The dfree cache time
should only be used on systems where a problem occurs with the
internal disk space calculations. This has been known to happen
with Ultrix, but may occur with other operating systems. The
symptom that was seen was an error of "Abort Retry
Ignore" at the end of each directory listing.
This is a new parameter introduced in Samba version 3.0.21.
It specifies in seconds the time that smbd will cache the output
of a disk free query. If set to zero (the default) no caching is
done. This allows a heavily loaded server to prevent rapid spawning
of scripts increasing the load.
By default this parameter is zero, meaning no caching
will be done.
dfree cache time = 60