Android :: How To Speed Up Emulator?
Aug 27, 2009
I have just started with development and would like to ask if Android's QEMU emulator uses any type of hardware acceleration.I made a simple Android program that extends the WebView activity and loads a webpage at start.That's all it does.It takes 35 seconds to cold start the emulator and acitivity from the Eclipse IDE. It takes 12 seconds to reload the acitivity when emulator is already up & running.Do you think these numbers are normal? Is there any possibility to speed up the emulation speed of QEMU?I can try to answer to this question myself. In the past, I used QEMU with KQEMU kernel module that remarkably boosted the emulation speed on X86 hardware. But Android runs on ARM CPU (not Intel or AMD CPU), so KQEMU module cannot be used here.My PC is Intel Core 2 Duo E6850 3.00GHz. 4GB RAM. Running Eclipse IDE 3.5 (Galileo) on 64 bit Ubuntu Linux 9.04.
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May 23, 2010
Is there a way to simulate speed on Android emulator?
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Jan 5, 2010
i was disappointed that the boot speed of the android emulator was more slower than my peer. of course, the spec was identical, his os was Win7 but my os was XPSP2.how can it be possible?is there any one who knows the way boosts the speed of android emulator?
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Feb 22, 2010
The internet browser works very slowly inside the emulator for Android 2.1 AVD.I tried using -netfast switch also while launching the emulator, but it doesnt help much.The same websites when i open in my Browser from my desktop , it opens very fast, and the same website inside emulator opens very slowly. Also i get only 2 towers on the network strength indicator in my emulator.Is there any way to improve the network signal inside the emulator?I have also noticed that emulator would get the network only if i am connected to the internet, else it gives no signal I am trying to simulate a very simple sms message sending and receving between two instances of emulators opened on 2 AVD.The message sending is successful only if my internet connection is on before i launch the emulator, else it gives no Service and message is not sent.I have noticed that a DNS SERVER NOT FOUND warning comes if i try to launch the emulator with my internet connection switched off.
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Jul 15, 2009
Android SDK startup takes more than 2 minutes. is there a way to start the emulator faster with any special parameters.
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May 6, 2012
So I've been developing some stuff here and there for Android, and I noticed my device emulator has a RIDICULOUSLY low connection speed. I'm not talking about performance which is fine, I'm talking just about 'network speed'. What it means is that transferring files to and from the AVD using ADB (which as you may know relies on networking protocols) is EXTREMELY slow, and what's worse, internet transfers are VERY very slow. Therefore, when I'm working with online content (which my app, and let's face it - most apps are about) it's EXTREMELY slow.
It's worth mentioning that those same apps work great and about ten times faster on an actual android device.
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Apr 14, 2009
Why is pc android emulator slower than real device but mac IPhone emulator faster than real device? I can understand the latter but not the former!
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Feb 22, 2010
I'm trying out the network speed emulation as described in the following link: http://developer.android.com/guide/developing/tools/emulator.html#net...
But is doesn't work, although "network status" command shows the correct values... I know it doesn't work by writing code to monitor the eth0 device in /proc/self/dev/dev, whatever speed I set, it seems always use maximum speed available to the host machine.
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Aug 6, 2010
I created a sqlite database to store playlists for a media player I am developing because of extended feature (rather than using the Content Provider). It works perfectly on the 1.6 emulator but FCs on anything higher than 2.0... what has changed that I need to know about as far as opening databases in SDK 2.0+? Here is the logcat.
CODE:.............
Here is the dbhelper class
CODE:................
why can't stackoverflow just use tags like a normal syntax highlighter.
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May 19, 2009
Unable to play youtube videos on SDK 1.5 emulator - but playing well on SDK 1.0 emulator. Can you update the source....
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Apr 13, 2010
Finally strace gave me this:
CODE:................
And several other attempts to call "link" that also fail (sshfs does not support hard links).
Is it possible to change the emulator's behavior to create lock files somewhere in /tmp (using some hash of image path as lock file name)? I am OK to try this myself: which repositories from https://android.git.kernel.org/ are necessary to rebuild the emulator alone, and where in the sources is the code responsible for image locks?
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Apr 20, 2009
I need to run several emulator instances to test my application. When i try to run instances using emulator -data <path> option, the emulator crashes.
I got a MS Visual Studio window informing that emulator throws a "unhandled win32 exception".
The exception message in the debugger (MS Visual Studio 2008) is: "Unhandled exception at 0x77c4706c in emulator.exe: 0xC0000005: Access violation reading location 0x03216848"
The emulator runs normally without "-data" option.
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Nov 1, 2010
I am getting the following error when I try running my program in the emulator:
emulator: ERROR: the user data image is used by another emulator. aborting`
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Apr 8, 2009
Is there a way to reload an Android application in the emulator without closing the emulator, saving any code changes, and running the emulator again? If I make even a simple change to the layout, it takes about 30 seconds by time I run it in Eclipse and Android "boots", and I can unlock the emulator to run the application. Is there any way to shorten this time when making changes, or is it something I just have to deal with?
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Mar 16, 2010
I downloaded the most recent version of Android for linux (android-sdk_r05-linux_86.tgz). I was trying to use the the Android Ant task(s) for packaging, building, and deploying my code. I should mention that I'm running AMD64, but have the 32-bit libraries installed. The Android Ant tasks are all broken.
First, the start-emulator task never gets the emulator running. It does get past starting adb, but then just sits there.
Second, the SDK is missing the aapt binary in the tools directory. So, the example notepad sample application will not even package correctly.
