The cachefsstat command displays statistical information about the cache file system mounted on path. The statistical information includes cache hits and misses, consistency checking, and modification operations. If path is not specified, all mounted cache file systems are used.

cachefsstat can also be used to reinitialize this information (see -z option).

The statistical information has the following format:

<cache hit rate> <consistency checks> <modifies>

where:

hit rate

The percentage of cache hits over the total number of attempts, followed by the actual numbers of hits and misses.

consistency checks

The number of consistency checks performed, followed by the number that passed, and the number that failed.

modifies

The number of modify operations, including writes, creates, etc.

The following option is supported:

-z

Zero (reinitialize) statistics. Execute cachefsstat -z before executing cachefsstat again to gather statistics on the cache performance. This option can only be use by the superuser. The statistics printed reflect those just before the statistics are reinitialized.

See largefile(5) for the description of the behavior of cachefsstat when encountering files greater than or equal to 2 Gbyte (2³¹ bytes).

The following exit values are returned:

0

Successful completion.

non-zero

An error occurred.

See attributes(5) for descriptions of the following attributes:

cachefslog(1M), cachefswssize(1M), cfsadmin(1M), attributes(5), largefile(5)