[rrd-users] rrd-users Digest, Vol 19, Issue 13
Horsky, Laura
lmgoodbu at uncc.edu
Tue Jul 15 18:20:37 CEST 2008
Thanks Nate. Switching to Gauge and then recreating the rrd files seems
to have fixed the problem.
Thank you!
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Today's Topics:
1. outputting lines and legends in order of weighting
(Joseph Mack NA3T)
2. Re: 5 minute data -- RRD (Simon Hobson)
3. Re: outputting lines and legends in order of weighting
(Alex van den Bogaerdt)
4. Re: outputting lines and legends in order of weighting
(Joseph Mack NA3T)
5. Help with RRDTOL for begginer (Ghaalib Garrin johnson)
6. Newbie question about last_ds and value (Horsky, Laura)
7. Re: Newbie question about last_ds and value (nate)
----------------------------------------------------------------------
Message: 1
Date: Thu, 10 Jul 2008 18:04:10 -0700 (PDT)
From: Joseph Mack NA3T <jmack at wm7d.net>
Subject: [rrd-users] outputting lines and legends in order of
weighting
To: rrd-users at lists.oetiker.ch
Message-ID: <Pine.LNX.4.64.0807101749550.12281 at wm7d.net>
Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed
I'm plotting (among other things), the time offset between
the local clock and several ntpd peers. For each peer I plot
the jitter as a band of light color (say light red) with the
actual time offset as a line (say dark red) in the middle of
the band.
Since some of the ntp peers are of different stratums
(strata?), I plot the data with the least accuracy first,
allowing the most accurate data (and jitter bands) to
overwrite the least accurate data.
All fine so far.
However when I plot the boxes in the legend with the colors
and value of offset for each ntp peer with the lowest
priority lines being written first, the lowest priority peer
is written out in the legend first. Is there a way to write
out the highest priority legend (and its color) first?
I'm happy to do some fakery, eg make two passes at writing
out the data (eg one for the lines in one order and another
for the legend in the other order), but I can't figure how
to do it.
Any suggestions?
Thanks Joe
--
Joseph Mack NA3T EME(B,D), FM05lw North Carolina
jmack (at) wm7d (dot) net - azimuthal equidistant map
generator at http://www.wm7d.net/azproj.shtml
Homepage http://www.austintek.com/ It's GNU/Linux!
------------------------------
Message: 2
Date: Fri, 11 Jul 2008 07:47:38 +0100
From: Simon Hobson <linux at thehobsons.co.uk>
Subject: Re: [rrd-users] 5 minute data -- RRD
To: rrd-users at lists.oetiker.ch
Message-ID: <a0624081fc49cb0f6234d at simon.thehobsons.co.uk>
Content-Type: text/plain; charset="us-ascii" ; format="flowed"
James Wade wrote:
>I am using Hobbit and the RRD database for
>monitoring. If I'm collecting 5 minute data, when does the
>database begin rolling up the data (averaging it).
>
>Does it keep a months worth of 5 minute data
>and then does a daily average after a month?
>Is there a process that compacts the database?
>Just wondering how the process works.
First off, try Alex's excellent tutorials at
http://www.vandenbogaerdt.nl/rrdtool/
But more specifically, each time you do an update, the program checks
to see if any time boundaries have been passed. Eg, if you updated
every minute for an rrd that has a 5 minute step size, then 4 time it
will just accumulate the data, the fifth time (ie when you pass a 5
minute boundary) it will process that step.
The consolidations are handled in a similar manner, so a 2 hour
consolidation would be processed each time an update occurs that
crosses a 2 hour sample period, and so on.
There is no database compaction, the rrd database is unique as far as
I know in having a fixed size that is set when it is created. Each
stored data set is held in a number of preconfigured storage bins -
the bins having been allocated at the time the rrd file was created.
Each set is treated as a circular buffer (hence the "round robin" in
the name), so data is never moved, just the pointer to where the
beginning/end is located gets altered along with the contents of that
location.
------------------------------
Message: 3
Date: Mon, 14 Jul 2008 01:22:26 +0200
From: Alex van den Bogaerdt <alex at ergens.op.het.net>
Subject: Re: [rrd-users] outputting lines and legends in order of
weighting
To: rrd-users at lists.oetiker.ch
Message-ID: <20080713232226.GB2539 at ergens.op.het.net>
Content-Type: text/plain; charset=us-ascii
On Thu, Jul 10, 2008 at 06:04:10PM -0700, Joseph Mack NA3T wrote:
> However when I plot the boxes in the legend with the colors
> and value of offset for each ntp peer with the lowest
> priority lines being written first, the lowest priority peer
> is written out in the legend first. Is there a way to write
> out the highest priority legend (and its color) first?
>
> I'm happy to do some fakery, eg make two passes at writing
> out the data (eg one for the lines in one order and another
> for the legend in the other order), but I can't figure how
> to do it.
First draw the lines without a legend.
Then write a legend without drawing a line. To do this, you need
to draw something blank. And this in turn means you first need to
generate something blank.
