Multiple hypervisors are for better performance. Load balancing across multiple CPU's.
Regards, Tyson Scott - CCIE #13513 R&S, Security, and SP Technical Instructor - IPexpert, Inc. Mailto: <mailto:[email protected]> [email protected] Telephone: +1.810.326.1444, ext. 208 Live Assistance, Please visit: <http://www.ipexpert.com/chat> www.ipexpert.com/chat eFax: +1.810.454.0130 IPexpert is a premier provider of Self-Study Workbooks, Video on Demand, Audio Tools, Online Hardware Rental and Classroom Training for the Cisco CCIE (R&S, Voice, Security & Service Provider) certification(s) with training locations throughout the United States, Europe, South Asia and Australia. Be sure to visit our online communities at <http://www.ipexpert.com/communities> www.ipexpert.com/communities and our public website at <http://www.ipexpert.com/> www.ipexpert.com From: nicholas golden [mailto:[email protected]] Sent: Friday, April 09, 2010 12:36 PM To: Matlock, Kenneth L; Cristian Nedelcu; Tyson Scott Cc: R&S OSL Subject: Re: [OSL | CCIE_RS] Prerequisites for GNS3 R&S/SP Dynamips .NETfile? Remember that each time something is virtualized, there is a cost associated with the virtualization of that instance. Take VMware for example, if you have 2 CPU's and lets say you install 2 instances, and both run the same OS say win2003 or something. Let's say you assign each core to each instance and slice up the ram. Let's say that that ram is 2 gigs, so you give 1 gig to each. So now you have each OS pulling down resources from it's core that was assigned. That's services and start up items etc. So you could say ok that's 3 to 5% cpu overhead. Then you have the instance running for VMware, another small %. Then of course you have the ram - the rame is split and the start up for each OS will take some of that ram on each instance. So really, you have 2x OS taking 200MB on start up that's 200 from 1000 leaving 800 per instance. Let's say you have one installation, 2 cores and 2 gigs ram - no vmware. Now you have 200 MB of ram used and that 3 to 5% used total of both cores on startup. That's half the amount. Now I realize you are not speaking to this item, you are talking about hypervisors - just realize there is a cost associated with each hypervisor. I personally run one OS and run all instances over my quadcore and let it spread it out. Hopefully, that long story put it into perspective :) lol. _____ From: "Matlock, Kenneth L" <[email protected]> To: Cristian Nedelcu <[email protected]>; Tyson Scott <[email protected]> Cc: R&S OSL <[email protected]> Sent: Fri, April 9, 2010 8:49:53 AM Subject: Re: [OSL | CCIE_RS] Prerequisites for GNS3 R&S/SP Dynamips .NETfile? If I had to guess, I’d say it’s to allow you to take advantage of multiple cores. 1 hypervisor = 1 CPU used for all chassis. If you have a dual-core machine, create 2 of them to let the CPU load get spread out across both? Ken Matlock Network Analyst Exempla Healthcare (303) 467-4671 [email protected] _____ From: [email protected] [mailto:[email protected]] On Behalf Of Cristian Nedelcu Sent: Friday, April 09, 2010 9:45 AM To: Tyson Scott Cc: R&S OSL Subject: Re: [OSL | CCIE_RS] Prerequisites for GNS3 R&S/SP Dynamips .NETfile? sorry Scott..i was wrong I wanted to ask why multiple instances of hypervisors? On Fri, Apr 9, 2010 at 6:38 PM, Cristian Nedelcu <[email protected]> wrote: Scott, why would you use external hypervisors? Click on External hypervisor and duplicate the Settings as shown in Fig-10. 1. Host 127.0.0.1 On Fri, Apr 9, 2010 at 6:03 PM, Tyson Scott <[email protected]> wrote: Syed, Have you read our blog post on this? http://blog.ipexpert.com/gns3-on-windows-7-the-ipexpert-way/ Regards, Tyson Scott - CCIE #13513 R&S, Security, and SP Technical Instructor - IPexpert, Inc. Mailto: [email protected] Telephone: +1.810.326.1444, ext. 208 Live Assistance, Please visit: www.ipexpert.com/chat eFax: +1.810.454.0130 IPexpert is a premier provider of Self-Study Workbooks, Video on Demand, Audio Tools, Online Hardware Rental and Classroom Training for the Cisco CCIE (R&S, Voice, Security & Service Provider) certification(s) with training locations throughout the United States , Europe, South Asia and Australia . Be sure to visit our online communities at www.ipexpert.com/communities and our public website at www.ipexpert.com <http://www.ipexpert.com/> From: [email protected] [mailto:[email protected]] On Behalf Of Syed Zaidi Sent: Friday, April 09, 2010 8:07 AM To: R&S OSL Subject: [OSL | CCIE_RS] Prerequisites for GNS3 R&S/SP Dynamips .NET file? Hi, What are the prequisites for loading CCIE: R&S/SP Dynamips .NET files, which are part of the CCIE R&S 4.0 workbook volume1? Is there any guide on how to load this files? Like what IOS version, Router models....? Pls forward if any info available. Thanks & Regards, Syed _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com <http://www.ipexpert.com/>
_______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
