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| − | [[User Beancounters]] have default units which are used when viewing and setting the parameter values. When setting the values for some parameters, you are able to specify [[#Overriding Default Units|different units]] thereby avoiding the need to do manual conversion of units and making life a little easier!
| + | == UBC default units == |
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| − | {{UBC toc}}
| + | # entries which name has word 'page' are measured in memory pages (4kb on x86 and x86-64, 16kb for IA64). These are privvmpages, oomguarpages and others. |
| | + | # entries with names like 'num*' are measured in items. i.e. numproc - number of processes, numiptent - number of iptables entries. |
| | + | # other entries like kmemsize, tcprcvbuf/tcpsndbuf are measured in bytes |
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| − | == Pages == | + | == Overriding default units == |
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| − | Parameters which have the suffix "page" are measured in numbers of [[memory page|pages]]. These include:
| + | You can set parameter units implicitly when appropriate, for example: |
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| − | * [[UBC primary parameters|Primary Parameters]]
| + | * Set kmemsize limit to 512 Kb |
| − | ** <code>[[vmguarpages]]</code>
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| − | | |
| − | * [[UBC secondary parameters|Secondary Parameters]]
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| − | ** <code>[[privvmpages]]</code>
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| − | ** <code>[[oomguarpages]]</code>
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| − | | |
| − | * [[UBC auxiliary parameters|Auxiliary Parameters]]
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| − | ** <code>[[lockedpages]]</code>
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| − | ** <code>[[shmpages]]</code>
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| − | ** <code>[[physpages]]</code>
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| − | ** <code>[[swappages]]</code>
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| − | | |
| − | When using [[vzctl]] to set these beancounter parameters, you can override the default units of "pages" by using a [[#Overriding Default Units|valid suffix]].
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| − | == Numbers of Items ==
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| − | | |
| − | Parameters with the prefix "num" are measured in numbers of items:
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| − | | |
| − | * [[UBC primary parameters|Primary Parameters]]
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| − | ** <code>[[numproc]]</code>
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| − | ** <code>[[numtcpsock]]</code>
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| − | ** <code>[[numothersock]]</code>
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| − | | |
| − | * [[UBC secondary parameters|Secondary Parameters]]
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| − | ** None
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| − | | |
| − | * [[UBC auxiliary parameters|Auxiliary Parameters]]
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| − | ** <code>[[numfile]]</code>
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| − | ** <code>[[numflock]]</code>
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| − | ** <code>[[numpty]]</code>
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| − | ** <code>[[numsiginfo]]</code>
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| − | ** <code>[[numiptent]]</code>
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| − | == Bytes ==
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| − | | |
| − | Other parameters are measured in bytes:
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| − | | |
| − | * [[UBC primary parameters|Primary Parameters]]
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| − | ** None
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| − | | |
| − | * [[UBC secondary parameters|Secondary Parameters]]
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| − | ** <code>[[kmemsize]]</code>
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| − | ** <code>[[tcprcvbuf]]</code>
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| − | ** <code>[[tcpsndbuf]]</code>
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| − | ** <code>[[othersockbuf]]</code>
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| − | ** <code>[[dgramrcvbuf]]</code>
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| − | | |
| − | * [[UBC auxiliary parameters|Auxiliary Parameters]]
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| − | ** <code>[[dcachesize]]</code>
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| − | | |
| − | When using [[vzctl]] to set these beancounter parameters, you can override the default units of "bytes" by using a [[#Overriding Default Units|valid suffix]].
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| − | == Overriding Default Units ==
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| − | | |
| − | When using [[vzctl]] to set beancounter parameters which use "Pages" or "Bytes" as the default units, alternative units may be specified using one of the following suffixes:
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| − | | |
| − | {| class="wikitable"
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| − | !Suffix
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| − | ! Alternative Suffix
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| − | ! Units
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| − | |-
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| − | | g || G || gigabytes
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| − | |-
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| − | | m || M || megabytes
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| − | |-
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| − | | k || K || kilobytes
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| − | |-
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| − | | p || P || [[memory page|pages]]
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| − | |}
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| − | | |
| − | === Examples ===
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| − | | |
| − | The following are some examples to demonstrate the use of different units when specifying the value of a parameter. Where <code>$CTID</code> is the container ID.
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| − | | |
| − | * Set <code>kmemsize</code> limit to 512 KB | |
| | <pre> | | <pre> |
| − | # vzctl set $CTID --kmemsize 512k | + | # vzctl set --kmemsize 512k |
| | </pre> | | </pre> |
| | | | |
| − | * Set <code>privvmpages</code> limit to 256 MB | + | * Set privvmpages limit to 256 Mb |
| | <pre> | | <pre> |
| − | # vzctl set $CTID --privvmpages 256m | + | # vzctl set --privvmpages 256m |
| | </pre> | | </pre> |
| | | | |
| − | * Set <code>tcprcvbuf</code> limit to 1000 pages (totals to almost 4 MB on x86) | + | * Set tcprcvbuf limit to 1000 pages (totals to almost 4 Mb on x86) |
| | <pre> | | <pre> |
| − | # vzctl set $CTID --tcprcvbuf 1000p | + | # vzctl set --tcprcvbuf 1000p |
| | </pre> | | </pre> |
| − |
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| − | [[Category: HOWTO]]
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