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WP/What are containers

200 bytes removed, 20:48, 8 May 2015
io bandwidth limit is avail in openvz
= OpenVZ Linux Containers technology whitepaper =
<s><big><big><b>{{PDFlink|[[Media:What are containers.pdf|Download in PDF]]}}</b></big></big></s>
 
OpenVZ is an open source virtualization technology for Linux that enables the partitioning of a single physical Linux machine into multiple smaller independent units called containers.
* '''Disk I/O priority'''. Containers compete for I/O operations, and can affect each other if they use the same disk drive. OpenVZ introduces a per-container I/O priority, which can be used to e.g. decrease the "bad guy" I/O rate in order to not trash the other containers.
* '''Disk I/O bandwidth'''. I/O bandwidth (in bytes per second) can be limited per-container (currently only available in commercial Parallels Virtuozzo Containers).
=== Memory ===
* '''DHCP''' and dynamic IP addresses are possible
* Broadcasting have negative performance impact (it is delivered separately to each CT)
*
==== Real network device in a container ====
=== Performance and density ===
* See [[Performance]]* Density: {{FIXME|need to add datagraphs}}
=== Limitations ===

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