How KVM (Kilo Virtual Machine) different from JVM(Java Virtual Machine) ?

Question

I have basic idea on Kilo Virtual Machine on Mobiles , I have clear idea of how JVM works class loaders , Executable Engine,Method Area etc .

• Technically how KVM differs from JVM ?

• Does KVM increases the execution time as compared to JVM ?

• Any Performance Oriented difference ?

• Memory management

Thanks !

Answer 1

The KVM doesn't perform class unloading and doesn't support custom class loaders.

The official Sun Ltd KVM only supports CLDC 1.0 and therefore does contain API-level bugs that were only fixed in CLDC 1.1.

The focus of the requirements when developing the KVM was on memory footprint so you can expect performance trade-offs to increase cpu usage (i.e. less buffering...).

Thread scheduling is slightly different but it's nothing that would impact Thread-safe application code.