2.2.1: graph display of "unixtime" items

[steveboyson]

Hi all,
could it be that the graph display procedure for items configured as "unixtype" changed from 2.0 to 2.2?

I am in the process of migrating a 2.0 install (applicance) to a 2.2 (from scratch).
While almost all of my templates work in the ne environment, I found that items with that particular unit behave different regarding graphs.

I have a continously increasing counter which delivers the last run date as "unixtime".
In 2.0 it shows a straight rising line which is the expected behaviour.
In 2.2 it shows only a horizontal line while it still updates the graph legend with current value.

2.0: https://www.netzwerk-aktiv.com/owncl...49b24de177e8f4

2.2: https://www.netzwerk-aktiv.com/owncl...05a8579e985bb6

Does someone else see this as well? How to fix?
Thanks for any hints!

[aib]

Is it correct that the first graph is from 17 Jan to 16 Feb (1 month length) and the second graph is only for last 12 hours (16 Feb 00:35 - 16 Feb 12:35) ?

When you have so different scale on graphs you cannot say correctly how fast rising the line, correct?

[steveboyson]

Yes, since the 2nd install (2.2.1) is a pretty fresh install.

It still shows the above described graph...

[aib]

Well, on the graph from 2.2 version I can see the different numbers for Last and Min value.
It means that you are collecting information correctly.
But the graph cannot be shown correctly - so small delta for so big number.

2014-02-16 11:07:12 => 1392548832
2014-02-16 00:07:11 => 1392509231
1392548832 - 1392509231 = 39601
100* (39601 / 1392548832) = 0.0028437%

It's hard to see the changing of graph which is less than three thousandths of percent, right?

[steveboyson]

That is not the point. Please see screenshot here of working 2.0 install.

https://www.netzwerk-aktiv.com/owncloud/public.php?service=files&t=e9e324b909ba3d4bf7742e19af84884a

It is also an intervall of 12 hours and displays correctly.

[EDIT] In my opinion it doesn't matter what intervall is used. If I expect increasing values once per hour and have an intervall of 12 hours I would expect to see 12 new values. I get these values but they are not displayed correctly when graphed.

https://www.netzwerk-aktiv.com/owncloud/public.php?service=files&t=5c64f3db2d96c93c2578f7326bb934fb

[aib]

Do you see the difference in Scale of two your graphs?

(Sorry, I cannot post any image/pictures/links because of the forum settings:

Too many live links/images found in your post content. 
Please edit your post or contact the administrator.

)

In the first graph I can see the huge range between Y axis MIN value and Y axis MAX value :
min = ...0.30 19:40:00
max = ...1.24 16:06:40

In the same time on second graph the minimal and maximal value have not a big difference:
min = ..2.17 06:30:00
max = ..2.17 16:30:20

Did you try to manually setup the same scale on the first graph for item "Zabbix housekeeper: last end-time" as you have on the second graph?

[steveboyson]

Pls. see pic #3.

#2 (2.2.1, broken) and #3 (2.0, working) have the same x-scale of 12 hours.

[aib]

Sorry for my dumb question.
I still cannot understand your problem

Pic. #1 :
- Y axis (..1.12 05:13:20 to ..2.21 17:26:40) ~ 1 month and 9 days
- X axis (2014-01-17 14:26:28 - 2014-02-16 10:41:59) ~ 1 month

Pic. #2 :
- Y axis (..0.30 19:40:00 - ..1.24 16:06:40) ~ at least 4(four) year!!!
looks like - 2012.10.30 -> 2016.11.24)
- X axis from 2014-02-16 00:07:11 to 2014-02-16 11:07:12 ~ 12 hours

Pic. #3 :
- Y axis (..2.17 06:30:00 to ..2.17 16:13:20) ~ 10 hours
- X axis (17.02 6:52 17.02 18:52) = 12 hours

Now when we compare the scale of Y axis on picture #1, #2, #3 we can see the difference between those three numbers:
- for Pic. #1 scale ~ 1 month and 9 days
- for Pic. #2 scale ~ at least 4 years
- for Pic. #3 scale ~ 12 hours

Sorry if I explained it wrongly before.

Do you understand now what I meant before when I told you that you cannot correctly compare that three graphs?

[steveboyson]

Graph 2 (2.2.1)

https://www.netzwerk-aktiv.com/owncloud/public.php?service=files&t=3a778b8b5b3e27091705a8579e985bb6

from Feb 16, 00:35 to Feb 16, 12:35
==> 12 hours
showing a horizontal line --> WRONG

Graph 3 (2.0.10)

https://www.netzwerk-aktiv.com/owncloud/public.php?service=files&t=e9e324b909ba3d4bf7742e19af84884a

from Feb 17, 6:52 to Feb 17, 18:52
==> 12 hours
showing a constantly rising line --> CORRECT


So, yes! I pretty much think these graphs are compareable.

[aib]

I don't think so!

You have completely different scale for Y axis and you cannot compare those graph.

Use the same scale, draw new graph and then we will talk more about your graph.

[steveboyson]

Graph 2 has an y-axis starting at Feb 17, 6:30 and ending at Feb 17, 16:13
and displays the expected graph.

Graph 3 has an weird x-axis scaling (you're right on that!). Might be part of the problems. Nevertheless, no matter what scale I choose the displayed graph is just a horizontal line. Also when selected vial "latest data".

I consider that an error.

!!! Please note that the same backend script runs on both zabbix servers !!!
So the returned values are consistent (although of course not identical).

[aib]

When you are using Simple Graph function - you cannot change the Y axis settings (MIN and MAX)

But you still can create your own graph and change the default value for Y axis MIN and MAX settings.

[steveboyson]

The graph type is defined in a template and is of type "Normal" with Y- and X-axis set to "calculated".

When I choose the item data from "last data" the graph looks identical (wrong).
And that is AFAIK a "simple graph" since it has noc configuration options.
Still broken.

[aib]

Finally, after some exercises with my own Zabbix installation, I completely agree with you.

The scale for Y axis was calculated in the weird way.
And there is no correct way to get smoothly rising up line without manual configuration of graph, even when you collecting information for the period longer than 1 month.

Sorry if I gave you hard time to argue with me.

[steveboyson]

Bump and pushing up.
Meanwhile we did a 2nd install - this time on Debian wheezy.

Zabbix server v2.2.2 (revision 42525) (12 February 2014)
Compilation time: Feb 16 2014 19:40:11

Oh wonder wonder - behaviour is the same.

Under "last values" I have:

Timestamp Value
2014.Mar.07 20:46:41 1394220493
2014.Mar.07 19:46:41 1394216892
2014.Mar.07 18:46:41 1394213290
2014.Mar.07 17:46:41 1394209688
2014.Mar.07 16:46:41 1394206086
2014.Mar.07 15:46:41 1394202485

but the graph still shows a horizontal line and not a continiuos diagonal line.

Anyone?