Those primary data points will go through a consolidation function and this value will go to RRAs we have 3 times that matter: - step from database: Specifies the base interval in seconds with which data will be fed into the RRD. AVERAGE = Takes the average of a certain amount of data points obtained and use the average as a point on the graph. Is this even possible? But it makes sense to take only those rrd's, that belong to the same datasource (e.g. Unrecognized consolidation function = No RRD's Post general support questions here that do not specifically fall into the Linux or Windows categories. XFF Defines XFiles Factor, the number of data points that can be anally probed by martians before RRD gives a crap. Moderators: Developers , Moderators Even if no consolidation is required, you are going to "consolidate" one PDP into one CDP. 0.5 – The field following (“xff“) defines how many data points need to be available for the CF to create one CDP. Then the following DEF defines a variable for the average of that data source: DEF:inbytes=mrtg.rrd:in:AVERAGE The rrdtool graph command is designed to plot data at a specified temporal resolution, regardless of the actually resolution of the data in the RRD file. You first define "var_name_1" to be data collected from data source "ds_name" found in RRD "some.rrd" with consolidation function "CF". Active 3 years, 7 months ago. You can define any number of different consolidation … Assume the ifInOctets SNMP counter is saved in mrtg.rrd as the DS "in". Since updatev requires direct disk access, the --daemon option … The values are indexed by timestamp (time_t), RRA (consolidation function and PDPs per CDP), and data source (name). Note that depending on the arguments of the current and previous call to update, the list may have no entries or a large number of entries. Steps Defines how many Primary Data Points (PDPs) are consolidated using the Con-solidation Function (CF) to create the stored value. In this case “0.5” means, … Viewed 348 times 0. rrdtool - [workdir]| function Description ... (RRD), you can define at which interval this consolidation should occur, and what consolidation function (CF) (average, minimum, maximum, last) should be used to build the consolidated values (see rrdcreate). I want to use rrdtool as a ringbuffer which simply forgets the oldest value if a new value arrives and RRA is full. CF Consolidation Function. Cron Daemon throwing "rrdtool.error: unknown consolidation function" Thread starter TheBrawnyMan; Start date Jun 30, 2012; Status Not open for further replies. The four Consolidation Function options are AVERAGE, MIN, MAX, or LAST. Joined Jun 6, 2012 This can present a problem for the specialized consolidation functions which maintain a one-to-one mapping between primary data points and consolidated data points. Perform a fetch operation on the specified RRD Database given be filename, where cf is the consolidation function, ret_start is the start time given by unix epoch, ret_end is the endtime. Ask Question Asked 3 years, 7 months ago. The created CDPs are stored in a Round Robin Archive (RRA). Each time a series of 40 PDPs is known, RRDtool consolidates them and stores them as a Consolidated Data Point (CDP). T. TheBrawnyMan Neophyte. with the same rrd file structure). In the example above, the AVERAGE function is used is calculated an average. It are these CPDs that are stored in the database. Using RRDtool without consolidation function. four rra's for each of the consolidation functions Of course, you may also enter a partly qualified dataset name. Consolidation Function: This is what tells GPRINT what to output or what consolidation of the data source to use. 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