X-Git-Url: https://git.octo.it/?p=rrdtool.git;a=blobdiff_plain;f=doc%2Frrdcreate.pod;h=abb42fc977a6fab48dc34ec240e723bb7b16e5d0;hp=03012e035e2739ce6eae79584fcc191844d44acb;hb=35354e059a77479a7a135c1e4fc71c76523fd7c4;hpb=ccb77eaa2f0935a27bb2aabc4e19d15b6ff8605e diff --git a/doc/rrdcreate.pod b/doc/rrdcreate.pod index 03012e0..abb42fc 100644 --- a/doc/rrdcreate.pod +++ b/doc/rrdcreate.pod @@ -16,15 +16,13 @@ The create function of RRDtool lets you set up new Round Robin Database (B) files. The file is created at its final, full size and filled with I<*UNKNOWN*> data. -=over 8 - -=item I +=head2 I The name of the B you want to create. B files should end with the extension F<.rrd>. However, B will accept any filename. -=item B<--start>|B<-b> I (default: now - 10s) +=head2 B<--start>|B<-b> I (default: now - 10s) Specifies the time in seconds since 1970-01-01 UTC when the first value should be added to the B. B will not accept @@ -33,12 +31,12 @@ any data timed before or at the time specified. See also AT-STYLE TIME SPECIFICATION section in the I documentation for other ways to specify time. -=item B<--step>|B<-s> I (default: 300 seconds) +=head2 B<--step>|B<-s> I (default: 300 seconds) Specifies the base interval in seconds with which data will be fed into the B. -=item BIB<:>IB<:>I +=head2 BIB<:>IB<:>I A single B can accept input from several data sources (B), for example incoming and outgoing traffic on a specific communication @@ -63,7 +61,7 @@ In order to decide which data source type to use, review the definitions that follow. Also consult the section on "HOW TO MEASURE" for further insight. -=over 4 +=over =item B @@ -89,9 +87,7 @@ room. Internally, derive works exactly like COUNTER but without overflow checks. So if your counter does not reset at 32 or 64 bit you might want to use DERIVE and combine it with a MIN value of 0. -=over - -=item NOTE on COUNTER vs DERIVE +B by Don Baarda Edon.baarda@baesystems.comE @@ -110,8 +106,6 @@ probably preferable. If you are using a 64bit counter, just about any max setting will eliminate the possibility of mistaking a reset for a counter wrap. -=back - =item B is for counters which get reset upon reading. This is used for fast counters @@ -159,8 +153,7 @@ names of data source listed previously in the create command. This is similar to the restriction that Bs must refer only to Bs and Bs previously defined in the same graph command. -=item BIB<:>I - +=head2 BIB<:>I The purpose of an B is to store data in the round robin archives (B). An archive consists of a number of data values or statistics for @@ -218,8 +211,6 @@ a I which then goes into the archive. I defines how many generations of data values are kept in an B. Obviously, this has to be greater than zero. -=back - =head1 Aberrant Behavior Detection with Holt-Winters Forecasting In addition to the aggregate functions, there are a set of specialized