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Thread: Pros and cons of qemu and virtualbox

  1. #1
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    Question Pros and cons of qemu and virtualbox

    Greetings
    Can you please share your knowledge of pros and cons of qemu and virtualbox?
    The structure that I would like to see is the following:

    Qemu
    Pros
    Insert pros here

    Cons
    Insert cons here

    Virtualbox
    Pros
    Insert pros here

    Cons
    Insert cons here

    This would help beginners like me to decide which one is the best choice!
    That being said, let the share of knowledge begin

  2. #2
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    Default Re: Pros and cons of qemu and virtualbox

    Please hold back a little. The subjects you're touching have already been discussed thousands of times in hundreds of languages. Threads like the ones you've started here will add nothing to those. And, personally I'm not waiting for YAFWAWS ( Yet Another Flame War About Whatever Subject ), which IMNSHO the average thread re. "vs", "pros and cons" results in in most cases.
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  3. #3
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    Default Re: Pros and cons of qemu and virtualbox

    Does exist a post that explains the main differences between Qemu and Virtualbox for beginners?

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    Default Re: Pros and cons of qemu and virtualbox

    Quote Originally Posted by pensador_13 View Post
    Does exist a post that explains the main differences between Qemu and Virtualbox for beginners?
    Google is your friend, possibly...

    https://encrypted.google.com/search?...box+comparison

    http://www.linuxjournal.com/content/qemu-vs-virtualbox
    https://www.quora.com/What-are-the-p...ox-versus-QEMU
    Regards, Paul

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  5. #5
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    Default Re: Pros and cons of qemu and virtualbox

    You should understand the comparison as you've framed it is flawed... comparing completely different things (ie apples and oranges).

    You should start with looking up the definitions for each(Wikipedia is a good start).

    Virtualbox is a fairly typical "2nd Gen" virtualization technology (ie fundamentally will perform and shares a common architecture with practically all other virtualization technologies except Xen). A major differentiator is that it installs and runs pretty much as a User application which means that by default it's not suitable for "Server" use without modification. With other virtualization technologies, you can deploy as a Server more quickly with fewer tweaks.

    Strictly speaking, QEMU today is not its own virtualization technology in the same way we speak of the major vendors... It used to be, but today has been integrated into both KVM and Xen, enabling both KVM and Xen to support full emulation in special QEMU mode. Full emulation can be considered an important capability because it means that your Guest can think it's running on some other CPU architecture, not the same as the HostOS. Full emulation in the past came with severe performance penalties but very recently enjoys x64 CPU extensions as well, so it's less clear how much of a performance hit happens.

    If I'm not being completely clear, IMO QEMU and Virtualbox are too different in so many ways to compare, or the comparison is so starkly different that each is usable only for different purposes. Any comparison of which is better should only be asked when comparing 2 things that are similar enough that either might be considered in the same situation which isn't what's happening here.

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    Default Re: Pros and cons of qemu and virtualbox

    Quote Originally Posted by pensador_13 View Post
    Does exist a post that explains the main differences between Qemu and Virtualbox for beginners?
    I don't really think that we should do all the work for you. The best way for you to arrive at a consensus within yourself is to do some tests, some work.

    What's that old saying? "Knowledge comes from endeavour" or something like that.
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    Default Re: Pros and cons of qemu and virtualbox

    I see that assumptions are being made about me not doing my research, and they are wrong. IMHO http://marciasirotamd.com/psychology...ng-assumptions explains well the problem with making assumptions. I did my research, however it was not a good one. Also it would be nice to have a sticky post that explains what is Qemu and Virtualbox in a very simple way. I know that it would be hard work, but a very appreciated one by beginners

  8. #8
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    Default Re: Pros and cons of qemu and virtualbox

    Quote Originally Posted by pensador_13 View Post
    I see that assumptions are being made about me not doing my research, and they are wrong.
    Hi
    Then my assumption is your research is somewhat flawed?

    The openSUSE Documentation would be a good place to start.
    https://doc.opensuse.org/documentati...book.virt.html

    For Virtualbox, head to the documentation at Oracle, again, seems a no brainer?
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  9. #9
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    Default Re: Pros and cons of qemu and virtualbox

    Quote Originally Posted by pensador_13 View Post
    This would help beginners like me to decide which one is the best choice!
    As a "beginning to need to use Virtual Machines" user, it may help to first decide **why** one wishes to use a Virtual Machine.

    If the "why" is, to run another operating system on a Linux platform then, the choice narrows down to "which VM product provides the best support for the wished for configuration". For example, running the Redmond thing in a VM on a Linux platform is not easy and, the choice of "which VM product to use" is also not easy . . .

    If on the other hand, the "why" is, to run Linux instances in VMs on a Linux platform, the choices are many and, there's no "best choice" -- it comes down to "which VM product is the easiest to manage from the point of view of the human beings involved".

  10. #10
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    Default Re: Pros and cons of qemu and virtualbox

    Quote Originally Posted by malcolmlewis View Post
    Hi
    Then my assumption is your research is somewhat flawed?

    The openSUSE Documentation would be a good place to start.
    https://doc.opensuse.org/documentati...book.virt.html

    For Virtualbox, head to the documentation at Oracle, again, seems a no brainer?
    1) I already said that my research was not good.

    2) Thank you for sharing the link.

    3) Please be polite with other people. It is a important behavior to a healthy community.

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