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

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