Re: firefly and cache tiers

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On Thu, 20 Nov 2014 03:12:44 PM Mark Nelson wrote:
> Personally I'd suggest a lot of testing first.  Not sure if there are 
> any lingering stability issues, but as far as performance goes in 
> firefly you'll only likely see speed ups with very skewed hot/cold 
> distributions and potentially slow downs in the general case unless you 
> have an extremely fast network and cache tier.
> 
> In giant and master, there are a lot of improvements being made to 
> decrease unnecessary cache promotions and blocking.


Thanks, good to know. Going to have to add some old disks for testing ;)

I didn't see any mention of ignoring large streaming reads/write - i.e backups 
and disk migrations. I imagine doing that would flush the cache of useful 
data?

Planned for giant?
-- 
Lindsay

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