For several times now I've seen statements on this list implying
that a dedicated ZIL/SLOG device catching sync writes for the log,
also allows for more streamlined writes to the pool during normal
healthy TXG syncs, than is the case with the default ZIL located
within the pool.
Is this understanding correct? Does it apply to any generic writes,
or only to sync-heavy scenarios like databases or NFS servers?
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