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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-users] Xen & netperf
First, I apologize if this message has been received multiple times. I'm having problems subscribing to this mailing list: Hi xen-users, I am trying to decide whether I should run a game server inside a Xen domain. My primary reason for wanting to virtualize is because I want to isolate this environment from the rest of my server. I really like the idea of isolating the game server from the rest of the service on the box. There will only be a single virtual machine, and I am for all practical purposes, the only person with access to the box. Anyway, the game server is more network intensive than CPU intensive, and that will be my primary criteria for decided whether I virtualize. I ran some naive benchmarks with netperf on my Dom0 (debian lenny w/ xen 3.2.1), DomU, and my Linux box at home. Dom0 and DomU are connected by a public network (100 Mbps link) and a private network (1 Gbps link). All netperf tests were run with defaults (w/o any extra options). Dom0 to Dom0 (local) TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to () port 0 AF_INET : demo Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec 87380 16384 16384 10.00 5859.30 DomU to DomU (local) TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to () port 0 AF_INET : demo Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec 87380 16384 16384 10.00 3482.77 Dom0 to DomU (via a 100 Mbps uplink) TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to () port 0 AF_INET : demo Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec 87380 16384 16384 10.09 91.37 DomU to Dom0 (via a 100 Mbps uplink) TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to () port 0 AF_INET : demo Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec 87380 16384 16384 10.10 91.11 Dom0 to DomU (via a 1 Gbps uplink - private network) TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to () port 0 AF_INET : demo Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec 87380 16384 16384 10.00 1621.90 DomU to Dom0 (via a 1 Gbps uplink - private network) TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to () port 0 AF_INET : demo Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec 87380 16384 16384 10.00 8655.93 Home to Dom0 (Home network is 1 Mbps up) TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to () port 0 AF_INET : demo Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec 87380 16384 16384 13.81 0.96 Home to DomU (Home network is 1 Mbps up) TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to () port 0 AF_INET : demo Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec 87380 16384 16384 12.26 0.96 Dom0 to Home (Home network is 10 Mbps down) TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to () port 0 AF_INET : demo Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec 87380 16384 16384 10.85 16.44 DomU to Home (Home network is 10 Mbps down) TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to () port 0 AF_INET : demo Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec 87380 16384 16384 10.85 11.03 So, what do these results mean? Of course, my home network connection is asymmetrical, so I can guess why any connection with my home computer was limited at 10 or 1 Mbps speeds. And, for the 100 Mbps link between Dom0 to DomU, I can understand a pretty consistent 91 Mbps. For testing, I included the 1 Gbps private link between Dom0 and DomU, but I will not be using that link for the server. Does this mean that despite any performance from running netperf from within a Xen virtual machine, that since my uplink to the Internet is only 100 Mbps it doesn't really matter (since, both Dom0 and DomU were pushing the 100 Mbps throughput)? Are there any other benchmarks that I should run before making my decision? Hope someone can help me interpret these results! Thanks, Tommy _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-users
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