Fwd: FW: Java heap memory is low but process memory isstill high

liu_wei · February 25, 2015, 11:08pm

Hi everyone,

Just wondering if anyone has encountered similar things before I dig more
into Java memory management. So we found machines are constantly in high
memory usage although the “reported” memory usage from ElasticSearch is
low. A couple of points:

  Java Heap Memory(top left chart) drops under 2G, which I guess is

mainly because of GC on old pool (bottom right chart)

```
  FieldData usage is low (top right)
```

  OS memory never drops (bottom left chart). When I login to the

machines, the Java process is still taking 12~13GB memory.

Anyone had similar problems before?

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