ES Version: 6.3.0
OS Version: 7.4
Java Version: 1.8.0_131
cpu cores: 20
memory: total 64g heap 32g
There is nearly only the ES service on the server, I wonder should I decrease the heap size less than 32g? Or total 64g is not enough?
Or maybe there are too many shards in the cluster?
Maybe buff/cache is not enough?
Please don't post pictures of text, logs or code. They are difficult to read, impossible to search and replicate (if it's code), and some people may not be even able to see them
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