Editing UBC systemwide configuration
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containers at the given time. | containers at the given time. | ||
In general, low utilization values mean that the system is under-utilized. | In general, low utilization values mean that the system is under-utilized. | ||
− | Often, it means that the system is capable of supporting more | + | Often, it means that the system is capable of supporting more Virtual |
− | if the existing containers continue to maintain | + | Environment if the existing containers continue to maintain |
the same load and resource consumption level. | the same load and resource consumption level. | ||
High utilization values (in general, more than <code>1</code>) | High utilization values (in general, more than <code>1</code>) | ||
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overcommitted. | overcommitted. | ||
If the system runs a lot of containers, | If the system runs a lot of containers, | ||
− | it is usually acceptable to have some overcommitment, because it is unlikely that all | + | it is usually acceptable to have some overcommitment, because it is unlikely that all Virtual |
+ | Environments will request resources at the same time. | ||
However, higher commitment levels (as discussed below for each resource | However, higher commitment levels (as discussed below for each resource | ||
individually) will cause containerss to experience failures to | individually) will cause containerss to experience failures to | ||
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The normal commitment level is about <math>0.8</math>—<math>1</math>. | The normal commitment level is about <math>0.8</math>—<math>1</math>. | ||
− | Commitment levels more than <math>1</math> means that the | + | Commitment levels more than <math>1</math> means that the Virtual Environmens are |
guaranteed more memory than the system has. | guaranteed more memory than the system has. | ||
Such overcommitment is strongly not recommended, because in that case | Such overcommitment is strongly not recommended, because in that case | ||
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It is better to guarantee containers less and have less commitment | It is better to guarantee containers less and have less commitment | ||
− | levels than to | + | levels than to accidently overcommit the system by memory plus swap. |
If the system has spare memory and swap, containers will | If the system has spare memory and swap, containers will | ||
transparently be able to use the memory and swap above their guarantees. | transparently be able to use the memory and swap above their guarantees. |