If you have:
DEF:ds0=test.rrd:ds0:AVERAGE \
DEF:ds1=test.rrd:ds1:AVERAGE \
LINE:ds0#FF0000:ds0 \
LINE:ds1#0000FF:ds1 \
then you change above two LINE in below CDEF and four LINE:
CDEF:not=ds0,POP,UNKN \
LINE:ds0#FF0000 \
LINE:ds1#0000FF \
LINE:not#0000FF:ds1 \
LINE:not#FF0000:ds0 \
HTH
--
Alex van den Bogaerdt
http://www.vandenbogaerdt.nl/rrdtool/
------------------------------
Message: 4
Date: Sun, 13 Jul 2008 16:36:13 -0700 (PDT)
From: Joseph Mack NA3T <jmack at wm7d.net>
Subject: Re: [rrd-users] outputting lines and legends in order of
weighting
To: Alex van den Bogaerdt <alex at ergens.op.het.net>
Cc: rrd-users at lists.oetiker.ch
Message-ID: <Pine.LNX.4.64.0807131632230.26765 at wm7d.net>
Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed
On Mon, 14 Jul 2008, Alex van den Bogaerdt wrote:
> On Thu, Jul 10, 2008 at 06:04:10PM -0700, Joseph Mack NA3T wrote:
>
>> However when I plot the boxes in the legend with the colors
>> and value of offset for each ntp peer with the lowest
>> priority lines being written first, the lowest priority peer
>> is written out in the legend first. Is there a way to write
>> out the highest priority legend (and its color) first?
>>
>> I'm happy to do some fakery, eg make two passes at writing
>> out the data (eg one for the lines in one order and another
>> for the legend in the other order), but I can't figure how
>> to do it.
>
> First draw the lines without a legend.
> Then write a legend without drawing a line. To do this, you need
> to draw something blank. And this in turn means you first need to
> generate something blank.
thanks I've done a trial run and haven't got data which
differentiates my new way from the old way yet.
What I've done is draw the error/jitter bands in reverse
order, with no legend, then drawn the data lines, in forward
order with legend. The lines are narrow enough that I don't
really care if the last (lower precision) one overwrites the
first one.
>
> If you have:
>
> DEF:ds0=test.rrd:ds0:AVERAGE \
> DEF:ds1=test.rrd:ds1:AVERAGE \
> LINE:ds0#FF0000:ds0 \
> LINE:ds1#0000FF:ds1 \
>
> then you change above two LINE in below CDEF and four LINE:
>
> CDEF:not=ds0,POP,UNKN \
> LINE:ds0#FF0000 \
> LINE:ds1#0000FF \
> LINE:not#0000FF:ds1 \
> LINE:not#FF0000:ds0 \
>
> HTH
Thanks
Am keeping my eye on the data for some obvious lower
priority jitter bands obliterating the higher priority bands
Joe
--
Joseph Mack NA3T EME(B,D), FM05lw North Carolina
jmack (at) wm7d (dot) net - azimuthal equidistant map
generator at http://www.wm7d.net/azproj.shtml
Homepage http://www.austintek.com/ It's GNU/Linux!
------------------------------
Message: 5
Date: Mon, 14 Jul 2008 15:03:12 +0200
From: "Ghaalib Garrin johnson" <ghaalib.johnson at gmail.com>
Subject: [rrd-users] Help with RRDTOL for begginer
To: rrd-users at lists.oetiker.ch
Message-ID:
<f643648e0807140603s16cd1445xaf84242499af5600 at mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"
Hi there I'm still very much a beginner when it comes to rrdtool or mrtg
and
was wondering if there is anyone out there who has installed rrd on a
windows platform and how did they do it. We are currently testing mrtg
and
we do have stats in the database which we would not like to lose and I
want
to if it would be possible to move the current mrtg database over to
rrdtool
on windows 2000 platform. I would really appreciate any help or
suggestions
regarding this as I would really like to get this software working
correctly
without losing any information. I'm also having trouble understanding
which
other software should be run when I have rrdtool installed as well as
how I
go about installing rrdtool on windows. Thanks and best wishes
Ghaalib Johnson
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Message: 6
Date: Tue, 15 Jul 2008 11:22:47 -0400
From: "Horsky, Laura" <lmgoodbu at uncc.edu>
Subject: [rrd-users] Newbie question about last_ds and value
To: <rrd-users at lists.oetiker.ch>
Message-ID:
<00B3B5B3AD8B1B46BDA60B483B3EEB1F2C3BCE at EXEVS02.its.uncc.edu>
Content-Type: text/plain; charset="us-ascii"
I am fairly new to troubleshooting rrd files, so please be patient with
me.
I am trying to graph the memory usage of a device. I can successfully
capture the oid value, but I think it is in the wrong place in the rrd
file.
What I am seeing is:
<ds>
<name> memory </name>
<type> COUNTER </type>
<minimal_heartbeat> 600 </minimal_heartbeat>
<min> 0.0000000000e+00 </min>
<max> 1.0000000000e+08 </max>
<!-- PDP Status -->
<last_ds> 260580 </last_ds>
<value> 2.1045329206e+09 </value>
<unknown_sec> 0 </unknown_sec>
</ds>
The < last_ds> of 260580 is actual data from the oid, which I thought
would also be the "value". What am I doing wrong here? Where is the
<value> coming from?
This rrd file is being generated in Cacti if that helps and within Cacti
I have the following values set:
Data source = memory
Minimum value = 0
Maximum value = 100000000 (this is artificially high right now while I
figure out the value problem)
Data Source Type = Counter
Heartbeat = 600
Any help would be greatly appreciated.
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Message: 7
Date: Tue, 15 Jul 2008 09:08:47 -0700 (PDT)
From: "nate" <rrdtool at aphroland.org>
Subject: Re: [rrd-users] Newbie question about last_ds and value
To: rrd-users at lists.oetiker.ch
Message-ID:
<2457.65.102.144.193.1216138127.squirrel at webmail.linuxpowered.net>
Content-Type: text/plain;charset=iso-8859-1
Horsky, Laura wrote:
> I am fairly new to troubleshooting rrd files, so please be patient
with
> me.
>
>
>
> I am trying to graph the memory usage of a device. I can successfully
> capture the oid value, but I think it is in the wrong place in the rrd
> file.
[..]
> <type> COUNTER </type>
This should probably be a gauge, of all the different types of hosts
I am monitoring memory usage it's always a gauge.
nate
------------------------------
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