On Jan 3, 2014, at 3:31 PM, Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
wrote:
> On Fri, Jan 03, 2014 at 02:51:14PM -0500, Andres Lagar-Cavilla wrote:
>> On Jan 3, 2014, at 1:41 PM, Konrad Rzeszutek Wilk
<konrad.wilk@oracle.com> wrote:
>>
>>> On Fri, Jan 03, 2014 at 09:49:36AM -0500, Andres Lagar-Cavilla
wrote:
>>>>
>>>> On Dec 31, 2013, at 11:31 AM, Tim Deegan <tim@xen.org>
wrote:
>>>>
>>>>> At 10:33 -0500 on 31 Dec (1388482410), Konrad Rzeszutek
Wilk wrote:
>>>>>> On Mon, Dec 23, 2013 at 06:34:55PM +0000, Russell
Pavlicek wrote:
>>>>>>> On Twitter, Florian Heigl sent a out a few messages
about issues with xenpaging:
>>>>>>>
>>>>>>> ---
>>>>>>> 19-Dec: Anyone successfully use
#xen<https://twitter.com/search?q=%23xen&src=hash>
#xenpaging<https://twitter.com/search?q=%23xenpaging&src=hash>? docs
are at SLES manual, rest is mostly this:
http://www.gossamer-threads.com/lists/xen/devel/255798<http://t.co/P36VdL84Et>
dead feature or usable?
>>>>>>>
>>>>>>> 22-Dec:
@lars_kurth<https://twitter.com/lars_kurth>
@RCPavlicek<https://twitter.com/RCPavlicek> Hey guys, I wrote down as much
as I could https://piratenpad.de/p/Ik3lOBLniq1L5TEM
<https://t.co/e5LQCUD9d0> (since I'm on holiday and not constant
online)
>>>>>>>
>>>>>>> 22-Dec: Yay, tested
#xen<https://twitter.com/search?q=%23xen&src=hash> Xenpaging (memory
overcommit)
>>>>>>> [x] largely untested
>>>>>>> [x] docs outdated
>>>>>>> [x] syntax+logic changed
>>>>>>> [x] broken
>>>>>>> ---
>>>>>>>
>>>>>>> [I've taken the liberty of removing the
colorful expletive from the final post]
>>>>>>>
>>>>>>> Is Florian's assessment correct, or is there
somewhere we can point him for help? I'm on vacation this week, but if
someone replies to me, I will try to forward the information appropriately.
>>>>>>
>>>>>> The Maintainers file implies otherwise. Let me CC the
maintainers.
>>>>>
>>>>> Andres really owns this code, so I'll punt to him for
an official
>>>>> answer, but:
>>>> The part actively maintained is the hypervisor support for
paging, and the interface.
>>>>
>>>> tools/xenpaging is one way to consume that interface. It seems
to have suffered from bitrot.
>>>
>>> What is the other interface? Thanks!
>>
>> Not sure what the question is. There is one interface. What I was
referring to, is that tools/xenpaging implements one specific paging policy:
victim selection, rate limiting, paging target, all of these are algorithms that
entirely define what bang for your money you will get.
>>
>
> Right, but there is other code that uses this interface as well correct?
> Is it available for users ?
That I know of, Gridcentric's product. It's available as proprietary
software for a fee. I am unaware of a sharing user other than Gridcentric.
Virtuata was a mem-event user, Gridcentric is, and others have surfaced on the
list (Razvan Cocajaru for instance).
Andres