Hi Robert, Thanks for the detailed info. Here is what we have: 10 data only nodes, 192g ram each, 64g given to ES, java6. We have more than 40 indices actively receiving new data. Max indexing rate for a single index is 3k/s, total rate us around 50k. We still found timeout occasionally, but it doesn’t seems GC related (according to GC log info). It seems we have similar amount of data :). You do raise an interesting point. I could test a smaller heap to see if I could get better write performance. One more question, have you got any OOM issue with some huge query?
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