PurgeOldData is not working in TabMon

[abssenthil]

Hi, I have Installed Tabmon and its working for last few years. We are facing huge performance issue (takes about 15 to 20 mins) though we had setup purge old data to just 30 days. Our Tableau server has 7 nodes.

The poll interval was set to 30s and now increased to 300s. When i look at the data, it still returns 2 years worth though we have the 30 days setup.
Please help me if someone have already faced similar issue.

Thanks.