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Closed 7 years ago.
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I have added the file /Users/Jim/Library/Preferences/AndroidStudio/studio.vmoptions
With the following:
-Xms2048m
-Xmx4096m
-XX:MaxPermSize=350m
-XX:ReservedCodeCacheSize=96m
-XX:+UseCompressedOops
I am not seeing a dramatic performance difference from the default. How do I know if these options are being used? Also are the rest of the options (premises and reservedcodechache) reasonable or too low?
Unfortunately it is not possible to achieve a dramatic performance improvement for Android Studio by changing the VM options. If it was possible at all, then the developers of Android Studio would have included those options in the default distribution - no one likes to waste an opportunity to make their product faster.
If there are specific areas where you see inadequate performance, you're welcome to report performance problems to Google or JetBrains, and usually there are workarounds or ways to help. But in general, the only way to make such a product very fast is to get a very fast computer.
To see how much memory is actually being used by Android Studio and how much is available, you can enable the memory usage indicator using Settings | Appearance | [x] Show memory monitor.
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Closed 6 years ago.
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I'm trying to use an applet to recovery some old data on a 3rd party site that i wished to keep. I see that nowadays all browser that i know force java plugin to be unavailable, is there some technical workaround to allow current and future applet execution for the sake of data migration? i looked into Lobo browser and JWebPane but to no avail
Don't know about modern browser compatibility. You should still be able to use and older version of a compatible browser - I'd just be extra carefull as security fixes would obviously be absent.
This post might old some good infos on the subject: https://superuser.com/questions/999778/when-firefox-drops-java-applet-support-how-will-i-run-old-java-applets
However, keep in mind that the very existence of the applet plugin will cease with Java 9. I'd hurry to find a more futur-proof solution.
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Closed 6 years ago.
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What OS do they use for example and how to they boot up so quickly (compared to a raspberry pi)?
Currently, they are two option existing:
they are running a custom piece of software that support a jvm
they are running a minimum version of a linux , just what's enough to run the jvm, everything else is disabled / removed.
It's booting that fast because it has only the piece of code needed to run a minimal jvm, and everything else is disabled in opposition of the raspberry pi who has a complete kernel, with a lot of modules, a desktop environment, etc, ... to load.
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Closed 8 years ago.
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How can I create JVM with fewer cpu and ram (resources) and give other access to it, while also ensuring that they cannot manipulate or view files or data of my system?
I want to create a web interface java compiler which everyone can use and would not like if other can manipulate my system.
If you use VirtualBox or another VM you can
choose the OS, it doesn't have to be the same.
choose all the files it can see
choose how much CPUs and memory it can use.
make it hard to break out of the virtual host and into the real host.
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Closed 8 years ago.
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I am new to android development. I want to download sdk tools for eclipse ide. How much disk space will it take to install all sdk tools? And what are the important tools to download, in case downloading all will take huge amount of time and memory?
The ADT bundle (tailored Eclipse with SDK, tools, etc.) comes in a 528 Mb zip file. I think is a good idea to download it complete if you are new to Android (and have space enough), instead of picking pieces of it here and there...
you can just check out the sizes for different files in a version.
See, http://completefaq.blogspot.com/2013/08/how-to-install-android-apis-on-myself.html
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I have 2 Jetty servers with the same problem,
The Jetty web app gets "freeze" every couple of hours.
(Freeze means that the console is not doing anything/unable to receive new requests)
During the "Freeze" I noticed that the JVM is using more swap than it usually does.
It seems like sort of a memory leak, even tough the system has enough memory.
I run the JVM with those run parameters:
-Xms8000m -Xmx280000m
Those are the RAM graphs (blank lines are what I called "freeze"):
See reference number 1 below
I also noticed the the garbage collector is not running very frequent.
Maybe it is related?
See reference number 2 below
I'd appreciate any input regarding a proper use of the garbage collector and any other ideas that would help resolve it
This is a spring/Hibernate based Application.
http://i.stack.imgur.com/VGOkM.jpg
http://i.stack.imgur.com/eI1mt.jpg