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There are several parameters tuning which the OpenVZ administrator can change the CPU usage of a CT. Usually one sets these parameters with the aid of the <code>vzctl</code> utility. But sometimes it can be useful to modify these parameters directly, without using <code>vzctl</code>. For example, it can be required by developers who want to implement an in-place solution to control a particular virtualization system based on OpenVZ. That is why the Fairsched API is introduced. | There are several parameters tuning which the OpenVZ administrator can change the CPU usage of a CT. Usually one sets these parameters with the aid of the <code>vzctl</code> utility. But sometimes it can be useful to modify these parameters directly, without using <code>vzctl</code>. For example, it can be required by developers who want to implement an in-place solution to control a particular virtualization system based on OpenVZ. That is why the Fairsched API is introduced. | ||
− | The '''Fairsched API''' is the set of system calls that can be used (and that are, in fact, used in the <code>vzctl</code> utility) for altering various parameters of the [[CPU Fair scheduler]], such as <code>cpuunits</code>, <code>cpulimit</code>, <code>cpus</code>, and <code>cpumask</code>. The article is targeted | + | The '''Fairsched API''' is the set of system calls that can be used (and that are, in fact, used in the <code>vzctl</code> utility) for altering various parameters of the [[CPU Fair scheduler]], such as <code>cpuunits</code>, <code>cpulimit</code>, <code>cpus</code>, and <code>cpumask</code>. The article is targeted to describe the API. |
== CPU weight == | == CPU weight == |