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| = Platform Setup = | | = Platform Setup = |
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| All machines are relatively stock Fedora 14 x86_64 installations, updated as of November 9, 2010. Both machines, and the VMs inside them, were created using a very slightly modified version of the kickstart file below. Modifications are only to host names, user accounts and similar. Packages should be identical. | | All machines are relatively [[RHEL|Red Hat Enterprise Linux]] version 6.0 x86_64 installations, updated as of November 15, 2010. Both machines, and the VMs inside them, were created using a very slightly modified version of the kickstart file below. Modifications are only to host names, user accounts, etc. Packages should be identical. |
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| * [https://alteeve.com/files/bench/generic_server.ks generic_server.ks] | | * [https://alteeve.com/files/bench/generic_server_rhel6.ks generic_server_rhel6.ks] |
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| == Xen ==
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| The stock Xen 4.0.1 hypervisor is used directly from the default repositories. The [[dom0]] kernel is available below and is a very slightly modified version of [http://fedorapeople.org/~myoung/dom0/x86_64/ myoung]'s kernel. The only change of note is that the source was recompiled against Fedora 14 and that the version was changed from <span class="code"></span><span class="code">xendom0</span> to <span class="code">dom0_an1</span>.
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| If it works for you, thank Michael. If it breaks, blame me.
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| * [https://alteeve.com/files/bench/kernel-2.6.32.25-172.dom0_an1.fc14.x86_64.rpm kernel-2.6.32.25-172.dom0_an1.fc14.x86_64.rpm]
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| Xen was installed using these commands:
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| <source lang="bash">
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| yum -y install xen.x86_64 xen-doc.x86_64 libvirt.x86_64 virt-top.x86_64 virt-mem.x86_64 qemu.x86_64 qemu-img.x86_64
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| rpm -ivh https://alteeve.com/files/bench/kernel-2.6.32.25-172.dom0_an1.fc14.x86_64.rpm
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| </source>
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| Please see [[https://alteeve.com/index.php/Two_Node_Fedora_14_Cluster#Post_AN.21Cluster_dom0_Install_Configuration|this section]] of the [[Two_Node_Fedora_14_Cluster|Fedora 14 cluster]] tutorial on post-kernel install steps needed to make the dom0 kernel bootable.
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| == KVM ==
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| KVM is installed directly from the default Fedora repositories using the commands below.
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| <source lang="bash">
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| yum -y install kvm
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| </source>
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| = Tests =
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| All tests are run as a "set" of three tests with the average being used as the final value. Tests are run on three systems:
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| * Stock os (not virtualized) - Baseline
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| * KVM-based VM
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| * Xen-based VM
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| All VMs exist on a simple [[LVM]] logical volume of 50GB. All VMs are provisioned before any tests are started.
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| Tests within the VMs are run in the following setups. When two and three VMs are run simultaneously, tests are run concurrently across VMs.
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| * One set with only one VM (3GB of RAM and 3 dedicated cores).
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| * One set with two VMs (1.5GB of RAM and 1 dedicated core).
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| * One set with three VMs (0.75GB of RAM and 1 dedicated core).
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| The tests are:
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| * Compile a common kernel source RPM.
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| * bonnie++
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| * Copy a 3.3 [[GB]] [[ISO]] image from a commonly-configured source on the local gigabit LAN.
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| == bonnie++ ==
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| <source lang="bash">
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| <bonnie++ command line>
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| </source>
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| == Kernel Compile ==
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| The source RPM used is the same one used to generate the dom0 kernel. Prior to the compile, the following packages are installed to meet dependency requirements.
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| <source lang="bash">
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| yum -y groupinstall "Development Libraries"
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| yum -y groupinstall "Development Tools"
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| yum install xmlto asciidoc elfutils-libelf-devel
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| wget -c https://alteeve.com/files/bench/kernel-2.6.32.25-172.dom0_an1.fc14.src.rpm
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| rpm -ivh kernel-2.6.32.25-172.dom0_an1.fc14.src.rpm
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| </source>
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| * [https://alteeve.com/files/bench/kernel-2.6.32.25-172.dom0_an1.fc14.src.rpm kernel-2.6.32.25-172.dom0_an1.fc14.src.rpm]
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| | Post install, the packages below were installed. |
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| <span class="code"></span> | | <span class="code"></span> |
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AN!Wiki :: Xen vs. KVM Benchmark - Nov. 2010
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This is an attempt at an impartial performance comparison between the Xen and KVM hypervisors. All component specifications and software versions are up to date as of Nov. 09, 2010.
Specs
I use servers with the following specifications. They are not impressive, but they are consistent.
- Specs - ASUS M4A785T-M/CSM
- Specs - AMD Athlon II X4 600e Processor
- Specs - Kingston KVR1333D3N9K2/4GB, 4GB (2x2GB) DDR3-1333, Non-ECC
- Specs - Seagate ST9500420ASG
Platform Setup
All machines are relatively Red Hat Enterprise Linux version 6.0 x86_64 installations, updated as of November 15, 2010. Both machines, and the VMs inside them, were created using a very slightly modified version of the kickstart file below. Modifications are only to host names, user accounts, etc. Packages should be identical.
Post install, the packages below were installed.
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