docs(design): evaluate PARALLEL_STAT_THRESHOLD for NFS/FUSE (#1084)#3923
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Design note motivating per-filesystem thresholds for the receiver's parallel stat refresh. Captures detection strategy via statfs magic numbers, a starting threshold table, an implementation sketch with a per-device cache, and the misdetection risks on bind mounts and overlay filesystems.
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…3923) Design note motivating per-filesystem thresholds for the receiver's parallel stat refresh. Captures detection strategy via statfs magic numbers, a starting threshold table, an implementation sketch with a per-device cache, and the misdetection risks on bind mounts and overlay filesystems.
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Summary
PARALLEL_STAT_THRESHOLDvalues.statfs.f_type(orf_fstypenameon macOS,GetVolumeInformationWon Windows) detection infast_io::fs_kindand anFsKind -> thresholdtable that drops the gate to 8 on NFS/SMB and 16 on FUSE while preserving 64 for local fast filesystems.Test plan
detect_fs_kindand integration coverage for the receiver call site.