[cisco-voip] help explaining UC on UCS CPU requirements

[Lelio Fulgenzi]

ok, this note answers my question... sorry for the traffic. 

UC apps do not support CPU oversubscription. One VM vCPU must map to one physical core (not one logical core) ( click here for details). 

--- 
Lelio Fulgenzi, B.A. 
Senior Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1 
(519) 824-4120 x56354 (519) 767-1060 FAX (ANNU) 
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 
Cooking with unix is easy. You just sed it and forget it. 
- LFJ (with apologies to Mr. Popeil) 


----- Original Message -----
From: "Lelio Fulgenzi" <lelio at uoguelph.ca> 
To: cisco-voip at puck.nether.net 
Sent: Thursday, August 9, 2012 5:52:26 PM 
Subject: Re: [cisco-voip] help explaining UC on UCS CPU requirements 




OK, my reading was wrong for the C240 M3S. It has a total of 16 CPU, so 16x2.7GHz. 

So either a total of 8 OVAs based on 1:1 vCPU:pCore, or 12 based on reservation. 

The more I'm thinking about it, I'm thinking it's 8 since you want some extra CPU cycles for each server. 


----- Original Message -----
From: "Lelio Fulgenzi" <lelio at uoguelph.ca> 
To: cisco-voip at puck.nether.net 
Sent: Thursday, August 9, 2012 3:59:03 PM 
Subject: help explaining UC on UCS CPU requirements 



I'm wondering if someone can help explain some of the UC on UCS CPU requirements that I'm seeing. I getting a little confused by some of the terminology and stuff in brackets. 

When I read the OVA requirements for a 7500 user node, it says 2 vCPU (with 3600MHz reservation) and physical load calibrated to E5540 2.53 GHz. 

If I want to install this OVA on a UCS C240 M3S (SFF) TRC#1 which has Dual E5-2680 (8-core, 2.7 GHz) do I do some sort of reservation of total CPU Hz available? Or is it simply a 1:1 core assigned, vCPU to pCPU? 

The total Hz available is 8x2.7G=21.6GHz which means I could install 21.6/3.6=6 of these OVAs? 

Or do you do CPU math, 8/2 = 4 OVAs allowed to be installed? 

The math and disk space calculations seem much easier. 



--- 
Lelio Fulgenzi, B.A. 
Senior Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1 
(519) 824-4120 x56354 (519) 767-1060 FAX (ANNU) 
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 
Cooking with unix is easy. You just sed it and forget it. 
- LFJ (with apologies to Mr. Popeil) 



_______________________________________________ 
cisco-voip mailing list 
cisco-voip at puck.nether.net 
https://puck.nether.net/mailman/listinfo/cisco-voip 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://puck.nether.net/pipermail/cisco-voip/attachments/20120809/4097c8d2/attachment.html>