17300 sets the rate for the 300s leading up to that time. So the
rate is 1 from 1306317000 to 1306317300, and **NOT** from 1306317300
to 1306317600.
Obviously, you can fiddle with the data to your heart's content until
you understand what's going on and have the right outputs.
--
I'm not sure how it is
treated when the only consolidation you have is AVERAGE. I suspect it
may be consolidating the "in" CDEF to a single figure using AVERAGE
(which is the CF used in calculation "in") and then applying LAST. It
cannot show you the LAST value of th
moose wrote:
> > The problem moose has is that he is plotting the data counter, not a
>> rate derived from it.
>>
>>
>I did not understand you, Could you tell me what to do?
Create the RRD file with type COUNTER - then RRD will calculate the
rate correctly.
-
Bohdan Linda wrote:
>2) why are you using absolute values? If you update from counters, you
>should use GAUGE?
Err, make that COUNTER.
The problem moose has is that he is plotting the data counter, not a
rate derived from it. The graph is consistent with that.
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Visi
nd then
sequentially submit updates for different rrds - if processing is
heavy, then this would naturally delay submitting some of them, at
the risk of overrunning into the next step period. In most systems
however, it would be "more tricky" to do this - and it's one of the
things
concerned about, can you delay feeding in some update
values a bit ? As long as you use an explicit timestamp in the update
statement, then it doesn't matter what actual clock time the update
is submitted to rrd - as long as you maintain the right sequence of
upd
es rrds, but then it doesn't
>create rrds for those others anyway... and perhaps I won't as well.
It doesn't have to be all or nothing - you could create 2 rrd files -
one for the high res stuff, and one for the rest.
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;bucket' is completed, the
accumulator for each RRA is updated with the value in the bucket. As
each consolidated time period is completed, then a new consolidated
data point is generated.
You can easily see that the consolidations aren't always cascadable
since you could (for example) you
g for the next. RRD will never store data more detailed
than your step size - so even if you collected every second, you'd
still only get one value per step.
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Rick Jones wrote:
>BTW, how long as "N" been supported and how long have milliseconds been
>supported.
Don't know about sub-second times, but N has always been supported
while I've been using RRDtool (which is several years).
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een collection and update (perhaps some complex
conversions). If the script takes very little time to run, the two
options are near enough the same in effect.
When I wrote the above I wasn't aware you could use decimals in an update time.
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mean that your update "happens" when you submit the call rather than
when you take the timestamp, but for your setup I doubt that's a huge
issue.
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u are using.
1.2.27 is over 3 years old now, you have to choose - either upgrade
to get the new features you want, or accept that you can't use those
features that aren't present until later versions.
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7;ll need to do some calculations (to get the right time value) in
your script that calculates the parameters for the graph, but a VRULE
should do it.
http://oss.oetiker.ch/rrdtool/doc/rrdgraph_graph.en.html
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ent one. Given the slight variation in run times, many of your
updates will be more than the heartbeat apart and so you'll have many
gaps in the data.
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last update was a second before the end of a step for one, and just
after for the other, then last(something) would refer to different
time periods until the old one got updated and the period could be
completed.
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graph a stack of A and
B, plus a line for max(sum), and lines for max(imbalance) and
average(imbalance) which I suspect is what you are looking for.
Obviously calculating imbalance gets harder as you add more data sources.
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olidate that with a MAX function, MAX(SUM) comes to 10
which is what you may be looking for.
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rather than GPRINT, and don't include any graph drawing
commends. Do this once for each month and you could extract a set of
values (min/max/ave/total) for that month.
That use another graphing tool to draw them, OR create an rrd, import
them, and graph that.
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ve it start and
end on a CDP boundary.
Eg something like this :
Step=300
Width=400
End=$Now - ( $Now mod $Step)
Start=$End - ( $Width * $Step )
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C
ftware, or via it's web interface.
