Frank's result based on testing of fsal vfs can't be generalized to 
configurations which actually have latency, so, no?

Matt

----- Original Message -----
> From: "William Allen Simpson" <william.allen.simp...@gmail.com>
> To: "Frank Filz" <ffilz...@mindspring.com>, 
> nfs-ganesha-devel@lists.sourceforge.net
> Sent: Wednesday, January 11, 2017 5:19:46 AM
> Subject: Re: [Nfs-ganesha-devel] Readdir results
> 
> On 1/10/17 4:29 PM, Frank Filz wrote:
> > It looks like dirent caching does buy us something, though interestingly
> > the
> > initial populating tends to be the quickest run...
> >
> If the initial populating is the quickest run, there must be some
> interaction between the cache and the re-fetch that's causing thrashing.
> 
> I make no pretense of understanding this code.  But my gut feeling at this
> point is to toss this caching entirely.  Faster stores and faster networks
> mean fetching the entries should be fairly low latency.  Need to optimize
> moving the data through the system, with less examining it.
> 
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Matt Benjamin
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