IxpBuild or IxpOperate Logs Message Same Data Timestamp Amount Too High

Asset ID:	1-71-1933173.1
Update Date:	2018-05-03
Keywords:

Solution Type Technical Instruction Sure

Solution 1933173.1 : IxpBuild or IxpOperate Logs Message Same Data Timestamp Amount Too High

Applies to:

Oracle Communications Performance Intelligence Center (PIC) Software - Version 9.0.0 and later
Tekelec

Goal

Why are we getting below message in IxpBuild logs for some sessions :

0905:084403.236 DTS2 Stream 'B_MAP' same data timestamp amount too high: 09/05/2014 8:43:56.0 [13281/DtsProducerBuffer.cpp:241]
0905:084403.336 DTS2 Stream 'B_MAP' data with same time: 09/05/2014 8:43:56.0 dropped [13281/DtsProducerBuffer.cpp:228]
0905:084403.339 IXP3 Send alarm: xDR Loss (major event) Stream = B_MAP [13281/DmAlarm.cpp:214]
0905:084403.913 DTS2 Stream 'B_MAP' same data timestamp total amount dropped: 4782240(Bytes) [13281/DtsProducerBuffer.cpp:250]
0905:084403.942 IXP3 Send alarm: xDR Loss clear (clear event) Stream = B_MAP [13281/DmAlarm.cpp:214]

Or in IxpOperate:

0420:114625.837 OPR2 pOutStream->StoreData failed -> data lost [41895/OpPluginsSequence.cpp:1117]
0420:114625.837 DTS2 Stream 'O_outpu' same data timestamp total amount dropped: 157935(Bytes) [41895/DtsProducerBuffer.cpp:250]

Solution

If session have lots of timer xDR in the session, this article will explain how to reduce the risk of having this issue.

Following points are usually enough in most cases:

Reduce timer xDR
Investigate why there is so many Timer xDR and improve correlation rate. This can be due to wrong reconstitution mode (xDR Builder parameter) or missing trafic.
Garbage period
Garbage period (usually equal to 60 seconds) can be reduced to 30 seconds (but not below).
For KPI streams, reduce the amount of lines generated at a given period

Finetune DTS parameters
Two parameters have to be added to LongParam (ivi LongParam to) on the primary IXP:

No|DtsMaxDataTimeSDrop|25|
No|DtsMaxDataTimeSWarn|20|

The values for these 2 parameters are the default ones so they need to be adjusted depending on the situation.
In general the values are double, so the final content in LongParam is the following:

No|DtsMaxDataTimeSDrop|50|
No|DtsMaxDataTimeSWarn|40|

All IxpBuild processes of the IXP subsystem must be restarted to have the changes applied.

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