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