The files are being not being read after they are written.. its a bulk
write operation.

Thanks or that tip on dcache.. I somehow didn't catch it was for a memory
cache only...

On Mon, Jan 28, 2013 at 2:05 PM, Andrew Deason <[email protected]>wrote:

> On Mon, 28 Jan 2013 12:58:17 -0800
> Timothy Balcer <[email protected]> wrote:
>
> > I am looking at afsmonitor on the client involved, and I am seeing a
> > large number of vcache misses in afsmonitor (519000 misses vs 6251
> > hits, at the moment).
>
> Based on the rest of your email, I assume you know which files/accesses
> are generating those hits and misses.
>
> Do you know how frequently you are accessing these files? How many
> clients would be reading/stat'ing them at around the same time? Do these
> files ever change?
>
> > The product of dcache and chunksize is equal to less than 95% of the
> > cache partition size, which is 5 Gigabytes. I am not dealing with
> > loads of volumes at once in these operations... two to four at a time.
>
> -dcache just sets the number of in-memory dcache entries, not the number
> of chunks for the whole cache. The afsd manpage makes a few references
> to multiplying the dcache and chunksize together, but that's for a
> memory cache. I don't think you want to set -dcache; I would just
> configure the cache size and the chunksize if you want.
>
> --
> Andrew Deason
> [email protected]
>
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>



-- 
Timothy Balcer / IT Services
Telmate / San Francisco, CA
Direct / (415) 300-4313
Customer Service / (800) 205-5510

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