From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Mr. Teo En Ming (Zhang Enming)" <space.time.universe@gmail.com>
Subject: Re: [Xen-devel] Max. PV and HVM Guests
Date: Mon, 9 Nov 2009 11:35:02 +0800
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To: =?ISO-8859-1?Q?Pasi_K=E4rkk=E4inen?= <pasik@iki.fi>
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Yes. I will try to see if there's a traceback.

--=20
Mr. Teo En Ming (Zhang Enming) Dip(Mechatronics) BEng(Hons)(Mechanical
Engineering)
Alma Maters:
(1) Singapore Polytechnic
(2) National University of Singapore
My Primary Blog: http://teo-en-ming-aka-zhang-enming.blogspot.com
My Secondary Blog: http://enmingteo.wordpress.com
My Youtube videos: http://www.youtube.com/user/enmingteo
Email: space.time.universe@gmail.com
Mobile Phone (Starhub Prepaid): +65-8369-2618
Street: Bedok Reservoir Road
Country: Singapore

On Sun, Nov 8, 2009 at 9:50 PM, Pasi K=E4rkk=E4inen <pasik@iki.fi> wrote:

> On Sun, Nov 08, 2009 at 07:45:01PM +0800, Mr. Teo En Ming (Zhang Enming)
> wrote:
> >    Hi,
> >
> >    I have observed that there is a maximum limit to the number of PV or
> HVM
> >    virtual machines you can start before dom0 hangs or crashes.
> >
> >    For Fedora 11 Linux x86-64 PV guests, dom0 will crash when I start t=
he
> 7th
> >    instance. Max I can start is 6 without crashing.
> >
> >    For CentOS 5.2 Linux x86-64 HVM guests, dom0 will crash when I start
> the
> >    4th instance. Max I can start is 3 without crashing.
> >
> >    I have 6 GB of DDR2-800 with Intel Pentium Dual Core E6300 2.8 GHz o=
n
> >    Intel DQ45CB motherboard.
> >
> >    Are the above limits reasonable considering the hardware
> specifications of
> >    my computer?
> >
> >    I am using Xen 3.5-unstable changeset 20143 with pv-ops dom0 kernels
> >    2.6.30-rc3, 2.6.31-rc6, 2.6.31.1, 2.6.31.4, and 2.6.31.5. My host
> >    operating system is Fedora 11 Linux x86-64.
> >
>
> Dom0 or Xen shouldn't crash for starting guests.
> Sounds like a bug somewhere.
>
> Any errors/tracebacks? Do you have serial console configured?
>
> -- Pasi
>
>

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Yes. I will try to see if there&#39;s a traceback.<br><br>-- <br>Mr. Teo En=
 Ming (Zhang Enming) Dip(Mechatronics) BEng(Hons)(Mechanical Engineering)<b=
r>Alma Maters:<br>(1) Singapore Polytechnic<br>(2) National University of S=
ingapore<br>
My Primary Blog: <a href=3D"http://teo-en-ming-aka-zhang-enming.blogspot.co=
m">http://teo-en-ming-aka-zhang-enming.blogspot.com</a><br>My Secondary Blo=
g: <a href=3D"http://enmingteo.wordpress.com">http://enmingteo.wordpress.co=
m</a><br>
My Youtube videos: <a href=3D"http://www.youtube.com/user/enmingteo">http:/=
/www.youtube.com/user/enmingteo</a><br>Email: <a href=3D"mailto:space.time.=
universe@gmail.com">space.time.universe@gmail.com</a><br>Mobile Phone (Star=
hub Prepaid): +65-8369-2618<br>
Street: Bedok Reservoir Road<br>Country: Singapore<br><br><div class=3D"gma=
il_quote">On Sun, Nov 8, 2009 at 9:50 PM, Pasi K=E4rkk=E4inen <span dir=3D"=
ltr">&lt;<a href=3D"mailto:pasik@iki.fi">pasik@iki.fi</a>&gt;</span> wrote:=
<br><blockquote class=3D"gmail_quote" style=3D"border-left: 1px solid rgb(2=
04, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div class=3D"im">On Sun, Nov 08, 2009 at 07:45:01PM +0800, Mr. Teo En Ming=
 (Zhang Enming) wrote:<br>
&gt; =A0 =A0Hi,<br>
&gt;<br>
&gt; =A0 =A0I have observed that there is a maximum limit to the number of =
PV or HVM<br>
&gt; =A0 =A0virtual machines you can start before dom0 hangs or crashes.<br=
>
&gt;<br>
&gt; =A0 =A0For Fedora 11 Linux x86-64 PV guests, dom0 will crash when I st=
art the 7th<br>
&gt; =A0 =A0instance. Max I can start is 6 without crashing.<br>
&gt;<br>
&gt; =A0 =A0For CentOS 5.2 Linux x86-64 HVM guests, dom0 will crash when I =
start the<br>
&gt; =A0 =A04th instance. Max I can start is 3 without crashing.<br>
&gt;<br>
&gt; =A0 =A0I have 6 GB of DDR2-800 with Intel Pentium Dual Core E6300 2.8 =
GHz on<br>
&gt; =A0 =A0Intel DQ45CB motherboard.<br>
&gt;<br>
&gt; =A0 =A0Are the above limits reasonable considering the hardware specif=
ications of<br>
&gt; =A0 =A0my computer?<br>
&gt;<br>
&gt; =A0 =A0I am using Xen 3.5-unstable changeset 20143 with pv-ops dom0 ke=
rnels<br>
&gt; =A0 =A02.6.30-rc3, 2.6.31-rc6, 2.6.31.1, 2.6.31.4, and 2.6.31.5. My ho=
st<br>
&gt; =A0 =A0operating system is Fedora 11 Linux x86-64.<br>
&gt;<br>
<br>
</div>Dom0 or Xen shouldn&#39;t crash for starting guests.<br>
Sounds like a bug somewhere.<br>
<br>
Any errors/tracebacks? Do you have serial console configured?<br>
<font color=3D"#888888"><br>
-- Pasi<br>
<br>
</font></blockquote></div><br><br clear=3D"all"><br><br>

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