Also, in the footer of every list message is this :
___
>rrd-users mailing list
>rrd-users@lists.oetiker.ch
>https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
Clicking on that link takes you to the web page for the list wh
he 2nd and 3rd steps will effectively reset to the
counter to zero without all the wrap around detection stuff kicking
in and potentially putting in some huge number.
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t; 978305100:1 \
> 978305700:4
978304500 is not an integer multiple of 600 - therefore your data it
normalised into buckets that start/end on times that are.
http://www.vandenbogaerdt.nl/rrdtool/
See "Rates, normalizing and consolidating"
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that I have 1,5 Line of legend below my graph. This is
>looking ridicules.
Have you tried embedding line breaks - add "\n" at the end of an item.
Eg, from one of my scripts :
GPRINT:vdatainavg:\"%6.2lf %sBps\n\"
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your graph is quite correct.
For more detailed explanation, see Alex's tutorials at :
http://www.vandenbogaerdt.nl/rrdtool/
in particular the one on normalisation and consolidation.
BTW - full marks for providing the exact data used for the test, the
definition of your file, the actual out
an then get rrd graph to do logic
such as "if rate > some_threshold then draw it in red".
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) and
4 decimal places. %S means to scale the numbers and apply an SI
multiplier. Hence (I think) 1504 becomes 1.5040k
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t;
which might range from 1 to (say) 25 - but will tend to have a lot of
repetition if all 25 are normally available.
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of getting clouds would be to use an image
as the plot area initial fill (which isn't supported, though I'd
imagine it might not be hard to hack), then plot a solid white area
up to the cloudbase to obliterate it.
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of 60 would get you 60*86400 =
5,184,000 Ws, divide by 3600 to get 1440 Wh, and divide by another
1000 to get 1.44 kWh.
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ts averaged over the hour.
> It has lead me to a new
>question but I will create a new thread.
>
>Thanks for the links - they are good (but wow RRDTool is complicated).
Actually I'd suggest RRD Tool is actually quite simple - but the
concepts behind what it does are very d
ts used the last
>minute (some thing between 40-90).
http://www.vandenbogaerdt.nl/rrdtool/
and in particular :
http://www.vandenbogaerdt.nl/rrdtool/process.php
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to graph/extract data longer than 14 days will
automatically use the longer one.
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11 00:00 UTC" +%s`
step=300
values=( "10" "10" "20" "30" )
time=${start_time}
for value in ${values[@]}
do
time=$(( ${time} + ${step} ))
echo rrdtool update "${file}" ${time}:${value}
done
end_time=${time}
echo rrdtool fetch "${fil
e it drops out
>tons of space seperated data. Do I need to do recursive search for maximum
>with a script?
That's one way. Another is to use GRAPH to do the calculation(s) for
you and PRINT the value(s).
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e that in all cases, these are
not calculated from the values you put in, but from the normalised
values stored in the PDPs.
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of RRD. It would be easier for me, to
>make OCR trace on graph image, to extract those numbers :D
In RRD Graph you can use PRINT (not GPRINT) to print some numbers (to
StdOut I assume). So doa 'graph' that has not graph elements (LINE,
AREA, etc) and just PRINTs the values you want.
will fetch out the real data ...
You really need to script some sample data. It only need by fairly
simple, and preferably not silly large values that are hard to work
with in your head. By using known (and repeatable) inputs, you can
easily compare what you get with what you put in.
It may be th
#x27;ve zero idea what values you put in and when, or what you got out.
Can you post an example showing what updates you put in, and what you
get out. That means showing us the rrdtool update commands to see
what went in, and show the stored data obtained with rrdtool fetch.
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Vi
options
echo and so on
) | rrdcgi --filter >/dev/null
In many cases, the options are dynamically created with while or for
loops, and of course influenced by the parameters requested. When you
are stacking 500+ areas, and printing over 1k items in the legend,
then that lot wo
to suggest other than integer second resolution.
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_
to "undo" the previous update (hard since the older
data won't be there) and re-do it with the new values.
