Why maximum traffic change when I change the date?

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davide
Posts: 9
Joined: Fri Mar 25, 2005 9:14 am

Why maximum traffic change when I change the date?

Post by davide »

I cannot understand this behaviour:

I have two graph "Interface - Traffic (bits/sec, 95th Percentile)" and "Interface - Traffic (bytes/sec, Total Bandwidth)".

On both the graph I have a simple but incomprehensible behaviour:

On the graph for the date 2007-03-26 12:57 - 2007-03-27 12:57 I see a maximum inbound traffic of 902.85 k

On the graph for the date 2007-03-20 11:57 - 2007-03-27 12:57 I see a maximum inbound traffic of 601.75 k

Maximum is always maximum also if date change!

I attach screen shot for better understanding

Any conseil will be appreciated

I'm using cacti 0.8.6i
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Davide
davide
Posts: 9
Joined: Fri Mar 25, 2005 9:14 am

Post by davide »

No one can answer to me? :cry:
Davide
elnino
Cacti User
Posts: 205
Joined: Tue Mar 08, 2005 9:51 pm

Post by elnino »

Looks correct to me. The "maximum" shows you the highest point on the graph you are currently viewing. If you change the date range, it will find the maximum point for those new dates.


Brandon
davide
Posts: 9
Joined: Fri Mar 25, 2005 9:14 am

Post by davide »

elnino wrote:Looks correct to me. The "maximum" shows you the highest point on the graph you are currently viewing. If you change the date range, it will find the maximum point for those new dates.
Brandon
Yes, is true, the "maximum" show the highest point on the graph currently viewing.

But how is possibile that the maximum of the interval from 2007-03-26 12:57 to 2007-03-27 12:57 is 902.85 k and the maximum of the interval from 2007-03-20 11:57 to 2007-03-27 12:57 is 601.75 k ??????

The second interval of time includes the first interval, so the maximum have to be the maximum of the two intervals!!

Anyone that can point me in the right direction to let me clarify will be appreciated.
Davide
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gandalf
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Location: Muenster, Germany
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Post by gandalf »

Find help at http://docs.cacti.net/node/275. This issue is correlated to "consolidation". Solution: do not graph AVERAGE if you're interested in MAXimum. Better solution: graph both AVERAGE and MAXimum of the same data source.
Reinhard
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