[OpenAFS] poor out of cache behavior on writing

[Derrick J Brashear]

On Mon, 17 Feb 2003, Dexter "Kim" Kimball wrote:

> It seems that cache garbage collection has some limitations when asked to
> fill/purge in a short cycle.
> 
> By the way, if you're going to routinely be reading/writing large files
> sequentially, you may want to experiment with AFS cache chunk size.
> 
> WRT AFS vs. NFS, I believe that in 1) a local area network with 2) a lot of
> write activity, the caching overhead of AFS is a liability.  (Write to local
> disk cache, read from local disk cache, network to fileserver, write to
> fileserver disk.)

I think there are cases where it makes sense to bypass the cache (e.g. be
NFS). I don't know how we might actually figure out how to do so without
user intervention.