From mboxrd@z Thu Jan  1 00:00:00 1970
From: Brendan Gregg <bgregg@netflix.com>
Subject: Re: Clarifying PVH mode requirements
Date: Mon, 1 Feb 2016 15:49:56 -0800
Message-ID: <CAJN39ojcZ8=VB94DkA8n=R5hq3Psj6bNyz21XzBM6uuwATPZNg@mail.gmail.com>
References: <56AE7C3B.7010100@gmail.com> <56AF3336.7040906@citrix.com>
	<56AF679E.4040104@oracle.com> <56AF7E7A.1040305@gmail.com>
	<56AFAEA7.9060003@oracle.com> <56AFB1B8.5050202@gmail.com>
	<56AFB8F7.1040709@oracle.com>
Mime-Version: 1.0
Content-Type: multipart/mixed; boundary="===============5291291456977415665=="
Return-path: <xen-devel-bounces@lists.xen.org>
In-Reply-To: <56AFB8F7.1040709@oracle.com>
List-Unsubscribe: <http://lists.xen.org/cgi-bin/mailman/options/xen-devel>,
	<mailto:xen-devel-request@lists.xen.org?subject=unsubscribe>
List-Post: <mailto:xen-devel@lists.xen.org>
List-Help: <mailto:xen-devel-request@lists.xen.org?subject=help>
List-Subscribe: <http://lists.xen.org/cgi-bin/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xen.org?subject=subscribe>
Sender: xen-devel-bounces@lists.xen.org
Errors-To: xen-devel-bounces@lists.xen.org
To: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: xen-devel@lists.xen.org, PGNet Dev <pgnet.dev@gmail.com>
List-Id: xen-devel@lists.xenproject.org

--===============5291291456977415665==
Content-Type: multipart/alternative; boundary=001a1142ea468e61aa052abe0c7e

--001a1142ea468e61aa052abe0c7e
Content-Type: text/plain; charset=UTF-8

On Mon, Feb 1, 2016 at 11:58 AM, Boris Ostrovsky <boris.ostrovsky@oracle.com
> wrote:

> On 02/01/2016 02:27 PM, PGNet Dev wrote:
>
>> On 02/01/2016 11:14 AM, Boris Ostrovsky wrote:
>>
>>> Is 'HVMLite' replacing 'PVH'? Or are they separate modes?
>>>>
>>>
>>> Yes, HVMlite is replacing PVH. Probably once we get dom0 support.
>>>
>>
>> If that's a 'done deal', and it sounds like it is, it'd be useful to have
>> it integrated into:
>>
>> http://wiki.xen.org/wiki/Understanding_the_Virtualization_Spectrum
>>
>> particularly as there's no mention of HVMlite on the wiki, at all.
>>
>
Thanks, HVMlite is new to me. I created the Xen modes diagram on this page
(based on the older modes diagram; if anyone wants the new omnigraffle
source, email me), and I just created a Xen wiki account so I can update
this page. I've been meaning to update this modes diagram anyway, and
improve the columns.


> HVMlite is very new: domU hypervisor support has been added less than two
> months ago and Linux patches are being reviewed as we speak (FreeBSD, I
> believe, is supported).
>
>
>> It's unclear whether PVH, in its current dev state (at least here), is
>> worth-the-visit -- especially if HVMlite is "ComingSoon(tm)".
>>
>> I suppose I'm looking for some guidance as to which to invest time in
>> while on Xen 4.6.0, ack'ing that neither PVH nor HVMlite are
>> production-ready.
>>
>
> Current PVH implementation has never been described as production-ready.
> What is happening now with HVMlite is essentially bringing PVH to
> production-quality level.


So should I s/PVH/HVMlite/g? Or too much of a simlification? thanks,

Brendan

-- 
Brendan Gregg, Senior Performance Architect, Netflix

--001a1142ea468e61aa052abe0c7e
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><br><div class=3D"gmail_extra"><br><div class=3D"gmail_quo=
te">On Mon, Feb 1, 2016 at 11:58 AM, Boris Ostrovsky <span dir=3D"ltr">&lt;=
<a href=3D"mailto:boris.ostrovsky@oracle.com" target=3D"_blank">boris.ostro=
vsky@oracle.com</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" =
style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><sp=
an class=3D"">On 02/01/2016 02:27 PM, PGNet Dev wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
On 02/01/2016 11:14 AM, Boris Ostrovsky wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex"><blockquote class=3D"gmail_quote" style=3D"m=
argin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Is &#39;HVMLite&#39; replacing &#39;PVH&#39;? Or are they separate modes?<b=
r>
</blockquote>
<br>
Yes, HVMlite is replacing PVH. Probably once we get dom0 support.<br>
</blockquote>
<br>
If that&#39;s a &#39;done deal&#39;, and it sounds like it is, it&#39;d be =
useful to have it integrated into:<br>
<br>
<a href=3D"http://wiki.xen.org/wiki/Understanding_the_Virtualization_Spectr=
um" rel=3D"noreferrer" target=3D"_blank">http://wiki.xen.org/wiki/Understan=
ding_the_Virtualization_Spectrum</a><br>
<br>
particularly as there&#39;s no mention of HVMlite on the wiki, at all.<br><=
/blockquote></span></blockquote><div><br></div><div>Thanks, HVMlite is new =
to me. I created the Xen modes diagram on this page (based on the older mod=
es diagram; if anyone wants the new omnigraffle source, email me), and I ju=
st created a Xen wiki account so I can update this page. I&#39;ve been mean=
ing to update this modes diagram anyway, and improve the columns.</div><div=
><br></div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;bor=
der-left:1px #ccc solid;padding-left:1ex"><span class=3D""><blockquote clas=
s=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;pad=
ding-left:1ex">
</blockquote>
<br></span>
HVMlite is very new: domU hypervisor support has been added less than two m=
onths ago and Linux patches are being reviewed as we speak (FreeBSD, I beli=
eve, is supported).<span class=3D""><br>
<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
<br>
It&#39;s unclear whether PVH, in its current dev state (at least here), is =
worth-the-visit -- especially if HVMlite is &quot;ComingSoon(tm)&quot;.<br>
<br>
I suppose I&#39;m looking for some guidance as to which to invest time in w=
hile on Xen 4.6.0, ack&#39;ing that neither PVH nor HVMlite are production-=
ready.<br>
</blockquote>
<br></span>
Current PVH implementation has never been described as production-ready. Wh=
at is happening now with HVMlite is essentially bringing PVH to production-=
quality level.</blockquote><div><br></div><div>So should I s/PVH/HVMlite/g?=
 Or too much of a simlification? thanks,</div><div><br></div><div>Brendan</=
div></div><div><br></div>-- <br><div class=3D"gmail_signature"><div dir=3D"=
ltr">Brendan Gregg, Senior Performance Architect, Netflix</div></div>
</div></div>

--001a1142ea468e61aa052abe0c7e--


--===============5291291456977415665==
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel

--===============5291291456977415665==--