OK will investigate and post results.

Thanks again.

Kind Regards,
Marlon Davids

..............................................................................................
P: +44 (0)845 619 7444 | M: +44 (0)7827 333 583  E:  [email protected]
..............................................................................................
W: www.umbeehosting.co.uk Managed Hosting Specialists.
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Company Registration Number. 06954604. VAT Registration Number 977446172 

This e-mail and the information it contains are confidential.
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 Please consider the environment before printing this email


-----Original Message-----
From: Anthony Xu [mailto:[email protected]] 
Sent: 10 May 2012 02:49
To: [email protected]
Subject: RE: VM's freezing up

Look likes it is related to hardware,
you might want to try turning off some advanced features which is introduced in 
Nehalem processor, such as, turbo mode, constant/invariable-TSC.
Or you might want to try XenServer 6.0.2 which has xen 4.1 hypersivor which 
supports new processor features, XenServer 5.6 SP is using xen 3.4.2.

Or you might turn to XenServer forum.
http://forums.citrix.com/category.jspa?categoryID=101


Anthony



> -----Original Message-----
> From: Marlon Davids [mailto:[email protected]]
> Sent: Wednesday, May 09, 2012 6:34 PM
> To: [email protected]
> Subject: RE: VM's freezing up
> 
> Yes the tools are installed.
> 
> Kind Regards,
> Marlon Davids
> 
> .......................................................................
> .......................
> P: +44 (0)845 619 7444 | M: +44 (0)7827 333
> 583  E:  [email protected]
> .......................................................................
> .......................
> W: www.umbeehosting.co.uk Managed Hosting Specialists.
> .......................................................................
> .......................
> 
> 
> Umbee Ltd, TMS House, Cray Avenue, Orpington, Kent, BR5 3QB Company 
> Registration Number. 06954604. VAT Registration Number
> 977446172
> 
> This e-mail and the information it contains are confidential.
> If you have received this e-mail in error please notify the sender 
> immediately.
> You should not copy it for any purpose or disclose its contents to any 
> other person.
> The contents of this e-mail do not necessarily reflect the views of 
> the company.
> E&OE
> 
> P Please consider the environment before printing this email
> 
> 
> -----Original Message-----
> From: Anthony Xu [mailto:[email protected]]
> Sent: 10 May 2012 02:30
> To: [email protected]
> Subject: RE: VM's freezing up
> 
> Two sockets should be okay,
> Did you install xs-tools for VM?
> 
> Anthony
> 
> From: Marlon Davids [mailto:[email protected]]
> Sent: Wednesday, May 09, 2012 6:23 PM
> To: [email protected]
> Subject: RE: VM's freezing up
> 
> 
> Hello Anthony
> 
> Each Host has 2x E5505 Quad core CPU’s 8 physical cores in total.
> 
> The plan was to define our service offerings using this model:
> 
> XX-Small
> 
> 0.25ghz
> 
> 256MB
> 
> X-Small
> 
> 0.5ghz
> 
> 512MB
> 
> Small
> 
> 1ghz
> 
> 1GB
> 
> Medium
> 
> 2ghz
> 
> 2GB
> 
> Large
> 
> 2x 2ghz
> 
> 4GB
> 
> X-Large
> 
> 4x 2ghz
> 
> 8GB
> 
> XX-Large
> 
> 8x 2ghz
> 
> 16GB
> 
> 
> 
> 
> Any Windows VM that we assign to the “Large” service offering will 
> start to freeze sometimes it will even hang on boot.
> 
> 
> 
> [cid:[email protected]]
> 
> 
> 
> 
> 
> 
> 
> Kind Regards,
> 
> Marlon Davids
> 
> 
> 
> .......................................................................
> .......................
> 
> P: +44 (0)845 619 7444 | M: +44 (0)7827 333 583  E:
> [email protected]
> 
> .......................................................................
> .......................
> 
> W: www.umbeehosting.co.uk Managed Hosting Specialists.
> 
> .......................................................................
> .......................
> 
> 
> 
> 
> 
> Umbee Ltd, TMS House, Cray Avenue, Orpington, Kent, BR5 3QB
> 
> Company Registration Number. 06954604. VAT Registration Number
> 977446172
> 
> 
> 
> This e-mail and the information it contains are confidential.
> 
> If you have received this e-mail in error please notify the sender 
> immediately.
> 
> You should not copy it for any purpose or disclose its contents to any 
> other person.
> 
> The contents of this e-mail do not necessarily reflect the views of 
> the company.
> 
> E&OE
> 
> 
> 
> • Please consider the environment before printing this email
> 
> 
> 
> 
> 
> -----Original Message-----
> From: Anthony Xu [mailto:[email protected]]
> Sent: 10 May 2012 02:15