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er, if you feed in updates exactly on every step
boundary (bearing in mind that they are all an integer multiple of
"step" from unix epoch (midnight Jan 1st 1970)) then normalisation is
a null operation.
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Paul Halliday wrote:
>I am dumping whole numbers at exact intervals but still getting this:
What did you put in ?
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you could just update the RRD file as each report came in, and these
would be accumulated within each "step" period and then normalised.
You may find Alex's tutorials helpful :
http://www.vandenbogaerdt.nl/rrdtool/
particularly "Rates, normalizing and consolidating"
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felix00 wrote:
>Is there anyway to produce a pie chart within RRDTool ??
No, it's not what the tool was designed for.
You could, however, use rrdfetch to extract data and then plot it in
another program - but you cannot do anything (eg calculations) when
extracting data this way.
-
he first 100s of the next step.
So you see, for storage of partial updates, you only have to store
one tuple of data - the time for which we have data, and the "running
value" of that data.
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author Gl
tiple of the step
size from Unix epoch (midnight, 1st Jan 1970).
If you leave a gap longer than heartbeat between updates then the
data for that period of time is specifically unknown.
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at time ?
Genuine question, and similar questions arise if no updates are
received for the heartbeat interval.
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000 (400+600) when the value will be reverted to unknown. Only then
will you get an output at time 600.
Also, unless the next update (on or after time 600) is also 123, then
you won't get 123 as the result.
You may well find it useful to read Alex's tutorials at
http://www.vandenbo
rk you've done (and to all
the others who have contributed).
And seasons greetings.
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st :
The command used to create the rrd file.
The values you are updating the file with.
What you get out.
What you expected to get out.
With that information we should be able to help.
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like tabs are only
dealt with relative to the current bit of text I'm trying to lay
down, not to the line. So putting a tab after "Total" can line up the
end of the first bit of text, but I can't use tabs to take care of
the space taken by the colour blobs. So I'm
ecome a LOT easier to understand (and customise) once you know the
fundamentals which are well covered in Alex's tutorials. It does take
some effort to get your head round the way it works initially - it's
a significantly different type of storage to what most people are
familiar with
.oetiker.ch/rrdtool/doc/rrdflushcached.en.html
Near the bottom it gives the example :
rrdtool flush --daemon unix:/var/run/rrdcached.sock /var/lib/rrd/foo.rrd
That should be "flushcached" rather than "flush".
After this afternoon I'm getting back into RPN notation ;-)
7;t add the maximums to get a meaningful number. Eg, I might have
one router doing 1Mbps max, and the other doing 1Mbps max, but the
total traffic could be anywhere between 1Mbps and 2Mbps max depending
on how much overlap there is.
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ecause
of the difficulty of building a huge parameter list and the lack of a
"read the rest from stdin" option to rrdgraph. Unless you now tell me
that there is such an option and I've missed it !
>You can ask rrdcached to flush caches using 'rrdtool flushcached'
That&#
ditional columns. Is
>this possible?
AFAIK you are supposed to be able to use PRINT statements and have
the results output as text rather than generating a graph. I've never
tried with with a CDEF though (as opposed to printing a single value
VDEF) so I don't
h, that flushes the cache
but still accesses the local file doesn't it ?
2) Other than connecting to the socket, is there a way to trigger
caches to be written ? I tried :
>echo "FLUSH " >> /var/run/rrdcached.sock
but all I got was :
>-bash: /var/run/rrdcached.sock:
lling or anything. rrdcached wasn't around when I
originally set this up, it would certainly be simpler.
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storical data though. Could this unmount when the NFS share is
unavailable be automated ?
Any other ideas ?
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= 3,1040640971e+05
>rra[3].cdp_prep[0].unknown_datapoints = 0
In other words, you are asking for a graph of 8640 values from a data
set that only contains 600. The 'best' data set that contains the
number of data points (or rather, covers the time interval) asked for
is th
ts again
from zero. Because you inserted the unknown value, the previous
counter values aren't used when working out the rate and you can't
get that spike.
