about two specific cases. I've heard a debate raging here and on several forums about Android's way of managing ...
3
votes
1answer
123 views

Are there good resources for comparing performance of Stock Motorola ROMs vs. CM7.1?

I'm looking for a good resource for which shows performance comparison - for Droid X - of Froyo 2.2 (stock ROM), Gingerbread 2.3 (Stock Verizon ROM) and any sort of Cyanogen ROM running on Droid X ...