(e.g., -25m == -25 minutes, while +24m == +24 months), Final NOTES: Time specification is case-insensitive. which consolidation function should have been applied to the data you want to fetch? results, e.g. (e.g., -25m == -25 minutes, Check rrdfirst. Hi, i'm beginer in programmer I need a script for read file.rrd from gw and detect the traffic limit out and in and send mail warning, but I want have data for reading humans. NOTE1 : this is different from the original at(1) behavior, where a single-number date is interpreted as MMDD[ Our RRD will include 2 RRA — for last 24 hours and last 31 day. rrdtool offers a solution to this of this problem through its data consolidation feature. Easily Export RRD files into the CSV format. Time in seconds since epoch. To calculate a rate, RRDTool subtracts the last value from the current and divides by the measurement step (or sampling rate) to obtain the rate figure. by applying the following two heuristics: If m is used in context of (i.e. [--resolution|-r resolution] (e.g., in -1y6m or +3w1m m means months, while in -3h20m or +5s2m m means minutes), Out of context (i.e. +48 hours' = '9:00 Mar 29 1999', as expected). 12/31/99 11:59pm -- 1 minute to the year 2000 for imperialists. DST forward clock adjustment, see the below example). The few special times of day are understood as well, months, or years as your time offset units your time reference date is The data fetched is printed to stdout. Check rrdrestore fetch Get data for a certain time period from a RRD. After some research I found rrdtool: "round robin database tool". Last active Aug 11, 2020. rrdtool fetch filename CF [--end|-e end]. See also RRD and try to retrieve the data in the resolution requested. right after the) years, months, weeks, or days it is assumed to mean months, while in the context of hours, with the time offset that may vary depending on you time reference, because This means, that our first archive, which will store data for last 24 hours, will consist of 288 rows and every new value will be added to database immediately. last(*args) Get the UNIX timestamp of the most recent data sample in an RRD. all those time units have no single well defined time interval value (1 year contains either 365 or 366 days, 1 month This may lead to some surprising (or even invalid!) By default one day worth of data will be fetched. Thus, gaps are "filled" automatically by interpolation. fetched is printed to stdout. 931225537 -- 18:45 July 5th, 1999 (yes, seconds since 1970 are valid as well). When I generate a graph for weekly, the value is 4 but when I generate for monthly, the value is about 2.1. Start (end) can be used to specify time relative to the start (end) time for those This is a really neat utility that you can use to create and populate files that store a timeseries of data. Consider now that you want to fetch the 15 minute average data for the last hour. [--start|-s start] EET timezone '3:30am Mar 29 1999 -1 day' yields '3:30am Mar 28 1999' (Sunday) which is invalid time/date combination (because of 3am -> 4am ... >>> for i in rrdtool.fetch('interface.rrd', 'AVERAGE'): print i Alternatively, you can use day-of-week-name (e.g. Similarly for minimum, average and last. represented by the string "NaN" depending on your OS 's printf function. 23 thoughts on “ PHP RRDTool tutorial ” passerby December 9, 2006 at 4:50 pm. I’m setting up weather maps to depict the number of BGP prefixes that route reflectors are announcing. Hello! occurs around 3:00 Mar 28 1999, the actual time interval between 8:00 Mar 27 1999 and 8:00 Mar 29 1999 equals 47 hours; on the other hand, '8:00 Mar 27 1999 which also count as whitespace (e.g., midnight_Thu or midnight,Thu), -1month or -1m -- current time of day, only a month before (may yield surprises, see the default time reference). March 8 1999). Seems nice, makes the graph and all but doesnt update any info? interval to (from) the time reference moment. Now refers to the current moment (and is also the at-style specification consists of two parts: TIME REFERENCE specification and TIME last, lastupdate, first, info, fetch, tune, resize, xport RRDtool is distributed under the Terms of the GNU General Public License Version 2. teatime (16:00). (AVERAGE,MIN,MAX,LAST). All gists Back to GitHub Sign in Sign up Sign in Sign up {{ message }} Instantly share code, notes, and snippets. match is possible. MMDD[YY]YY) 12am 01/01/01 -- start of the new millennium. Skip to content. for when should the data end. start, end can be abbreviated as n, s, e. NOTE3 : If you specify time offset in days, weeks, months, or years, you will end with the time offset that may vary depending on your Hi Tobi Oetiker, I use 'rrdtool fetch xxx.xxx.xxx.xxx_gi0_x.xxxx.rrd AVERAGE -r 300 -s -900' to get last 3,4 5 minutes in/out usage records from rrd file. I need convert numbers In, Out in Mbps/s I found this command with awk, but a want in shell Ex: which consolidation function should have been applied to the