I have enabled the Network_Traffic data model with acceleration going back 32 days. After a recent Splunk upgrade to
Splunk ES: 5.2.2
I noticed that my Network Traffic data model count volumes dropped off after going back about 2 weeks, despite an acceleration status of 100% complete. Found that by setting allowoldsummaries=t I could get all of the data.
Tried re-indexing the data model. It seemed to pick up data further back, but still not all of it.
I can check the model with this:
| tstats summariesonly=t allow_old_summaries=t count as DMcountWithOld from datamodel=Network_Traffic.All_Traffic by span=1d _time
| append [tstats summariesonly=t count as DMcountNoOld from datamodel=Network_Traffic.All_Traffic by span=1d _time ]
| timechart span=1d sum(DMcountWithOld) as DMcountWithOld sum(DMcountNoOld) as DMcountNoOld
and I still see results diverge starting about 2 weeks back
Any ideas on why the data model acceleration fizzled out?