Hi MongoDB Community,
We are observing performance issue in our replica-set having 29 nodes. Application use secondary read preference and read concern "majority " or “linearizable”. Find query running against GridFS .GridFs collection is indexed properly as per mongoDB recommendation .Find query has different execution time and varies from 0 ms to ~700ms(Attached for more details “QueryExecutions_Mtool”).Query using index and explain plan is always same. “queryHash:6DAB46EC” is always same but different execution times.
Server capacity is same for all the nodes as build based on same AMI.
We tired to diagnosed but not able to find-out root cause .Kindly help to diagnose the issue. We have attached the required details ,If any other details required please let us know.
Thanks in advanced .
Connection_String_sample.txt (1.0 KB)
Disk_stats.txt (11.5 KB)
Mongod_Configuration_file.txt (648 Bytes)
MongoStat.txt (51.4 KB)
QUERY.txt (948 Bytes)
QueryExecutions_Mtool.txt (9.5 KB)
ServerConfiguration.txt (233 Bytes)
WiredTIger_Cache_Stats_from_high_utilized_nodes.txt (29.1 KB)