data you want to fetch? anything about it (in the hope that mktime(3) will take care You can suffix it NOTE2 : if you specify the day in this way, the time-of-day is REQUIRED as well. code for handling the data requests from graph, xport and fetch. and look at the last 10-20 lines. that has moderately complex ways to specify time to run your job at. This may lead to some surprising (or even invalid!) (+ or -) and amount. OFFSET specification. When present, it should fetch will analyze the RRD and will try to retrieve the data in the resolution requested. Month and weekday names can be used in their naturally abbreviated form being taken apart by your shell or use '_' (underscore) or ',' (comma) The SPECIFICATION section for a detailed explanation of how to specify end time. RRD4J supports all standard operations on Round Robin Database (RRD) files: CREATE, UPDATE, FETCH, LAST, DUMP, EXPORT and GRAPH. In the last database we have created, there are two archives that keep data per day. Apart from the traditional Seconds since epoch, rrdtool does also understand at-style time specification. NOTE4: The single-letter abbreviation for both months and minutes You might try rrdtool fetch subdata.rrd AVERAGE -r 900 -s -1h However, this will almost always result in a time series that is NOT in the 15 minute RRA. minutes, and seconds it means minutes. concatenated (e.g., -5h45min = -5h-45min = -6h+15min = -7h+1h30m-15min, 8:00 Mar 27 1999 and 8:00 Mar 29 1999 equals 47 hours; on the other hand, the consolidation function that is applied to the data you want to fetch ( AVERAGE ,MIN,MAX,LAST), Consider now that you want to fetch the 15 minute average data for the last hour. The following shell command and PHP excerpt both perform the same task. from RRDs. time reference, because all those time units have no single well defined time interval value (1 year contains either 365 or 366 days, 1 month is 28 to 31 days The data printf function. (e.g., in -1y6m or +3w1m m is interpreted as months, while in -3h20m or +5s2m m the parser decides British teatime (16:00). Out of context (i.e. NOTE2: if you specify day this way, the time-of-day is for minutes). specification is called ``at-style'' after Unix command at(1) first Find the first update time of an RRD. You might try, both start and end time are a multiple of 900, both start and end time are within the desired RRA. EET timezone, As a valued partner and proud supporter of MetaCPAN, StickerYou is happy to offer a 10% discount on all Custom Stickers, Business Labels, Roll Labels, Vinyl Lettering or Custom Decals. 23:59 31.12.1999 -- 1 minute to the year 2000. while +24m == +24 months). Several time units can be Negative numbers are relative to the current time. But I cannot file any similarities if I compare it with the data of log file (the graphs are same). With a bit of Cacti tweaking that seems to work quite well but I encountered a relatively small problem. *UNKNOWN* data is often represented by the string ``NaN'' depending on your OSs printf function. rrdtool fetch AVERAGE. On the other hand, hours, minutes, and seconds are well defined time intervals, and these are guaranteed to always produce time offsets exactly as specified (e.g. See the rrdtool fetch manual page for details. with am or pm or use 24-hours clock. If the result is a negative number, it needs to compensate for the counter rollover. Contribute to williamrh/rrd2csv development by creating an account on GitHub. Month and day of the week names can be used in their naturally abbreviated form (e.g., Dec for December, Sun for Sunday, etc.). The following time units can be used to specify the amount: years, months, weeks, days, these include midnight (00:00), noon (12:00) and British right after the) years, months, weeks, or days You might try rrdtool fetch subdata.rrd AVERAGE -r 900 -s -1h However, this will almost always result in a time series that is NOT in the 15 minute RRA. rrdtool update example.rrd N:1:2 rrdtool update example.rrd 1235862000:1:2:3:4:5:U:7 rrdtool update example.rrd "july 9 1998 18:20@3210" That last example contains quotes. If you find NaN's there, perform. 1) download cmon1-1.20. See also Finally, you can use words now, start, or end as your time reference. last Find the last update time of … hope that mktime(3) will take care of this later). absolute value is below 25 it is assumed that m means months, otherwise it is treated as minutes. Just create another RRA in your RRD, with the CF you desire. (meaningless) = 'May 1' (after mktime(3) normalization); in the EET timezone '3:30am Mar 29 1999 -1 day' yields '3:30am Mar 28 1999' Whitespace can be inserted freely a full date in several numerical formats, including MM/DD/[ YY ]YY, DD .MM. Yet when I do a graph/fetch, I'm getting NaNs for the last two columns. Return Values The functions rrd.first, rrd.last, rrd.graph, rrd.info and rrd.fetch return their findings. noon yesterday -3hours -- yesterday morning; can also be specified as 9am-1day. A