In this post ,I am going to share some of the interesting facts about Android platform which was discussed in an introductory session conducted by worldlink at le meridian,Bangalore.
- Though Android platform is basically for mobile phones it has been successfully implemented in various other devices such as E-book Readers,Navigators and Netbooks.
- Android runs on Dalvic Virtual Machine,which is a register based virtual machine developed by google , unlike the usual one which is stack based.
- Android requires high-end hardware i.e a minimum of 400Mhz processing power and 128MB RAM and efforts are made to minimize high-end hardware dependency.
- Every App on android has memory isolation,so ensures high reliability.
- On Android every application has its own Virtual Machine.
- Did you know? A standard linux kernel supports 65k user ids.In Android every app has its own user id.
- ARM is RISC based CPU
- There are actually 2 reasons why Register-based Virtual Machine was used for Android.
- Register-Based Virtual Machines can be mapped well to RISC based CPUs.
- Using Stack-Based Virtual Machine for Android would have violated patents of Sun Microsystems( as told by the speaker)
Issues:
- Currently ,no debuggers are available for native libraries.
- Noticeable performance lag .apps take more than a second to start after they are activated.(Latency in Starting Applications inspite of Ghz processing power,clearly evident on Nexus One)
- User Experience is not on par with other devices such as blackberry.
- No HotKey Support.
- No Performance Measure Tools as of now.
- No JIT in Dalvik VM. (Register based RISC like instruction set (x86 types))
Android runs on top of linux.Friends If You Enjoyed This Post Please Take 5 Seconds To Share It.
