On Jul 29, 2012, at 7:07 AM, Jim Klimov wrote: > Hello, list > > 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.
I'm not sure where you are heading here. Space for the data in the pool is allocated based on the policies of the pool. > Is this understanding correct? Does it apply to any generic writes, > or only to sync-heavy scenarios like databases or NFS servers? Async writes don't use the ZIL. -- richard -- ZFS Performance and Training richard.ell...@richardelling.com +1-760-896-4422
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