Linux: Automatic Kernel Tunables
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Nadia Derbey posted a set of patches to the Linux Kernel Mailing List titledAKT, Automatic Kernel Tunables, explaining,"this is a series of patches that introduces a feature that makes the kernel automatically change the tunables values as it sees resources running out." The kernel portion of the AKT framework is described as providing sysfs interfaces for registering tunables, and for activating the automatic tuning of registered tunables. Nadia explains the second feature,"it can be called during resource allocation to tune up, and during resource freeing to tune down the registered tunable." The userland portion of the framework provides an interface for configuring whether or not a tunable should be set automatically.The default automatic adjustment routine provided by the patches simply allow a tunable to be configured with a minimum and maximum values, as well as a thresholds.
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