(PECL rrd >= 0.9.0)
rrd_tune — Tunes some RRD database file header options
Change some options in the RRD dabase header file. E.g. renames the source for the data etc.
filename
RRD database file name.
options
Options with RRD database file properties which will be changed. See rrd tune man page for details.
Returns true
on success or false
on failure.