I have one setup one indexer and one splunk search head.
Indexer has 64 RAM and 16 CPU core and SH as 128 CPU and 32 core.
Indexing per day 25 to 30 GB only. On investigation found all queues for fill ration are full .
What should i do.
An indexer should be able to process way more data before any queues fill up. Take a look into the MC > Indexing > Data Quality dashboard. Do you see timestamping, line breaking or any other issues? You might want to look for any errors and warnings regarding getting your data in and go from there fixing the issues.
Also check whether your server got enough IOPS. Maybe do a test with bonnie++ to see whether you're meeting the 800+ minimum requirements.