Opened 16 years ago

Closed 12 years ago

Last modified 10 years ago

#34 closed defect (use support list)

error calculating Multi Target

Reported by: human Owned by: somebody
Version: Keywords:
Cc:

Description

I need to show one of graphs as differnce between two ports.

Part of .cfg file:

Target[istrf]: -#Fa5/12:xxx@cat-6509: - #Fa5/43:xxx@cat-6509:

Both Fa5/12 and Fa5/43 graphs displayed correctly, but istrf graph periodically shows unnormous "peaks". I think that is because counter overflows, which processed right when calculating single target, but with error when we using multi target.

Examples of all three .log's and istrf-day.png in attach.

Attachments (4)

cat-6509.is.lan_fa5_12.log (77.4 KB) - added by human 16 years ago.
cat-6509.is.lan_fa5_43.log (59.1 KB) - added by human 16 years ago.
istrf.log (48.5 KB) - added by human 16 years ago.
istrf-day.png (2.3 KB) - added by human 16 years ago.

Download all attachments as: .zip

Change History (7)

Changed 16 years ago by human

Changed 16 years ago by human

Changed 16 years ago by human

Changed 16 years ago by human

comment:1 Changed 16 years ago by human

I'm sorry to not supply additional info.

mrtg v.2.15.2

If you need additional feedback please contact me by e-mail ivb@…

comment:2 Changed 12 years ago by oetiker

  • Resolution set to use support list
  • Status changed from new to closed

the problem is that mrtg builds the difference between the two input values and only later builds the diffs ... this causes spikes as the counters wrap. for a better solution, use rrdtool with STACK.

cheers tobi

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