You can also apply limits, or use the derive datatype.
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the
data you ask it to plus a few internal values used to calculate it.
If you want to plot/extract data for a higher resolution, then you'll
have to alter your database to hold the extra data, and possibly
modify your collection routines to make sure it's populated in a
amount",
and "Rates, normalizing and consolidating".
Also note that your primary data points start/end
on well defined step boundaries. These are ALWAYS
a multiple of the step period from unix epoch
(midnight, 1st Jan 1970 UTC). Rrdtool always
works in UTC internally.
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Simon
n buckets that start/end on a timestamp
which is an integer multiple of the bucket length. So data
consolidated into 300s periods will always use periods whose
timestamp is an integer multiple of 300.
1289262000 is a multiple of 300, 1289261975 is not.
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testing.rrd AVERAGE -r 300 -s 1289261655 -e 1289261975
>1289261640: nan
>1289261700: nan
>1289261760: 0.00e+00
>1289261820: 0.00e+00
>1289261880: 0.00e+00
>1289261940: 0.00e+00
>1289262000: nan
And if you round your start a
y hiding them from you.
In addition, every list message has this in the footer :
>___
>rrd-users mailing list
>rrd-users@lists.oetiker.ch
>https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
Go there and you can unsubscribe.
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lot harder.
Could you get by by keeping a lower resolution data set for a year or
two ? An even lower res for longer ?
While it's a lot more work, could you keep one active RRD (with
historical data for say a year), and then dump/munge/import the data
you want to archive in some month end
rage. The calculation is (current -
previous)/time = rate
Eg, store 1000 at time 0, store 4000 at time 300, stored value is
(4000-1000)/300 = 10
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umber.
See Alex's tutorial on normalisation and consolidation at
http://www.vandenbogaerdt.nl/rrdtool/
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Christmas stocking fillers. Some ava
anomalies ? I've had a very quick look and the
numbers seem about right to me. You do understand that RRD tool only
ever stores rates don't you ?
Ie, updates of :
1287866340:80740899
1287866370:80741789
80741789 - 80740899 = 890
890 / 30 = 29.667
value stored :
1287866370: 2.9
the actual DB content:
I don't want to see what's in the database. Please provide a set of
update values that reproduce the problem. If we don't know what went
in, then we cannot even guess at whether what comes out is correct or
not.
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t; as I was assuming
your were immediately storing real values after the reset (and
wondering why the zeros before the spike).
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ents they are using to a text file - that
way, when you next see the problem occur, your can refer to the text
file and see what actual updates were done - and replay them into a
fresh file a step at a time while monitoring the result.
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wing data from Sunday (there was no earlier data so there should
be blank pixels for that) through to Friday 1am (there is no later
data and there should be blank pixels there as well).
See Alex's tutorial on normalisation and consolidation at
http://www.vandenbogaerdt.nl/rrdtool/
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nd end times which
exactly match the boundaries of the stored data buckets. Also note
that all times are relative to UTC, so if your timezone is +1, your
one day periods run from 1am to 1am local time.
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r to
create a timestamp:key:value record in a history table when a field
changes perhaps ?), but it does mean you'll have to roll your own
programs to analyse the data.
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e numbers and
display them as part of the web page.
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__
ible. You may need to
artificially scale some of your data - IIRC one graph I did, I
plotted T/10 so that temperature scaled to fit something else on the
graph.
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abase.
See Alex's tutorial on normalisation and consolidation at
http://www.vandenbogaerdt.nl/rrdtool/
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make
RRD Tool think that the times you are feeding it are UTC rather than
your real local timezone.
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t;
By far the quickest and easiest way to
unsubscribe is to click on the link
mailto:rrd-users-requ...@lists.oetiker.ch?subject=unsubscribe
and send the message that's created. This must be
sent from the address you subscribed under. IIRC
you will get a confirmation
me that the default is 300
seconds if not specified.
What you posted should work.
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covers period of time, and then use a VDEF to show the average
of that.
