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Inside VMware Fusion

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19 Ekim 2007 09:07:01
23625 Gösterim, 24 Yorum

Google Tech Talks
October, 17 2007

ABSTRACT

Join Ben Gertzfield of VMware for a look behind the curtain at virtualization on the Mac, the technology that frees operating systems from their earthly hardware chains.

Similar in spirit to the ideals of the microkernel and distributed computing, the abstracted and idealized CPU, storage, network, and other devices provided by virtualization remove the barriers formed by the underlying realities of heterogeneous physical hardware.

We'll discuss the technologies forming and building upon virtualization, including the hypervisor (or virtual machine monitor), replay (deterministic recording and replaying of all hardware and software events), and virtual machine-based disaster recovery.

In addition, we'll share the lessons learned from jumping head-first into the consumer software and Mac worlds, and how "thinking different" applies to porting a massive source code base to its third platform (after Linux and Windows).

This talk will be taped by the engEDU Tech Talks Team.

Speaker: Ben Gertzfield
Ben Gertzfield is the lead developer of VMware Fusion for Mac, VMware's first virtualization solution for Intel Macs, currently available for free trial download.

Ben graduated from the University of California, Santa Cruz with a degree in computer science, and subsequently lived and worked in Japan be...

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Bu Resime Yapılan Yorumlar (24)

matthewisthebest

no!!!!!!!!!!!!! that was virtual pc in the power pc era of macs.

switchway

no
one
cares

Quizerzink

what a nerd...

7h3ki113r666

uploaded on my birthday that must be why i love this program

malcr001

He doesn't really emphasise what it can do. I mean common its literally breaking down the walls of operating systems we've all been familiar with. It's amazing! I especially like the Unity feature.

bgertzfield

It's likely that the development team that created the Java-based software you used went to great pains to make it work across multiple versions of the JRE. Because the IA-32 and IA-64 ISAs make backwards-compatibility a priority, software developers don't have to think about whether their product will run on the latest Intel Core Duo or AMD processor. This has made x86 succeed as an application layer, both virtual and physical.

koshua

@bgetzfield: your complications don't rate a mention when it comes to the impact of Java in the data center. Example: I've just managed a project implementing a Java-based OSS for a multinational service provider. Listed as working with "any compliant J2EE container" and of the four trialled, they were right, with 1.4, 1.5, 1.6 and even JRockit. The platform choice is now one of JVM+AppServer; before it was of server+OS. That's the commercial reality today, whatever your portability issues.

bgertzfield

I totally disagree that Java's succeeded at virtualizing the application layer. Sun has shown repeatedly that they have no interest in maintaining backwards-compatibility between Java versions, and this is crucial to making any virtualization engine succeed. I simply can't take a Java program I wrote for Java 1.3 and have it work reliably under a later JRE. Sun makes too many changes under the hood, and does too little regression testing, for this to work correctly.

karrarhm

Doesn't that make the MAC slower than usual ????????

cstubing

Yeah, ESX Server sounds great -- I'm a huge fan!

HolidayInGuantanamo

VMWare ESX Server also does not need a host OS. It's used in production situations, and obviously improves performance as it means one less layer to deal with before getting to the machine. It does the job of memory management, etc that the real OS does. I've been told it's actually making use of a modified version of Linux.

cstubing

VMWare also has a hardware VM container that will start shipping in servers... This means no more need for a host OS at all -- the real machine boots into the VM container (stfw for "hardware hypervisor"). If that becomes ubiquitous, expect more light OS's to come for application developers to offer an entire working VM instead of just the app.

cstubing

It's a virtual MACHINE. Just like a real machine, it needs an OS. I wouldn't exactly say that it "depends" on the OS. You can run it without an OS, but it will be as useful as firing up a normal computer that has no OS on it. Have fun in the BIOS config!

HolidayInGuantanamo

Now why *do* some servers only have 1 application running on them? Comes down to isolation and ease of troubleshooting. When you run many programs on 1 OS, they can affect each other in ways you don't want or dont even know. If you only have 1 app to deal with, there are less factors to consider when things go wrong.

HolidayInGuantanamo

Another is server consolidation. Companies have servers that only run 1 application, mostly with server resources underutilised. Put each of those apps in their own VM, put the VMs into a few grunty servers, then you generate less heat in the server room, use less electricity, less hardware to maintain.

HolidayInGuantanamo

Another is when you want to run multiple operating systems at the same time. Want to run Linux AND Windows XP AND Windows 2000 on your Mac? You can run those in their own VMs, with OSX as the underlying OS. Majority of computer users will tend to only use one OS, but it allows flexibility for those who are switching back and forth or transitioning to a different OS.

HolidayInGuantanamo

There are many scenarios for using VMs. One is isolation of applications. Remember back when you could only have 1 version of Internet Explorer on Windows? If you wanted to test a website from diff. ver. of Windows, you ended up requiring multiple PCs, each with a diff. version of Windows. OR you could use one PC, with enough CPU and memory, running multiple VMs at the same time.

WolYou

So the VM depends on the OS. Well, what exactly is the benefit then? I know it :) One product more to sell. Unless you get rid of operating systems, it's all about encapsulating ad infinitum. VM uses the old host paradigm and call it an "advantage". To me this is old wine in new bottles.

RuddODragonFear

hahaaaaaaa! y'know!

edocronian

VMWare techtalk drinking game: Drink everytime he says 'y'know'

koshua

Excellent presentation. I do think Getzfield misses the point when bagging Java, though; I think it has succeeded, not failed, at virtualisating the application layer. It's a misnomer to compare the Java Virtual Machine with an Intel Virtual Machine, just because they have similar names.