XEN Hypervisor Lines Of Code

XEN Hypervisor Lines Of Code

[Lil Evil]

Hi

I was just wondering if anybody keeps a record of the LOC (privileged LOC) in the XEN Hypervisor.
I was under the (false???) impression that the Hypervisor consists of a couple of tens of thousand privileged LOCs.
I am somewhat surprised  about Joanna Rutkowskas statement about the 300k LOC in Xen 3.3.
Does anybody have different (same) numbers?

Thanks
lIl
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Re: XEN Hypervisor Lines Of Code

[Samuel Thibault]

Lil Evil, le Thu 11 Sep 2008 12:11:12 +0200, a écrit :
> I was under the (false???) impression that the Hypervisor consists of a couple of tens of thousand privileged LOCs.
> I am somewhat surprised  about Joanna Rutkowskas statement about the 300k LOC in Xen 3.3.
> Does anybody have different (same) numbers?

xen-unstable.hg/xen$ find . -name \*.\[ch\] | xargs cat | wc -l 
292066

Samuel

Re: XEN Hypervisor Lines Of Code

[Keir Fraser]

On 11/9/08 11:11, "Lil Evil" <Lil_Evil@gmx.de> wrote:

> Hi
> 
> I was just wondering if anybody keeps a record of the LOC (privileged LOC) in
> the XEN Hypervisor.
> I was under the (false???) impression that the Hypervisor consists of a couple
> of tens of thousand privileged LOCs.
> I am somewhat surprised  about Joanna Rutkowskas statement about the 300k LOC
> in Xen 3.3.
> Does anybody have different (same) numbers?

The number has been growing. For an x86 build, if I exclude IA64 and XSM
components (usually not built) I count about 200k LOC. If I further exclude
header files (generally don't have much code in them) then I end up about
150k LOC.

So that's a more reasonable estimate in my opinion, at about half Joanna's
figure. Obviously this is still rather larger than historical figures for
Xen version 1 or Xen version 2.

 -- Keir

Re: XEN Hypervisor Lines Of Code

[Lil Evil]

> 
> > Hi
> > 
> > I was just wondering if anybody keeps a record of the LOC (privileged
> LOC) in
> > the XEN Hypervisor.
> > I was under the (false???) impression that the Hypervisor consists of a
> couple
> > of tens of thousand privileged LOCs.
> > I am somewhat surprised  about Joanna Rutkowskas statement about the
> 300k LOC
> > in Xen 3.3.
> > Does anybody have different (same) numbers?
> 
> The number has been growing. For an x86 build, if I exclude IA64 and XSM
> components (usually not built) I count about 200k LOC. If I further
> exclude
> header files (generally don't have much code in them) then I end up about
> 150k LOC.
> 
> So that's a more reasonable estimate in my opinion, at about half Joanna's
> figure. Obviously this is still rather larger than historical figures for
> Xen version 1 or Xen version 2.
> 
>  -- Keir
> 
> 
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xensource.com
> http://lists.xensource.com/xen-devel

Hi

After looking at the tree, I would say that this sounds more likely. 
Maybe, http://www.xen.org/xen/ deserves an updated concerning this - or the number should be removed at all to prevent confusion.

thanks
lIl


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Re: XEN Hypervisor Lines Of Code

[Keir Fraser]

On 11/9/08 11:48, "Lil Evil" <Lil_Evil@gmx.de> wrote:

>> So that's a more reasonable estimate in my opinion, at about half Joanna's
>> figure. Obviously this is still rather larger than historical figures for
>> Xen version 1 or Xen version 2.
>> _______________________________________________
>> Xen-devel mailing list
>> Xen-devel@lists.xensource.com
>> http://lists.xensource.com/xen-devel
> 
> Hi
> 
> After looking at the tree, I would say that this sounds more likely.
> Maybe, http://www.xen.org/xen/ deserves an updated concerning this - or the
> number should be removed at all to prevent confusion.

Mmm, yes that figure is rather old!

 -- Keir

Re: XEN Hypervisor Lines Of Code

[George S. Coker, II]

There are probably a couple of programs/schemes out there for counting lines
of code.  One that I will point out is David Wheeler's SLOC program
http://www.dwheeler.com/sloc/ which provides some pretty reliable numbers.

On 9/11/08 7:07 AM, "Keir Fraser" <keir.fraser@eu.citrix.com> wrote:

> On 11/9/08 11:48, "Lil Evil" <Lil_Evil@gmx.de> wrote:
> 
>>> So that's a more reasonable estimate in my opinion, at about half Joanna's
>>> figure. Obviously this is still rather larger than historical figures for
>>> Xen version 1 or Xen version 2.
>>> _______________________________________________
>>> Xen-devel mailing list
>>> Xen-devel@lists.xensource.com
>>> http://lists.xensource.com/xen-devel
>> 
>> Hi
>> 
>> After looking at the tree, I would say that this sounds more likely.
>> Maybe, http://www.xen.org/xen/ deserves an updated concerning this - or the
>> number should be removed at all to prevent confusion.
> 
> Mmm, yes that figure is rather old!
> 
>  -- Keir
> 
> 
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xensource.com
> http://lists.xensource.com/xen-devel

-- 
George S. Coker, II <gscoker@alpha.ncsc.mil>