Why we need to modify the existing Java virtual machine for mobile platform applications?

We need to modify the existing Java virtual machine for the mobile platform because of low battery power, low processing power and it needs to run on less processor power and less and limited resources when compared with the personal computer. JVM was modified for Android OS of power management, binding, an earlier version of

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Can we design Scalable, Reliable and Secure Operating system?

As computer processing power is doubling after every 18 months according to Moore’s law. Currently, we have 3 to 10 processor’s cores are available and lots of memory available and thousands of different devices available. If this trend continues, are we need a different OS design that can scale? Designing a scalable operating system is