On 01/08/12 20:10, Jim Klimov wrote:

Is it true or false that: ZFS might skip the cache and
go to disks for "streaming" reads?

I don't believe this was ever suggested.  Instead, if
data is not already in the file system cache and a
large read is made from disk should the file system
put this data into the cache?

BTW, I chose the term streaming to be a subset
of sequential where the access pattern is sequential but
at what appears to be artificial time intervals.
The suggested pre-read of the entire file would
be a simple sequential read done as quickly
as the hardware allows.
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