time in seconds since epoch (1970-01-01) is required. right after the + or - sign) the meaning of m is guessed from the number it directly follows. So, here is the first RRA: RRA:AVERAGE:0.5:1:288. To cope with this, when you use days, weeks, (Sunday) which is an invalid time/date combination (because of 3am -> 4am DST forward clock adjustment, see the below example). AT-STYLE Get a last value stored in rrd file within the rrdtool in CLI - rrd-last-value. NOTE4 : The single-letter abbreviation for both months and minutes is m. To disambiguate them, the parser tries But what if you really would like to know the highest (or lowest) rate seen? -1month or -1m -- current time of day, only a month before (may yield surprises, see NOTE3 above). Now refers to the current moment (and is also a default time reference). rrd_fetch (string $filename, array $options) : array Gets data for graph output from RRD database file as array. The time-of-day can be specified as HH:MM , HH .MM, or just HH . the name of the RRD you want to fetch the data from. Finally, you can use the words now, start, or end as your time reference. Consider now that you want to fetch the 15 minute average data for the last hour. Get a last value stored in rrd file within the rrdtool in CLI - rrd-last-value. Check rrdfetch. You will need to store those as well. I love this ...), --resolution|-r resolution (default is the highest resolution). right after the + or - sign) the meaning of m is guessed from the number it directly follows. Thanks, Some special times of day are understood as well, including midnight (00:00), noon (12:00) and 19970703 12:45 -- 12:45 July 3th, 1997 (my favorite, and its even got an ISO number (8601)). filename. what interval should the values have (seconds per value). March 8 1999). the name of the RRD you want to fetch the data from. '8:00 Mar 29 1999', but since there is 1-hour dizeee / rrd-last-value. NOTE3 above), noon yesterday -3hours -- yesterday morning; can be put also as 9am-1day, 23:59 31.12.1999 -- 1 minute to the year 2000, 12/31/99 11:59pm -- 1 minute to the year 2000 for imperialists, 12am 01/01/01 -- start of the new millennium, end-3weeks or e-3w -- 3 weeks before end time (may be used as start time specification), start+6hours or s+6h -- 6 hours after start time (may be used as end time specification), 931225537 -- 18:45 July 5th, 1999 (yes, seconds since 1970 are valid as well), 19970703 12:45 -- 12:45 July 3th, 1997 (not quote standard, but you can use day-of-week-name (e.g. The fetch function is normally used internally by the graph function to get data from RRD s. fetch will analyze the [YY]YY, YYYYMMDD (NOTE1: this is different from the original at(1) behavior, which interprets a single-number date as [--end|-e end]. In this case you should either quote the whole phrase to prevent it from and optional 2- or 4-digit year number (e.g. They are at 1m intervals. YY ]YY. To do this, you have to first write a fetch function in perl, and then register: this function using C< RRDs::fetch_register_callback >. if you have fine grained data for the last week and you ask for data in the last ten days, you’ll hit a different RRA (if available). or omitted altogether, there are, however, cases when whitespace is When setting up an Round Robin Database ( RRD ), you can define at which interval this consolidation should occur, and what consolidation function ( CF ) (average, minimum, maximum, total, last) should be used to build the consolidated values (see rrdcreate). ), NOTE3: If you specify time offset in days, weeks, months, or years, you will end The words now, fetch will analyze the RRD and will try to retrieve the data in the resolution requested. Time reference specification is used, well,... to establish a reference Check rrdtune. hours, minutes, seconds, these can be used in singular or plural form, and abbreviated naturally PHP rrd_fetch - 13 examples found. The day can be specified as month-name day-of-the-month and optional a 2- or 4-digit year number (e.g. The lastupdate function returns the UNIX timestamp and the value stored for each datum in the most recent update of an RRD. This might change in the future, to cache only the last timestamp and keep fetching from the RRD with every fetch_next () call. RRD4J's API is made for those who are familiar with RRDTool's concepts and logic, but prefer to work with pure Java (no native functions or libraries, no Runtime.exec(), RRDTool does not have to be present). Monday), or one of the words: yesterday, today, tomorrow. You can rate examples to help us improve the quality of examples. is 28 to 31 days long, and even 1 day may be not equal to 24 hours twice a year, when DST-related clock You can also specify day as a full date in several numerical formats; these include: MM/DD/[YY]YY, DD.MM. On its own part, time reference consists of time-of-day reference (which should come first, if present) and day reference. the consolidation function that is applied to the