Mike,
AIX does indeed "cache" files into RAM but this is volatile.
AFS RAM cache is more persistent (since the AFS Cache Manager
decides when to ditch old data from the AFS cache).
So the effect is: AIX RAM "cache" <=> AFS RAM cache
which is definitely faster than: AIX RAM "cache" <=> AFS disk cache.
So, there is no "clash" or "complement". They are separate.
If you are going to try this, IMHO, you need a machine with plenty of RAM.
It worked for me with 256MB AFS RAM cache on 1GB RAM
IBM RISC System/6000 (now ancient) model 930.
It is very simple to do, just add "-memcache" [1]
to your /etc/rc.afs startup of the AFS Cache Manager "afsd".
--
cheers
paul http://acm.org/~mpb
References:
[1] afsd
http://www.transarc.com/Library/documentation/afs/3.6/unix/en_US/HTML/AdminRef/auarf058.htm#HDRAFSD
Mike W Ellwood wrote:
>
> As a matter of interest, when running AFS client on AIX, and
> if using memory cache for AFS, does the AFS memory cache
> compete with, or complement the way that AIX itself caches
> files in memory?
>
> Or to put the question another way, how does AFS memory caching
> and AIX file caching interact, if at all?
>
> Thanks,
> Mike Ellwood [EMAIL PROTECTED]
> speaking for himself, and not for:
> CCLRC Rutherford Appleton Laboratory
> Chilton, DIDCOT, Oxon
> GB OX11 0QX
> Tel: 01235-446161 Fax:01235-446626
