Annotation of wikisrc/projects/project/buffer-flowcontrol.mdwn, revision 1.1

1.1     ! dholland    1: [[!template id=project
        !             2: 
        !             3: title="Flow control for writing to the file system"
        !             4: 
        !             5: contact="""
        !             6: [tech-kern](mailto:tech-kern@NetBSD.org)
        !             7: """
        !             8: 
        !             9: category="filesystems"
        !            10: difficulty="hard"
        !            11: duration="2 months"
        !            12: 
        !            13: description="""
        !            14: Apply TCP-like flow control to processes writing to the filesystem (put them to
        !            15: sleep when there is "congestion"), to avoid enormous backlogs and provide more
        !            16: fair allocation of disk bandwidth.
        !            17: 
        !            18: This is a nontrivial undertaking as the I/O path wasn't intended to
        !            19: support this type of throttling. Also, the throttle should be
        !            20: underneath all caching (there is nothing to be gained by throttling
        !            21: cached accesses) but by that point attributing I/O actions to specific
        !            22: processes is awkward.
        !            23: """
        !            24: ]]

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