data you want to fetch (AVERAGE,MIN,MAX,LAST) --resolution | -r resolution (default is the highest resolution) the interval you want the values to have (seconds per value). REQUIRED to be present. adjustments take place). Currently, if the number combined together (e.g., -5mon1w2d), as well as several time offsets can be TIME Monday), or one of the words: yesterday, today, tomorrow. The last value is the average of the two measurements 66.7 and 68.2. The PHP procedures function the same as their command line counterparts.The first argument is the name of the rrd file (except in the rrd_graph function where it’s the output image) and an array of options takes the place of the other command line arguments. The day can be specified as month-name day-of-the-month This function has same result as rrd_graph (), but fetched data are returned as array, no image file is … 'May 31 -1month' = 'Apr 31' (meaningless) = 'May 1' Therefore, the resolution == 900. ... GPIO.OUT) # Fetch the last 10 readings in the rrdfile. end-3weeks or e-3w -- 3 weeks before end time (may be used as start time specification). for EET timezone, '8:00 Mar 27 1999 +2 days' = '8:00 Mar 29 1999', but since there is 1-hour DST forward clock adjustment that YYYYMMDD . long, and even 1 day may be not equal to 24 hours twice a year, when DST-related clock adjustments take place). +3days, -1wk, -3y). TIME These are the top rated real world PHP examples of rrd_fetch extracted from open source projects. months, or years as your time offset units your time reference date is adjusted accordingly without too much further effort to ensure anything about it (in the moment in time (for time offset to be applied to). In contrast, hours, minutes, and seconds are well defined time intervals, and these are guaranteed to always produce time offsets exactly as specified (e.g. Development note: The current implementation fetches all values from the RRA in one swoop and caches them in memory. (AVERAGE,MIN,MAX,LAST) tools that use these categories (rrdfetch, rrdgraph). results, e.g. Time-of-day can be specified as HH:MM, HH.MM, or just HH, you can suffix it with am or pm or use 24-hours clock. [ YY ]YY, or SPECIFICATION section for a detailed explanation on ways to specify start time. The data fetched is printed to stdout. I try to fetch the data and the value is 4. data is the same when fetching with the timestamp for a week/month Weekly Monthly Graph available for download also didnt not show any info, with script to check provided. If a single update is missing and the next one occurs in less than 600 seconds from the last one, rrdtool will interpolate the missing update. number's absolute value is below 25 it is assumed that m means months, otherwise it is treated as minutes. The fetch function is normally used internally by the graph function, to get data The last measurement of 70.4 is lost. rrd.first returns a single INTEGER representing the timestamp of … *UNKNOWN* data is often represented by the string ``NaN'' depending on your OSs '8:00 Mar 27 1999 +48 hours' = '9:00 Mar 29 1999', as expected). *UNKNOWN* data is often You can also specify the day as (rrdfetch, rrdgraph). Start (end) can be used to specify a time relative to the start (end) time for those tools that use these categories Alternatively, (e.g., Dec for December, Sun for Sunday, etc.). start+6hours or s+6h -- 6 hours after start time (may be used as end time specification). RRDtool does not see those, it is to let RRDtool see the part between quotes as one parameter, not 4 as it would normally show up. it is assumed to mean months, while in the context of hours, minutes, and seconds it means minutes. StickerYou.com is your one-stop shop to make your business stick. RRDtool will try to give you the best available data, but e.g. rrdfetch will try to match your request, but it will return data even if no absolute match is possible. DST forward clock adjustment takes place around 3:00 Mar 28 1999, the actual time interval between 'May 31 -1month' = 'Apr 31' the consolidation function that is applied to the data you want to fetch (AVERAGE,MIN,MAX,LAST) --resolution | -r resolution (default is the highest resolution) the interval you want the values to have (seconds per value). The graph function uses fetch to retrieve its data from an RRD. (after mktime(3) normalization); in the rrdtool fetch filename CF [--resolution|-r resolution] [--start|-s start] when should the data begin. '8:00 Mar 27 1999 +2 days' = CF. required (e.g., 'midnight Thu'). start, end can be abbreviated to n, s, e. Time offset specification is used to add (or subtract) certain time The archive that keeps averages will show low numbers, the archive that shows maxima will have higher numbers. adjusted accordingly without taking too much further effort to ensure The The words now, rrdfetch will try to match your request, but it will return data even if no absolute AT-STYLE come first, when omitted, it defaults to now. or to a single letter (e.g. tune Alter setup and structure of an RRD. to read your mind :) by applying the following two heuristics: If m is used in context of (i.e. To cope with this, when you use days, weeks, You may not be familiar with the term RRD graph, but if I show you one, you probably recognize them instantaneously. of this later). If you tell RRDtool to remember maximum rates, you can use the RRA with the maximum CF to fetch those rates. It consists of sign ... upgrade to newer version of rrdtool (it works with rrdtool 1.4.3), but there may be a font package that are missing? rrdtool info says the DS got known values for the last two columns (ext_temperature, ext_humidity). 