final presenation on virtual systems

8/7/2019 final presenation on virtual systems

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By: Samprit Patel

Madhuri Shinde


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Content:

Itroduction

What is Virtual Systems?

How do Virtual Machine Work?

Example ofA Virtual System.

Use ofVirtual System.

Limitations ofVirual System


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Introduction

In software reviews, often a program is tested in a platform virtual

machine. Ifyou are a programmer, you may use virtual machines to see ifyour

product runs safely in another operating systemfor example, the different

versions ofwindows. Maybe you like to test and analyze malware, and don't

want toget your computer infected. This virtualization can help.


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(a).: Non Virtual Machine (b).: Virtual Machines


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How do Virtual System Works?

VMWare hosts each guest operating system in a separate, secure virtual

machine. Each virtual machine (VM) has its own virtual CPU, memory, disk,

etc. and all ofthe virtual hardware is mapped to your computer's real hardware.

Each virtual machine also comes complete with its own BIOS that can be

edited the same way you'd edit the real BIOS on the computer that VMWare is

running on. This lets you customize your virtual machines and control all of

the usual stuffthatyoucancontrolviayour PC's actual BIOS.


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Example of A Virtual System.

JAVA VIRTUAL MACHINE

JVM is the abstarct Computing Machine loke as anyother computing

machine which interpretes bytecode to machine dependent native code. Theoutput ofJVM is native code which contains low level intructions which are

easily understable by micriprocessors which proceses this native code and give

desired output. JVM is the runtime environment for java programes


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Use of VIRTUAL SYSTEM

Try newoperating systems

Test your software

Set up an office quickly

Small Biz disaster recovery

Build kid boxes

Backup your system


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Advantages

Mobility

File-sharing capabilities

Storage


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Scope Of Improvement

Ifyou are thinking this is going to eliminate the need for a better computer to run

more programs at the same time, etc. I'm afraid you need to think again. Virtual

machines use the same memory, the same CPU, and same hard drive as your real, host

computer. This can be quite a problem, especiallyfor computers with low specs.

For example: On my laptop, I have 2GB ofmemory. Usually, that is quite enoughto satisfy me, as often I only use about 50-55% of it. However, running two operating

systems, one on a virtual machine, can increase that to 90+%. With that amount of RAM

used, memory swapping might occur, and that slows things down.

So just remember: If you don't have a new, high-end computer, virtual machines

can make things a bit slower. For me, most of the time running one is something of an

ordeal, because I have to shut down mostly unnecessary processes and services.


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Conclusion

A virtual machine has many usessecurity, trialing, studying. But it also

sucks up system resources, so it isn't an easy thing for some.


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Thank You!!!!


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Any Question

final presenation on virtual systems

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