[OpenAFS] Very large caches

[Mitch Collinsworth]

On Tue, 27 Nov 2001, chas williams wrote:

> In message <3C038F31.8030807@est.ibm.com>,Paul Blackburn writes:
> >I am curious: have you tried using RAM cache?
> >In my experience with Transarc AFS on AIX, RAM cache is very fast.
> 
> my general opinion about ram cache is negative.  since ram is usually
> a fairly limited resource, people make their ram caches quite small
> which leads to poor performance. 

Historically ram has been a fairly limited resource.  Nowadays ram
is dirt cheap so there's little excuse not to load it up.

My question is:  Is anyone using ram cache with OpenAFS?  (Or has
anyone tried yet?)  I think I recall reading here a while back that
no one knew if it even worked with OpenAFS yet.

At last year's AFS workshop at LISA the consensus of folks in the
room seemed to be that a smallish ram cache was the fastest
performance to be gotten under IBM AFS.  This was so shortly after
the OpenAFS code had been released by IBM that there was little or
no experience yet to be discussed about OpenAFS.

-Mitch