> This is not a true statement. If the primarycache
> policy is set to the default, all data will
> be cached in the ARC.

Richard, you know this stuff so well that I am hesitant to disagree with you.  
At the same time, I have seen this myself, trying to load video files into 
L2ARC without success.

> The ARC statistics are nicely documented in arc.c and
> available as kstats.

And I looked in the source.  My C is a little rusty, yet it appears that 
prefetch items are not stored in L2ARC by default.  Prefetches will satisfy a 
good portion of sequential reads but won't go to L2ARC.
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