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openzfs / zfs

OpenZFS on Linux and FreeBSD
https://openzfs.github.io/openzfs-docs
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Load-modeled predictive DMU/ARC optimization #15670

Open sempervictus opened 6 months ago

sempervictus commented 6 months ago

Describe the feature would like to see added to OpenZFS

The kernel ML project is using an in-kernel model to train on IO patterns and optimize access/code paths to suit actual needs. Extending this function or reproducing in a license-compatible manner into ZFS should provide similar benefits for DMU/ARC/etc, potentially coordinated with the underlying (block) IO layer (presuming object-style "vdevs" get in the mix before this sees light of day).

How will this feature improve OpenZFS?

Optimization of prefetch, ARC, block/IO sizing/batching/timing based on current workload (and possibly "profiles" like "backup activity")

ryao commented 6 months ago

The Apache 2.0 license used is compatible with the CDDL (although I am assuming that the entire thing is under the Apache 2.0 license).