Hello, I setup ES cluster and started to load logs into it. Almost all parameters are in default except ES_JAVA_OPTS="-Xms10g -Xmx10g" I see that virtual memory usage of java process (which runs ES) constantly increases. After about 12 hours of running it consumes 264GB: PID USER PR NI VIRT RE…

Yes, it's the OS caching files.

[image] warkolm: That's what the 50% rule is for I read this chapter. I don't quite understand you: I have 256GB RAM, 10g heap size and (at the moment) 351GB of virtual memory used. Virtual memory usage grows steady after ES startup.

Ah, yes, I understand now: it is the size of index files which Lucene mmap()s.

Java virtual memory usage

Elastic Stack Elasticsearch

warkolm (Mark Walkom) February 10, 2017, 7:54am 2

Yes, see https://www.elastic.co/guide/en/elasticsearch/reference/5.2/heap-size.html

That's what the 50% rule is for

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Java virtual memory usage

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