Form the docs :
>Note that currently only aggregation functions work in VDEF rpn
>expressions. Patches to change this are welcome.
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ntering data every 5 minutes, it may take 2 or 3 updates before data
appears.
Also, is it a typo/copy&paste error, because I don't see a step
declaration in that rrd tool create command ?
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s red.
I'm sure there are other ways of doing it. One other obvious way is :
CDEF:alarm1=op_pc_max,${Plimit},GT,op_pc_max,UNKN
which does much the same thing - sets alarm1 to the value if it's
greater than the limit, or unknown if it isn't.
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gt;
>Can i save or redirect output of this "function" in file or standard output
>?
Use PRINT instead of GPRINT ?
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nknown and you still want to get an answer,
then you might want :
CDEF:sum=a,UN,0,a,IF,b,UN,0,b,IF,+,c,UN,0,c,IF,+, ...
which means :
if a is unknown, then use 0 else use a
if b is unknown, then use 0 else use b
add the previous values (a and b)
if c is unknown, then use 0 else use c
add the previous
riod, multiply by the accumulator period (eg 86400
for 24 hours), and then display the result.
* My graphs aren't the same periods - for example, my "month"
actually shows about 6 weeks, it's just the way the number of pixels
and consolidation periods works out.
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DEF:availpct2neg=0,availpct2,*,50,-
2) try a different formula, eg
CDEF:usedpct2neg=usedpct2,-1,*
CDEF:availpct2neg=availpct2,-1,*
See if either make a difference.
Hmm, takes another look and consults the docs ...
But before doing that, you may want to take a look at your Y axis
scaling option
3.2lf%Sb"\\j \
GPRINT:usedpct1:MAX:"maximal used disk\\:%3.2lf%%"
GPRINT:usedpct1:AVERAGE:"average used disk\\:%3.2lf%%" \
GPRINT:usedpct1:LAST:"current used disk\\:%3.2lf%%"\\j
GPRINT:availpct1:MAX:"maximal free disk\\:%3.2lf%%" \
GPRINT:availpct1
And when putting in end of day updates, a timestamp of 23:59:59 (or
earlier) will not complete a time slot - so you will only get back
'unknown' for that day. You do need to use 00:00:00 or later.
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Visit http://www.magpiesnestpublishing.co.uk/ for books by acclai
has used it as a bitmap, so 128 means one
thing, 64 means something else - so "fans running" and "nothing"
averages to "sprinklers on" !
--
Simon Hobson
Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed
author Gladys Hobson. Novels - poetry - s
7;ll get an error if the last update goes over the minute
and is the same time (or even later) than the next minutes invocation.
But since it's for something that's not critical either on timing or
accuracy then I'm not that bothered.
--
Simon Hobson
Visit http://www.magpiesne
.
I use RRD Tool for two main jobs at work - one is rate based (network
traffic flows), the other is gauge based (temperatures). It works
equally well for both.
Your argument is like saying "I don't have any drills, it's the
hammers fault that it doesn't make tid
of being 7 seconds late, you could use a timestamp of
00:00:00.
Obviously you may some some precision in timing, but if your primary
concern is to avoid normalisation then overall you gain.
--
Simon Hobson
Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed
author Gladys Hob
No it won't - except under special circumstances that you can use
anyway. If you do not feed in an update **exactly** on every step
boundary then normalisation will occur - as per the tutorial I
previously posted a link to, you have read it I assume ? This is how
rrd works, it would require massi
idation
without breaking that.
See http://www.vandenbogaerdt.nl/rrdtool/
In particular, see the tutorial on "Rates, normalizing and consolidating"
for an explanation of what rrd tool does.
--
Simon Hobson
Visit http://www.magpiesnestpublishing.co.uk
raph. I'd forgotten that, I don't
know if it's something that got added since I started with rrdtool,
or if I'd just forgotten about it.
--
Simon Hobson
Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed
author Gladys Hobson. Novels - poetry - short stories - ideal
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