NAME

       cacheadm - administer and configure AtFS derived object cache

SYNOPSIS

       cacheadm [-Amax_cached_per_cacheattr] [-Nmax_cached_per_name] [-Tmax_total_cached] [-q] [-v] directories

DESCRIPTION

       cacheadm  provides  control over the size of a derived object cache. You may set the maximum total number
       (T) of derived files to be stored, the maximum number of derived files  per  name  (N)  and  the  maximum
       number  of  derived  files  with  the  same  name  and the same caching attribute (A). Called without any
       options, cacheadm returns the actual sizes of the derived object caches in the named dirctories. An empty
       list of directories causes cacheadm to operate on the current directory.

       The relationship of the three cache size  values  must  always  be  T >= N >= A.  The  caching  attribute
       mechanism  is  described  on the af_cache(3) manual page.  When calculating your caching sizes you should
       keep in mind that you may set the total size (T) to any value but your cache will never grow bigger  than
       N*number_of_names.   Number_of_names  is the number of source object histories in your directories, where
       derived objects may be compiled from. If you set T to an astronomic value, the cache adapt it's  size  to
       the number of source histories automatically.

       In  the  current  implementation, the caching sizes can only be increased. Reduction of the maximum cache
       size is only possible when the cache is empty. Hence you have to  clean  your  cache  (atfsrepair -C (1))
       first if you want to shrink its size.

OPTIONS

       -A max_cached_per_cacheattr
               Set  the  maximum number of derived files with the same name and the same caching attribute to be
               stored. Default is 1.

       -N max_cached_per_name
               Set the maximum number of derived files with the same name to be stored. Default is 3.

       -T max_total_cached
               Set the total maximum number of derived files to be stored in the derived object  cache.  Default
               is  64.   -q  Quiet operation. Suppresses any output to stdout. This option does not affect error
               messages (stderr).

       -v      Output version identification string.

SEE ALSO

       chgrp(1), chmod(1), atfsrepair(1), af_cache(3)

AUTHOR

       Andreas.Lampen@cs.tu-berlin.de

AtFS-1.71                                   Thu Jan 13 15:30:55 1994                                 cacheadm(1)