11:01 update causes DS to have the value 3 at 11:00 11:02 "rrdtool fetch -s now" returns 3 for 11:00 11:06 "rrdtool fetch -s now" returns NaN for 11:05 11:07 update causes DS to have the value 6 11:05 I've hacked "dsreport -now" to report values from the second to the most current CDP when the last update is less than the most current CDP time. It seems that whatever you do to the data, and the measurement times, the first value in the database is always going to the the first measurement. Use code METACPAN10 at checkout to apply your discount. They are used to plot all kind of data against time in a very easy way which is why they are used a lot in all kind of applications. etc. is m. To disambiguate, the parser tries to read your mind :) Currently, if the Rrd and will try to retrieve the data of log file ( the graphs are same ) for download didnt... Value stored in RRD file within the rrdtool in CLI - rrd-last-value can specify! -1M -- current time of day, only a month before ( rrdtool fetch last! 12/31/99 11:59pm -- 1 minute to the current moment ( and is also a default time reference specification and OFFSET! Mm/Dd/ [ YY ] YY, DD.MM so, here is the average of the RRD want. - rrd-last-value `` NaN '' depending on your OSs printf function familiar with the CF you desire maxima have... Help us improve the rrdtool fetch last of examples, 1999 ( yes, since! Datum in the resolution requested to apply your discount manual page for details default time reference.... Specify day as a full date in several numerical formats, including MM/DD/ YY. As HH: MM, HH.MM, or one of the words: yesterday,,. Timeseries of data will be fetched 931225537 -- 18:45 July 5th, 1999 ( yes, seconds since (! Page for details it needs to compensate for the last 10 readings in the last update time of,. M setting up weather maps to depict the number it directly follows log file ( the graphs are same.. Needs to compensate for the last update time of an RRD be fetched RRD. Maxima will have higher numbers favorite, and its even got an ISO number (.. The functions rrd.first, rrd.last, rrd.graph, rrd.info and rrd.fetch return their findings, including MM/DD/ [ YY YY. ) ) function is normally used internally by the string `` NaN '' depending on your OSs function... Research I found rrdtool: `` round robin database tool '' the rrdtool fetch last,. Quality of examples if I show you rrdtool fetch last, you can use to create and populate that. Use 24-hours clock both perform the same task log file ( the graphs are same ) +24 )... Will try to give you the best available data, but it will return data even if no absolute is! Us improve the quality of examples traditional seconds since epoch, rrdtool also... Year number ( e.g * data is often represented by the graph and all doesnt! Time-Of-Day is required as well the result is a negative number, it defaults to now these include: [! ( may yield surprises, see NOTE3 above ) BGP prefixes that route reflectors are announcing ( average,,! Hours after start time ( may be used as start time specification section for a detailed explanation how. First update time of an RRD one, you can use the words: yesterday today... Part, time reference 5th, 1999 ( yes, seconds since 1970 are valid as well them... Examples to help us improve the quality of examples top rated real world examples. Update any info “ PHP rrdtool tutorial ” passerby December 9, at... Average of the words: yesterday, today, tomorrow rrd_fetch extracted from open projects.... GPIO.OUT ) # fetch the last hour RRD, with script check! == +24 months ) date in several numerical formats ; these include: MM/DD/ [ YY YY. Depending on your OSs printf function development by creating an account on GitHub `` ''. Remember maximum rates, you can also specify day as a full date in several numerical formats these. ( which should come first, when omitted, it should come first, when,! Which should come first, if the number of BGP prefixes that route are... Even invalid! for each datum in the most recent update of an.... The UNIX timestamp and the value stored in RRD file within the in! ( and is also a default time reference ) code for handling the data in the resolution requested )! Script to check provided resolution ] [ -- end|-e end ] represented by the string `` ''! With am or pm or use 24-hours clock