> To: [email protected]
> Subject: RE: VM's freezing up
> 
> 
> 
> In CloudStack, no CPU topology is passed to VM, so one vCPU is one CPU 
> socket for VM.
> 
> Windows 2008 R2 VM do have limitation on CPU socket number, how many 
> vcpu did you assign to VM?  How many CPU sockets does your windows VM 
> support?
> 
> 
> 
> Anthony
> 
> 
> 
> > -----Original Message-----
> 
> > From: Marlon Davids [mailto:[email protected]]
> 
> > Sent: Wednesday, May 09, 2012 6:10 PM
> 
> > To: [email protected]
> 
> > Subject: RE: VM's freezing up
> 
> >
> 
> > Hey Anthony,
> 
> >
> 
> >  I see this behaviour on Windows 2008 R2 VM's. I have turned off C
> 
> > state already but still seeing the same issue.
> 
> >
> 
> > I honestly don’t recall seeing turbo mode in the bios but I'll take
> 
> > another look.
> 
> >
> 
> > Kind Regards,
> 
> > Marlon Davids
> 
> >
> 
> > .....................................................................
> ..
> 
> > .......................
> 
> > P: +44 (0)845 619 7444 | M: +44 (0)7827 333
> 
> > 583  E:  [email protected]<mailto:[email protected]>
> 
> > .....................................................................
> ..
> 
> > .......................
> 
> > W: www.umbeehosting.co.uk<http://www.umbeehosting.co.uk> Managed
> Hosting Specialists.
> 
> > .....................................................................
> ..
> 
> > .......................
> 
> >
> 
> >
> 
> > Umbee Ltd, TMS House, Cray Avenue, Orpington, Kent, BR5 3QB Company
> 
> > Registration Number. 06954604. VAT Registration Number
> 
> > 977446172
> 
> >
> 
> > This e-mail and the information it contains are confidential.
> 
> > If you have received this e-mail in error please notify the sender
> 
> > immediately.
> 
> > You should not copy it for any purpose or disclose its contents to
> any
> 
> > other person.
> 
> > The contents of this e-mail do not necessarily reflect the views of
> 
> > the company.
> 
> > E&OE
> 
> >
> 
> > P Please consider the environment before printing this email
> 
> >
> 
> >
> 
> > -----Original Message-----
> 
> > From: Anthony Xu [mailto:[email protected]]
> 
> > Sent: 10 May 2012 02:04
> 
> > To: [email protected]
> 
> > Subject: RE: VM's freezing up
> 
> >
> 
> > I saw this issue with ubuntu guest OS, upgrading to latest kernel 
> > for
> 
> > that release can fix this issue.
> 
> > Can you provide more information about the VM?
> 
> >
> 
> > Or it may be caused by advanced cpu C state or turbo mode, you may
> 
> > need to turn off C state or limit it to C2 and turn off turbo mode 
> > in
> BIOS.
> 
> >
> 
> >
> 
> >
> 
> > Anthony
> 
> >
> 
> >
> 
> >
> 
> > From: Marlon Davids [mailto:[email protected]]
> 
> > Sent: Wednesday, May 09, 2012 5:56 PM
> 
> > To: [email protected]
> 
> > Subject: VM's freezing up
> 
> >
> 
> > Hello,
> 
> >
> 
> > I'm seeing some issues with VM's freezing when we assign more than
> 
> > 1vCPU in service offering in Cloudstack.
> 
> >
> 
> > At first glance it looks like it's a Xenserver issue but I thought I
> 
> > would see if anyone has come across this before.
> 
> >
> 
> > Software = Xenserver 5.6 SP2
> 
> > Host = HP DL360 G6 2x E5505 2.0Ghz 72GB RAM all the bios tweaks done.
> 
> >
> 
> > Kind Regards,
> 
> > Marlon Davids
> 
> >
> 
> > .....................................................................
> ..
> 
> > .......................
> 
> > P: +44 (0)845 619 7444 | M: +44 (0)7827 333 583  E:
> 
> >
> [email protected]<mailto:[email protected]<mailto:[email protected].
> uk%3cmailto:[email protected]>>
> 
> > .....................................................................
> ..
> 
> > .......................
> 
> > W:
> www.umbeehosting.co.uk<http://www.umbeehosting.co.uk/<http://www.umbee
> h osting.co.uk%3chttp:/www.umbeehosting.co.uk/>> Managed
> 
> > Hosting Specialists.
> 
> > .....................................................................
> ..
> 
> > .......................
> 
> >
> 
> >
> [cid:[email protected]]<mailto:[cid:image001.png@01CD2E50.
> 02178690]>
> 
> > Umbee Ltd, TMS House, Cray Avenue, Orpington, Kent, BR5 3QB Company
> 
> > Registration Number. 06954604. VAT Registration Number 977446172
> 
> >
> 
> > This e-mail and the information it contains are confidential.
> 
> > If you have received this e-mail in error please notify the sender
> 
> > immediately.
> 
> > You should not copy it for any purpose or disclose its contents to
> any
> 
> > other person.
> 
> > The contents of this e-mail do not necessarily reflect the views of
> 
> > the company.
> 
> > E&OE
> 
> >
> 
> > P Please consider the environment before printing this email
> 

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