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Questions tagged [rrdtool]

RRDtool (acronym for round-robin database tool) aims to handle time-series data like network bandwidth, temperatures, CPU load etc.

RRDtool (acronym for round-robin database tool) aims to handle time-series data like network bandwidth, temperatures, CPU load etc. This time series data is then automatically compressed based on the RRA (acronym for round-robin archive) defined at the time of creation. This allows the data to be retrieved at a high rate, but the storage footprint remains the same over time. The downside to this is granularity is lost over time. See the RRDtool documentation for more details.

http://oss.oetiker.ch/rrdtool/doc/index.en.html

http://en.wikipedia.org/wiki/RRDtool

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How do I get rrdtool from homebrew to work with ruby on macOS

In our Rails application we do require 'RRD' at some point, but that results in a cannot load such file -- RRD. So obviously I used homebrew to install rrdtool, but the error remains. The docs at https://oss.oetiker.ch/rrdtool/prog/rrdruby.en.html…
joost
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rrd_fetch does not contain values from last update. why?

I am storing information from temperature sensors in a rrd. I want to retrieve the values from a given timespan in php. For data from the last 2 hours, I use this: rrd_fetch($file, array("AVERAGE", "-s -2h")); This is working. However, the last…
Max J.
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RRDTOOL - left-axis-format - 3-4 digit numbers not working

My left axis is not formatting the numbers the way I want. I have the range set as: -l 400 -u 1400 -r I want the numbers/labels on the left (Y) axis to look like 400, 500, ... 1000, 1100 Not 0.4 k, 0.5 k, .... 1.0 k, 1.1 k If I put this format…
ehud42
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Accumulate multiple updates to rrd

My use case is that there are updates coming from multiple sources and i've to store sum of all updates. One way is that i create separate rrd files for each source and run a cron that stores sum to the aggregate rrd file. I was wondering if there…
Vikas
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Unable to install rrdtool-1.7.2 over MIPS due to unmet dependencies

I am trying to install rrdtool-1.7.2 on a debian over a MIPS based setup and keep getting error for missing libraries, some of which are actually already installed in the system. e.g. # ldd --version **ldd (Debian EGLIBC 2.11.3-4) 2.11.3** Copyright…
Behrouz A
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How to aggregate data by period in a rrdtool graph

I have a rrd file with average ping times to a server (GAUGE) every minute and when the server is offline (which is very frequent for reasons that doesn't matter now) it stores a NaN/unknown. I'd like to create a graph with the percentage the server…
Vinicius
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rrdtool graph ignoring --step?

I have RRD Files with multiple months of PDP Data (5min Interval). For general purpose Graphs its fine, when rrdtool automatically decides which RRA to use for displaying the Graph. But some of my Graphs contain 95-Percentile Data in the legend,…
powo
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Check_Mk RRD File Average Value Mismatch

I am trying to pull the data from the Check Mk server RRD File for CPU and Memory. From that, am trying to find the MAX and Average value for the particular Host for 1 month period. For the maximum value, I have fetched the file from the Check_mk…
hari
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RRD Tool Graph data is different between weekly and monthly

When I generate a graph for weekly, the value is 4 but when I generate for monthly, the value is about 2.1 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_Graph Monthly_Graph My…
Lâm Huynh Van
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Reporting solution for a 100,000 user base website, rrd?

Customer's website is a 100,000 user base website with million records of transaction data, currently the site uses RRDTool to generate several reports for every user in scheduled jobs, the concerns are: Not every user will need to view this…
johnw
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rrdcgi double graph problem: Unable to connect to rrdcached: Permission denied

I try to draw two graphs, but the second one fails to draw with the message "Unable to connect to rrdcached: Permission denied". The output looks like this: +--------------------+ | the first graph | +--------------------+ [ERROR Unable to…
Sergey
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How do tell rrdtool what time zone to use for the x-axis in a graph?

When the daily tick marks on my graph didn’t line up with crisp changes in my data at 00:00, I realized I had a time zone issue. Rrdtool is using my local time zone (UTC+6 for instance) to choose the tick marks, while my data was converted to ticks…
Erik Olson
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Can not display values adequately on the y-axis using rrdtool graph

I use rrdtool as a database for weather data. Everything works fine. Only the output of the air average air pressure (measured in hPa) causes problems with the output as a graph. The air pressure usually ranges between minimally 960 hPa and…
user200179
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RRDTool: strange "splashes" in the database and on the graph

Recently I came across a strange behavior of rrdtool: if data was inserted into the database at a random time, "splashes" appear on the graph, this can be seen in the attached picture. I also noticed that the incoming data does not match the data in…
Илья
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RRDs::fetch implementation using RRDtool

I have some legacy code which uses the RRDs module (RRDs::fetch), but now the RRD file generation is changed. A 64-bit program is generating an RRD file which can't be read by 32-bit Perl. So I am planning to use the 64-bit RRDtool to imitate the…
kumar
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