the funny thing is that I'm showing a performance improvement over write 
caches + cache flushes.

The only way these pools are being accessed is over NFS. Well, at least 
the only way I care about when it comes to high performance.

I'm pretty sure it would give a performance hit locally, but I don't 
care about local disk performance, I only care about the performance 
over NFS.

Anton B. Rang wrote:
> If all write caches are truly disabled, then disabling the cache flush won't 
> affect the safety of your data.
> 
> It will change your performance characteristics, almost certainly for the 
> worse.
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