X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=doc%2Frrdtune.pod;h=7b79037ddcd9f99c8aaf638572f7137f7cf22943;hb=d5e2b468080a3f7ecf054e112385cc5f7f248bfc;hp=1a002ce4a907afa3e0c56957e2d4683e8ebb8879;hpb=1ed31d581dfed23377a61d4df88bb9c2b9b2c94b;p=rrdtool.git diff --git a/doc/rrdtune.pod b/doc/rrdtune.pod index 1a002ce..7b79037 100644 --- a/doc/rrdtune.pod +++ b/doc/rrdtune.pod @@ -45,7 +45,7 @@ The name of the B you want to tune. =item S|B<-h> I:I> modify the I of a data source. By setting this to a high -value the RRD will accept things like one value per day ... +value the RRD will accept things like one value per day. =item S|B<-i> I:I> @@ -63,16 +63,17 @@ alter the type B of a data source. =item S|B<-r> I:I> -rename a data source +rename a data source. =item S I> -Alter the deviation scaling factor for the upper bound of the confidence band -used internally to calculate violations for the FAILURES B. The default -value is 2. Note that this parameter is not related to graphing confidence -bounds, that scale factor must be specified as a CDEF argument to generate -a graph with confidence bounds. The graph scale factor need not agree with the -value used internally by the FAILURES B. +Alter the deviation scaling factor for the upper bound of the +confidence band used internally to calculate violations for the +FAILURES B. The default value is 2. Note that this parameter is +not related to graphing confidence bounds which must be specified as a +CDEF argument to generate a graph with confidence bounds. The graph +scale factor need not to agree with the value used internally by the +FAILURES B. =item S I> @@ -91,35 +92,35 @@ simultaneously. Setting this option will reset the count of violations to 0. =item S I> -Alter the number of time points in the temporal window for determining failures. -This must be an integer greater than or equal to the window length of the -FAILURES B and less than or equal to 28. Setting this option will reset the -count of violations to 0. +Alter the number of time points in the temporal window for determining +failures. This must be an integer greater than or equal to the window +length of the FAILURES B and less than or equal to 28. Setting +this option will reset the count of violations to 0. =item S I> -Alter the intercept adaptation parameter for the Holt-Winters forecasting algorithm. -Must be between 0 and 1. +Alter the intercept adaptation parameter for the Holt-Winters +forecasting algorithm. This parameter must be between 0 and 1. =item S I> -Alter the slope adaptation parameter for the Holt-Winters forecasting algorithm. -Must be between 0 and 1. +Alter the slope adaptation parameter for the Holt-Winters forecasting +algorithm. This parameter must be between 0 and 1. =item S I> Alter the seasonal coefficient adaptation parameter for the SEASONAL -B. Must be between 0 and 1. +B. This parameter must be between 0 and 1. =item S I> Alter the seasonal deviation adaptation parameter for the DEVSEASONAL -B. Must be between 0 and 1. +B. This parameter must be between 0 and 1. =item S I> This option causes the aberrant behavior detection algorithm to reset -for the specified data source; that is, forget all it is has learn. +for the specified data source; that is, forget all it is has learnt so far. Specifically, for the HWPREDICT B, it sets the intercept and slope coefficients to unknown. For the SEASONAL B, it sets all seasonal coefficients to unknown. For the DEVSEASONAL B, it sets all seasonal @@ -150,7 +151,7 @@ time series changes in a drastic and permanent manner. C Set the minimum required heartbeat for data sources 'in', 'out' -and 'through' to 10000 seconds which is a little over one day in data.rrd. +and 'through' to 10'000 seconds which is a little over one day in data.rrd. This would allow to feed old data from MRTG-2.0 right into RRDtool without generating *UNKNOWN* entries. @@ -158,9 +159,10 @@ RRDtool without generating *UNKNOWN* entries. C -If the FAILURES B is implicitly created, the default window-length is 9 and -the default failure-threshold is 7. This command now defines a failure as 3 or more -violations in a temporal window of 5 time points. +If the FAILURES B is implicitly created, the default +window-length is 9 and the default failure-threshold is 7. This +command now defines a failure as 3 or more violations in a temporal +window of 5 time points. =head1 AUTHOR