Thanks @jangaraj for the reply.
Once the ingestion rate started choking up we doubled up the memory size. 8cpu and 64GB ram. But still that didn’t improved the ingestion rate. However I noticed in one of the influx topic (What is the highest-performance method of getting data in/out of InfluxDB - #6 by JeremySTX); if the series rate is over 90% under the same measurement then the issues bound to happen. In my case there was only one measurement and obviously 100% of the series was under the same measurement. I then tweaked the settings in the conf file which helped to get back the ingestion rate back to normal.
I guess the utility link shared by you (written by Edd Robinson and other contributors) will be handy going forward for benchmarks.
-Avin
