Can I provision half a core as a virtual CPU?

Posted by ramdaz on Server Fault See other posts from Server Fault or by ramdaz
Published on 2011-02-14T04:15:37Z Indexed on 2011/02/14 7:27 UTC
Read the original article Hit count: 507

Filed under:

virtualization

|

xen

|

Cloud

I am virtualization newbie. Please advise on these questions. Please note using a commercial VM software like Citrix or VMware is not a choice for me.

I have at my disposal a couple of 2x 4 core servers with 32 GB RAM. I need to create 16 VMs on each server to test some web applications.

Can I provision half a core as a virtual CPU for each VM? To my best knowledge I can't do so on Xen. Is it possible on KVM or some other free open source VM solution?
If it's not possible to assign half a core, how do I ensure that uniform processing power is available for all VMs?
Since the job is to create separate instances for hosting 16 web apps in a physical server, do you recommend setting up a private cloud using Ubuntu Enterprise Cloud as a better option?
Is there HA solution under KVM, like Remus for Xen?

© Server Fault or respective owner

Related posts about virtualization

Storage Virtualization, Redux: Arise File Virtualization

as seen on Internet.com - Search for 'Internet.com'
As virtual storage finds its way into enterprises, file-level and block-level virtualization are most talked-about approaches. Block-level virtualization has already captured the hearts of many firms. Now, file-level virtualization is gearing up for a second coming. >>> More
Free Oracle Special Edition eBook - Server Virtualization for Dummies

as seen on Oracle Blogs - Search for 'Oracle Blogs'
Oracle has released a quick and easy-to-read guide on Oracle Virtualization. Now available is "Server Virtualization for Dummies," an Oracle Special Edition eBook. Need to virtualize, but not sure where to start? Virtualization should make things simpler, not more complex. … >>> More
Reducing Virtualization's Storage Demands

as seen on Internet.com - Search for 'Internet.com'
They're early in development, but some new technologies hold promise for reducing server virtualization's demand on storage environments. >>> More
Storage Virtualization Gets Serious

as seen on Internet.com - Search for 'Internet.com'
Virtually Speaking: A torrent of products are being unleashed to meet the challenges of backing up virtual machines. From cloud storage to golden image management, virtualization technologies for storage are on the move. >>> More
Helping Storage Keep Up With Server Virtualization

as seen on Internet.com - Search for 'Internet.com'
If you virtualize your server environment without taking storage into consideration, your performance will likely suffer. >>> More

Related posts about xen

Difference between Xen PV, Xen KVM and HVM?

as seen on Server Fault - Search for 'Server Fault'
Hi, I know that Xen is usually better than OpenVZ as the provider cannot oversell in Xen. However, what is the difference between Xen PV, Xen KVM and HVM (I was going through this provider's specs? Which one is better for what purposes and why? Edit: For an end-user who will just be hosting… >>> More
New XEN Server, Intel i7, Errors were encountered while processing: xen-linux-system-amd64

as seen on Server Fault - Search for 'Server Fault'
I have just got a new machine to run XEN VM's on, it has an Intel i7 processor: - Intel Haswell Core i7-4790 3.6GHz 8MB LGA1150 I have setup the host with the current 6.2.0 I have set up a new Debian 7 64bit VM and any package I try and run fails with the following errors: Errors were encountered… >>> More
Crashing HVM domain, what do I do?

as seen on Server Fault - Search for 'Server Fault'
My DomUs on a Xen 3.4 on an RHEL5 are crashing when too much memory is needed: (XEN) p2m_pod_demand_populate: Out of populate-on-demand memory! (XEN) domain_crash called from p2m.c:1091 (XEN) Domain 15 (vcpu#3) crashed on cpu#2: (XEN) ----[ Xen-3.4.0 x86_64 debug=n Not tainted ]---- (XEN) CPU:… >>> More
Xen won't start after it had been working

as seen on Server Fault - Search for 'Server Fault'
I've been setting up this Debian Stable system with a dom0 and 3 domUs. It was working fine for several days, and I'm almost ready to deploy it to the rack. But last night I shut it down with all three domUs still running for the first time, and today when I started it up, xend won't start. In… >>> More
Linux HA cluster w/Xen, Heartbeat, Pacemaker. domU does not failover to secondary node

as seen on Server Fault - Search for 'Server Fault'
I am having the followig problem with an OenSuSE + Heartbeat + Pacemaker + Xen HA cluster: when the node a Xen domU is running on is "dead" the Xen domU running on it is not restarted on the second node. The cluster is setup with two nodes, each running OpenSuSE-11.3, Heartbeat 3.0, and Pacemaker… >>> More