Re: [ilugd] Finding Virtualization Software that Fits

2011-09-05 Thread Arjun Venkatraman
All, apologies, can't share the article till next month I believe.
However, @Ashish, agreed Xen is much more forgiving when it comes to
supported hardware, but you really cant compare Xen's performance on a
server class system to its results on a desktop class machine. Also,
last I checked, which was some time in Oct 2010, there were also
restrictions on adding machines with heterogeneous CPUs to a server
cluster (If this has changed, I would love to be updated). Finally,
unless you're running a Xen modified kernel on your guest OS, you
really dont get much mileage from it.
Essentially I left Xen out on the same token that I left ESX out, i.e.
designed for a different class of systems.



On Thu, Sep 1, 2011 at 11:23 PM, Mahesh T. Pai paiva...@gmail.com wrote:
 Hmm... I risk taking the thread off topic.

 Ashish SHUKLA said on Thu, Sep 01, 2011 at 12:24:42AM +0530,:


   Not sure, why you think Xen is enterprise only.

 Because all this:-

   you use daily for watching pr0n, hanging out on social networks,
   writing code, etc., and run VMs,

 is what they do (at least, one of most important things) @ enterprise
 environment, right?

 g.d.r.



 --
 Mahesh T. Pai   ||
 End Users are just friends who haven't submitted a patch yet.

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-- 
What happens when an unstoppable force meets an immovable object?
One of them has its illusions dispelled

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E-mail: ar...@arjunvenkatraman.com
Mob (US): +1 (650) 924-2751
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Re: [ilugd] Finding Virtualization Software that Fits

2011-09-05 Thread Ashish SHUKLA
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Hash: SHA512

Arjun Venkatraman writes:
 All, apologies, can't share the article till next month I believe.
 However, @Ashish, agreed Xen is much more forgiving when it comes to
 supported hardware, but you really cant compare Xen's performance on a
 server class system to its results on a desktop class machine. 

With hexacore CPUs, fast memories, SSDs, NICs available for desktops, I guess
the gap is getting narrower. And IIRC, the article is about desktop class
hardware ;)

 Also, last I checked, which was some time in Oct 2010, there were also
 restrictions on adding machines with heterogeneous CPUs to a server cluster
 (If this has changed, I would love to be updated).

Could you please explain, what you mean by that?

 Finally, unless you're running a Xen modified kernel on your guest OS, you
 really dont get much mileage from it.  Essentially I left Xen out on the
 same token that I left ESX out, i.e.  designed for a different class of
 systems.

Not anymore. Thanks to paravirt_ops[1] kernel support which was present in
Linux kernel since 2.6.23, you can use same kernel to boot as dom0, domU, or
without Xen. I've never used VMware ESX (nor I intend to), but from what I
heard it's more like a virtualization OS made to run on bare metal, unlike Xen
which doesn't restrict you in this way, so you can use dom0 for different
purpose.

References:
[1]  http://wiki.xensource.com/xenwiki/XenParavirtOps

HTH
- -- 
Ashish SHUKLA

“Life's unfair - but root password helps!” (Eygene Ryabinkin, .sig
of Eygene Ryabinkin, 2010)
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Re: [ilugd] Finding Virtualization Software that Fits

2011-09-01 Thread Mahesh T. Pai
Hmm... I risk taking the thread off topic. 

Ashish SHUKLA said on Thu, Sep 01, 2011 at 12:24:42AM +0530,:


  Not sure, why you think Xen is enterprise only.

Because all this:- 

  you use daily for watching pr0n, hanging out on social networks,
  writing code, etc., and run VMs, 

is what they do (at least, one of most important things) @ enterprise
environment, right?

g.d.r.



-- 
Mahesh T. Pai   ||
End Users are just friends who haven't submitted a patch yet.

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[ilugd] Finding Virtualization Software that Fits

2011-08-31 Thread Arjun Venkatraman
My article on this months LFY cover. Would love feedback.

http://www.linuxforu.com
http://www.linuxforu.com/how-to/virtualisation/finding-virtualisation-software-that-fits/

Regards
Arjun

-- 
What happens when an unstoppable force meets an immovable object?
One of them has its illusions dispelled

Arjun Venkatraman
E-mail: ar...@arjunvenkatraman.com
Mob (US): +1 (650) 924-2751
Mob (IN): +91 9811142825
Arjun Online: http://www.arjunvenkatraman.com

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Re: [ilugd] Finding Virtualization Software that Fits

2011-08-31 Thread Ashish SHUKLA
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Hash: SHA512

Arjun Venkatraman writes:
 My article on this months LFY cover. Would love feedback.

 http://www.linuxforu.com
 http://www.linuxforu.com/how-to/virtualisation/finding-virtualisation-software-that-fits/

feedback

- From the abstract, an article about Virtualization stack, that excludes Xen
seems incomplete. You can run Xen on your X11 GUI enabled GNU/Linux box which
you use daily for watching pr0n, hanging out on social networks, writing code,
etc., and run VMs, and get better performance with VMs (paravirtualized). Not
sure, why you think Xen is enterprise only.

And also to read that article one needs to subscribe to the magazine, but
they're mising the A tag around click here.

As I see, you're the author of the article and hoping for some feedback, you
can probably make it easily accessible i.e. without requiring LFY subscription
as well, thought I'm not sure if that's allowed.

/feedback

- -- 
Ashish SHUKLA

“The only difference between the saint and the sinner is that every
saint has a past and every sinner has a future.” (Oscar Wilde)
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