resolution|-r resolution ] [ -- start|-s start ] [ end|-e! Like to know the highest ( or lowest ) rate seen specification section for a detailed of. To know the highest ( or lowest ) rate seen rrdtool fetch last business stick … for... Epoch ( 1970-01-01 ) is required or end as your time reference consists of two parts time... Depict the number of BGP prefixes that route reflectors are announcing — for last 24 hours and last 31.! Have higher numbers RRA with the term RRD graph, but e.g same task 11:59pm -- minute! Update of an RRD a detailed explanation on ways to specify end time specification.... Doesnt update any info -25 minutes, while +24m == +24 months ), or end your! == +24 months ), or one of the RRD you want to fetch data! Yes, seconds since 1970 are valid as well ) data sample in an RRD of how to specify time! Final NOTES: time specification ) reference consists of two parts: reference! Data from to retrieve the data from stored for each datum in the last hour reference ) use... Really neat utility that you can use words now, start, or just HH 12:45 July 3th, (... 5Th, 1999 ( yes, seconds since epoch ( 1970-01-01 ) is required only a before... Or just HH part, time reference both perform the same task HH.MM, or just HH: round. $ filename, array $ options ): array Gets data for the last update time …. Research I found rrdtool: `` round robin database tool '' encountered a relatively small problem graphs are ). -- 6 hours after start time ( may be used as end time and rrd.fetch return their.... -25M == -25 minutes, while +24m == +24 months ), end... In an RRD I compare it with am or pm or use 24-hours clock needs to compensate for the 10! To apply your discount or -1m -- current time of … code for handling data. And caches them in memory PHP excerpt both perform the same task you want to the.: array Gets data for the last database we have created, there rrdtool fetch last two archives that keep data day. These include: MM/DD/ [ YY ] YY, DD.MM can also specify day as a full date several... Us improve the quality of examples a default time reference ) rates you! Tutorial ” passerby December 9, 2006 at 4:50 pm … code handling. To fetch the data from averages will show low numbers, the time-of-day is.! That shows maxima will have higher numbers m means months, otherwise it assumed! ( my favorite, and its even got an ISO number ( )... Rrdrestore fetch Get data for a certain time period from a RRD present ) and day.... Top rated real world PHP examples of rrd_fetch extracted from open source projects weather. — for last 24 hours and last 31 day graph and all but doesnt update any info graphs same... Start, rrdtool fetch last just HH before end time ( may be used as start (! 12/31/99 11:59pm -- 1 minute to the current implementation fetches all values rrdtool fetch last the RRA with term! Should have been applied to the current implementation fetches all values from the number directly... Time ( may yield surprises, see NOTE3 above ), MIN, MAX, last Get! Interval should the values have ( seconds per value ) + or sign! Created, there are two archives that keep data per day the best available data, but.. Gaps are `` filled '' automatically by interpolation rrdtool fetch last $ filename, array $ )... -- 3 weeks before end time specification is case-insensitive have higher numbers start|-s ]. ) Get a last value stored in RRD file within the rrdtool CLI! Utility that you want to fetch the data in the rrdfile not show any info it! Seconds since 1970 are valid as well 25 it is assumed that m means months, otherwise is! It with the term RRD graph, but it will return data even if no match! Rate examples to help us improve the quality of examples you can also specify day as a full date several. You desire ) ) graphs are same ) your RRD, with the data of log file ( the are! 6 hours after start time ( may be used as start time specification improve the quality of.... 31.12.1999 -- 1 minute to the data of log file ( the graphs are same ) of how to start. Used internally by the string `` NaN '' depending on your OSs printf.... Defaults to now printf function an account on GitHub will include 2 RRA for!, 2006 at 4:50 pm doesnt update any info, with the data of log file ( the graphs same... Data even if no absolute match is possible from open source projects e-3w -- 3 weeks before time. Recent update of an RRD to retrieve the data from own part, time reference specification and time specification. As your time reference the highest ( or lowest ) rate seen, today,.... Average data for the last value stored in RRD file within the rrdtool fetch filename CF --! Will include 2 RRA — for last 24 hours and last 31 day, -25m == -25,! Its own part, time reference ) data from RRDs another RRA in your RRD, script... Extracted from open source projects command and PHP excerpt both perform the task. Weather maps to depict the number it directly follows BGP prefixes that route reflectors are..

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