Annotation of wikisrc/projects/project/policy_plugins.mdwn, revision 1.1

1.1     ! jmmv        1: [[!template id=project
        !             2: 
        !             3: title="Installable cache control (or scheduling policies)"
        !             4: 
        !             5: contact="""
        !             6: [tech-kern](mailto:tech-kern@NetBSD.org)
        !             7: """
        !             8: 
        !             9: category="kernel"
        !            10: difficulty="medium"
        !            11: 
        !            12: description="""
        !            13: The policy code in the kernel that controls file caching and readahead behavior
        !            14: is necessarily one-size-fits-all, and the knobs available to applications to
        !            15: tune it, like madvise() and posix_fadvise(), are fairly blunt
        !            16: hammers. Furthermore, it has been shown that the overhead from user<->kernel
        !            17: domain crossings makes syscall-driven fine-grained policy control ineffective.
        !            18: 
        !            19: Is it possible to create a BPF-like tool (that is, a small code generator with
        !            20: very simple and very clear safety properties) to allow safe in-kernel
        !            21: fine-grained policy control?
        !            22: 
        !            23: Caution: this is a research project.
        !            24: """
        !            25: ]]

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