[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Xen-devel] Is there an issue with turning off "scrubbing free RAM" on boot with Xen 4.1.3



On Wed, Oct 09, 2013 at 11:24:22AM -0700, Roddy Rodstein wrote:
>    Greetings,
> 
>    Thank you in advance for your support!
> 
>    Our HP Xen 4.1.3 servers have 1TB of RAM, each Xen servers take 20 minutes
>    to boot largely due to the "scrub free RAM" phase. If/when we have dom0
>    failures and HA kicks-in, we would like to reduce the boot time to make
>    the resource quickly available, perhaps using the no-bootscrub attribute
>    in grub.conf.
> 
>    Could you please share your comments about turning of RAM scrubbing, i.e.
>    have you seen any consequences, security issues and/or threats, red flags,
>    etc...?
> 
>    We have asked the same question at the commercially supported Xen forums,
>    i.e. Oracle and Citrix, as well as to each aforementioned support team,
>    and have not received a lick of meaningful information.
>

If that's a custom build of Xen you can apply the patches that optimize the 
boot time memory scrubbing,
they've been posted to xen-devel a couple of times.. 

-- Pasi
 
> 
> 
>    Respectfully,
> 
>    Roddy
> 
>  --
>  Roddy Rodstein  CEO and Founder
>  Mokum Solutions, Inc.
>  Phone:  (415) 252-9164
>  E-mail: [1]roddy.rodstein@xxxxxxxxxxxxxxxxxx  Web: 
> [2]http://mokumsolutions.com and [3]http://itnewscast.com
>  Follow me on Twitter: [4]http://twitter.com/itnewscast
>  Up-to-date Oracle news by Mokum: [5]http://itnewscast.com/
>  CONFIDENTIAL  "The information contained in this e-mail and any attachment 
> is confidential. It is intended only for the named addressee(s). If you are 
> not the named addressee please notify the sender immediately and do not 
> disclose, copy or distribute the contents to any other person other than the 
> intended addressee(s)"
> 
> References
> 
>    Visible links
>    1. mailto:roddy.rodstein@xxxxxxxxxxxxxxxxxx
>    2. http://mokumsolutions.com/
>    3. http://itnewscast.com/
>    4. http://twitter.com/itnewscast
>    5. http://itnewscast.com/

> begin:vcard
> fn:Roddy Rodstein
> n:Rodstein;Roddy
> email;internet:roddy.rodstein@xxxxxxxxxxxxxxxxxx
> tel;work:4152529164
> tel;cell:4158602851
> version:2.1
> end:vcard
> 

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


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


 


Rackspace

Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.