I have all the dependencies configured for Android. I can run it from the command line just fine.I assume the Ant code is out of sync with the recent SDK updates. Can anyone shed some light on this problem? At this point, I'm considering writing my own Python scripts to interact with the Android SDK. Ugh.
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Sep 24, 2010
In my dummy application i want to send MMS. But i don't know how to check it.I know that we can send SMS from one emulator to another but, is it possible for MMS? If yes then how it can be done.
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Feb 10, 2010
I intend to use the Android Emulator to send/receive SMS. I send SMS to the emulator using the sms send command. I'm aware of emulators being able to converse with each other over SMS but would it possible to receive that the SMS reply sent from an Android Emulator on a external TCP port?
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Jul 21, 2009
I have a static background image, and a foreground that needs to be animated. I tried a couple different approaches but the animation seemed choppy. One thing I did was having 2 different views, constantly calling invalidate() on the foreground view. Another was to have only 1 surfaceview, redrawing the background image and the foreground on each step of the animation.
While a surfaceview offers an optimal way to do heavy-duty animation, having to redraw the background every time kills the performance. Neither produced a smooth animation. What is the best way to perform this kind of animation - static background and animated foreground?
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Jun 5, 2010
Is there a way of getting the speed at which the device is running?
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Oct 6, 2010
Maybe I missed it, but when I am using the google maps app, I don't see any indication of the speed I'm making over the ground. Am I just missing this or, if not, is there a GPS app that shows speed over the ground while using the GPS?
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Nov 27, 2009
I have a DROID eris HTC and there are only 9 speed dials. My antique LG would let me use any number for a speed dial even if it was two digits. It came in handy as each person was assigned his or her birthdate. Now with my high tech phone I only have 9? Please tell me there's a way. There must be seeing as 86 is speed dial.
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Sep 26, 2010
so I've been waiting for 4G in minnesota for a while now for my epic. They haven't announced it yet but. They've been. Tinkering with the towers lately and I've been seeing sme 4G coverage here are my mobile speed test results I was surprised considering I've been reading about people saying its more like 3 and a half G with speeds not much greater than 3G I realize however that right now there's almost 0 congestion and bandwith will slow considerably however the froyo update should even that out So what are your speeds?
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Jul 21, 2010
I have 40 MB file in server and i am downloading my file using
HttpURLConnection c = (HttpURLConnection) u.openConnection();
c.setRequestMethod("GET");
c.setDoOutput(true);
c.connect();
FileOutputStream f = new FileOutputStream(new File("trips.xml"));
InputStream in = c.getInputStream();
byte[] buffer = new byte[1024];
int len1 = 0;
while ( (len1 = in.read(buffer)) != -1 ) {
f.write(buffer,0, len1);
this code seems working fine but it is taking too long. is their any way I can make this process faster.
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Oct 13, 2009
Is there a way to determine connection speed? E.g. EDGE, 3G, etc.? I already know NetworkInfo.getType() will tell me Wifi or Mobile. I'm looking at Is this NetworkInfo.getSubtypeName(), but the function is undocumented.
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Mar 30, 2009
Currently, attempting to scroll when the text view has large amount of text makes the app completely unresponsive. It doesn't ANR, but it doesn't respond either. I've tried occasionally removing some text from the text view and removing some spans also, but it doesn't seem to help much. Any idea how to improve scrolling? It takes ages to scroll up or down. I also tried throttling touch events but it hasn't helped either.
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Apr 24, 2009
Get scroll speed of Listview, Ivan Soto Fernandez Web Developer
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Apr 20, 2010
Apparently auto focus in a phone camera isn't all it's hyped up to be. To get faster performance (the time from pressing the shutter button to the picture being taken is usually slowed down by the camera trying to find focus in autofocus mode (and sometimes missing completely and giving up if the subject is dark or lack contrast). I'm not sure about all Android phones, but my Acer Liquid has a focus setting either 'infinity' or 'auto'. From what what I understand about photography, on a small lens such as on a camera phone, the DOF (Depth of Field) is very large, and when the focus is set to the hyperfocal length (the 'infinity' setting), everything from infinity to about 2.5 ft is in focus. I confirmed this with my phone (set focus to infinity, see what the closest thing that's in focus). So what this really means is for almost all regular picture-taking, it should be set to 'infinity' for faster performance, and only set to 'auto' when one needs to take pictures of objects closer than about 2.5 ft, like a 'macro' mode. So it would've actually made more sense if Android Camera app were to label the two settings '0-2.5 ft auto focus' and 2.5-infinity fixed focus'. If your camera has this setting, give it a try and see if it's snappier.
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May 12, 2010
Is there an app that i can download that shows my processor speed? I have seen them on phones that have been rooted and overclocked, but never seen one for stock.I am on a Motorola Droid running stock 2.1-update 1. I dont want to hear "just root and overclock." If anyone knows of an app or tool that will show this.
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Sep 29, 2010
HTC G2 appearance wise look like the Nexus 2, but hardware it's a different beast. i just saw this HSPA+ result from android central and i cant believe. T-mobile might have the worst coverage, but where i live, it's pretty damage good and comparable to Sprint 4G. But seeing this, it totally blew my mind away. Is it possible??
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Dec 15, 2009
Anyone know of an audio player that will speed up the playback? It would be nice if it could keep the pitch the same but sped up is the goal. I used TCPMP on the Treo. This is great for listening to podcasts in a fraction of the time. Depending on the original audio, I can generally make everything out up to +25%.
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