Timespan browsing

Instigater · Post by **Instigater** » Mon Dec 26, 2005 1:34 pm

I would like to see timespan scrolling feature. As you see, I have zoomed in to roughly 40 hours. Pressing buttons below the graph (red in my imangination) should output the graph that displays 40 hours before or after this current graph. This should give me quite quick and detailed overview on particular data.
Technical realization.
We can see graph technical details by pressing that wrench button.

Code: Select all

/usr/bin/rrdtool graph - \
--imgformat=PNG \
--start=1135454479 \
--end=1135547647 \
--title="UPS-LT-AEC - Output Loading" \
--base=1000 \
--height=120 \
--width=500 \
--alt-autoscale-max \
--lower-limit=0 \
COMMENT:"From 2005/12/24 22\:01\:19 To 2005/12/25 23\:54\:07\c" \
COMMENT:"  \n" \
--vertical-label="percent" \
--slope-mode \
DEF:a="/var/www/localhost/htdocs/cacti-0.8.6g/rra/upsltaec_load_875.rrd":load:AVERAGE \
LINE2:a#8D00BA:"Load"  \
GPRINT:a:LAST:"Current\:%8.2lf %s"  \
GPRINT:a:AVERAGE:"Average\:%8.2lf %s"  \
GPRINT:a:MAX:"Maximum\:%8.2lf %s\n"

Interesting part is this:

Code: Select all

--start=1135454479 \
--end=1135547647 \

All we have to do is just subtract start time from end time. This give us current timespan value.

Adding (to go to future)

Code: Select all

--start=1135547647 \
--end=1135640815 \

or subtracting (go deeper into past)

Code: Select all

--start=1135361311 \
--end=1135454479 \

from current values will represent nearby graphs of current timespan.

What do you think? Is it useful or not?

PS. Soon going to post templates for AEC UPSes.

Post by **gandalf** » Thu Dec 29, 2005 4:00 pm

Does the Date/time Selector not fill your needs? This is not exactly, what you've asked for, I know. But shifting would surely depend on the timespan of the given graph. E.g. a daily graph would be shifted by something between 12 and 24 hours, whereas a yearly graph better should be shifted by a somehow bigger amount

So what about shifting, lets say, by 75% of the given timespan?
Reinhard

Post by **rony** » Thu Dec 29, 2005 4:48 pm

And what if the rra span you are viewing does have data for the interval?

Instigater · Post by **Instigater** » Fri Dec 30, 2005 4:43 am

lvm -> of course it shifting depends on current zoom. 75 percentage use might be more user-friendlier.

rony -> I believe there should be some time and/or more verification done. I'm not programmer so it's up to you to implement or not . Right now it's just an idea about what cacti lacks to be even more better.

Post by **TheWitness** » Fri Dec 30, 2005 10:35 am

This is actually pretty easy, under the timespan selector, it would display "Custom" and the date range would be displayed as expected. The real issue is how do we make the "forward" and "backward" links. Some DHTML or JavaScript tricks might do it.

TheWitness

Post by **gandalf** » Sat Feb 11, 2006 3:03 pm

Implemented as a patch to svn branch 0.8.6h, see Time Shifter
Reinhard

Post by **TheWitness** » Sun Feb 12, 2006 6:34 pm

lvm,

You rule!

TheWitness

Post by **gandalf** » Mon Feb 13, 2006 12:59 pm

Confirmed to work with cacti 0.8.6g as well.
Currently thinking about version 0.2

Reinhard

Post by **gandalf** » Sat Feb 25, 2006 8:05 am

Find my new work at [revisitied] Time Shifter V0.2
Reinhard

wizard · Post by **wizard** » Mon Mar 06, 2006 12:32 pm

Thanks - this is way cool.

Now, if I can get two timeframes side-by-side... my pet project

Post by **gandalf** » Wed Mar 08, 2006 2:43 pm

using two browser tabs with different settings does not help?
Reinhard

wizard · Post by **wizard** » Wed Mar 08, 2006 3:08 pm

Yes, it helps, but it does not have the same visual impact as seeing both graphs at the same time.

Cacti

Timespan browsing

Timespan browsing

Installed on 0.8.6f successfully

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