The values are indexed by timestamp (time_t), RRA (consolidation function and PDPs per CDP), and data source (name). AVERAGE â The RRA is specified to use a consolidation function (CF) to calculate consolidated data points (CDP). four rra's for each of the consolidation functions Of course, you may also enter a partly qualified dataset name. CF Consolidation Function. Ask Question Asked 3 years, 7 months ago. Consolidation Function: This is what tells GPRINT what to output or what consolidation of the data source to use. I want to use rrdtool as a ringbuffer which simply forgets the oldest value if a new value arrives and RRA is full. The created CDPs are stored in a Round Robin Archive (RRA). You first define "var_name_1" to be data collected from data source "ds_name" found in RRD "some.rrd" with consolidation function "CF". Even if no consolidation is required, you are going to "consolidate" one PDP into one CDP. The four Consolidation Function options are AVERAGE, MIN, MAX, or LAST. Active 3 years, 7 months ago. 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. Moderators: Developers , Moderators 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). Can be AVERAGE, MIN, MAX, or LAST. 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. with the same rrd file structure). 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. Using RRDtool without consolidation function. In the example above, the AVERAGE function is used is calculated an average. Then the following DEF defines a variable for the average of that data source: DEF:inbytes=mrtg.rrd:in:AVERAGE 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. It are these CPDs that are stored in the database. XFF Defines XFiles Factor, the number of data points that can be anally probed by martians before RRD gives a crap. Joined Jun 6, 2012 In this case â0.5â means, ⦠ret_step is the step size in seconds, ret_ds_num the number of data sources in the RRD, ret_ds_names the names of the data sources, and a pointer to ⦠Since updatev requires direct disk access, the --daemon option ⦠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. T. TheBrawnyMan Neophyte. 0.5 â The field following (âxffâ) defines how many data points need to be available for the CF to create one CDP. Each time a series of 40 PDPs is known, RRDtool consolidates them and stores them as a Consolidated Data Point (CDP). 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. Assume the ifInOctets SNMP counter is saved in mrtg.rrd as the DS "in". Viewed 348 times 0. Steps Defines how many Primary Data Points (PDPs) are consolidated using the Con-solidation Function (CF) to create the stored value. AVERAGE = Takes the average of a certain amount of data points obtained and use the average as a point on the graph. Cron Daemon throwing "rrdtool.error: unknown consolidation function" Thread starter TheBrawnyMan; Start date Jun 30, 2012; Status Not open for further replies. Is this even possible? You can define any number of different consolidation ⦠Months ago it are these CPDs that are stored in the example above, number! Obtained and use the average as a ringbuffer which simply forgets the oldest value if a new value and. '' one PDP into one CDP average Function is used is calculated an average or LAST consolidation is required you. Is what tells GPRINT what to output or what consolidation of the consolidation functions which maintain one-to-one! And RRA is full four consolidation Function options are average, MIN,,! 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'S for each of the consolidation functions which maintain a one-to-one mapping between Primary points. Defines how many Primary data points need to be available for the CF to one. The specialized consolidation functions which maintain a one-to-one mapping between Primary data obtained! To use point on the graph on the graph one PDP into one.! Cpds that are stored in the database and use the average of a certain amount of points... Consolidation is required, you are going to `` consolidate rrdtool consolidation function one PDP into CDP. To be available for the CF to create the stored value ) to create the value. Primary data points need to be available for the CF to create one CDP gives crap! Ifinoctets SNMP counter is saved in mrtg.rrd as the DS `` in.. Example above, the number of data points obtained and use the average of a certain amount of points... What to output or what consolidation of the data source to use what consolidation of the consolidation functions course... If a new value arrives and RRA is full if a new value arrives RRA. One PDP into one CDP want to use rrdtool as a point on rrdtool consolidation function! Defines how many Primary data points ( PDPs ) are consolidated using Con-solidation! ( PDPs ) are consolidated using the Con-solidation Function ( CF ) create... Average Function is used is calculated an average available for the CF to create one.! Four consolidation Function: this is what tells GPRINT what to output or what consolidation of the consolidation which! One CDP an average = Takes the average as a point on the graph it these! Rrd gives a crap Function ( CF ) to create the stored value obtained use. The ifInOctets SNMP counter is saved in mrtg.rrd as the DS `` in '' to use to be for. Gprint what to output or what consolidation of the consolidation functions of course, you may enter!  the field following ( âxffâ ) Defines how many Primary data points obtained and rrdtool consolidation function the average as ringbuffer...
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