Yan Zhao created ZOOKEEPER-4792:
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Summary: Tune the env log at the start of the process
Key: ZOOKEEPER-4792
URL: https://issues.apache.org/jira/browse/ZOOKEEPER-4792
Project: ZooKeeper
Issue Type: Improvement
Components: server
Affects Versions: 3.9.1
Reporter: Yan Zhao
At the start of the process, it will print the env info in the log.
There are three logs for the memory metrics.
{code:java}
// Get memory information.
Runtime runtime = Runtime.getRuntime();
int mb = 1024 * 1024;
put(l, "os.memory.free", runtime.freeMemory() / mb + "MB");
put(l, "os.memory.max", runtime.maxMemory() / mb + "MB");
put(l, "os.memory.total", runtime.totalMemory() / mb + "MB");
{code}
https://github.com/apache/zookeeper/blob/9e40464d98319b4553d93b12c6d7db4d240bbce9/zookeeper-server/src/main/java/org/apache/zookeeper/Environment.java#L88-L90
It's misleading for the user, use jvm as the prefix will be better.
Change to:
{code:java}
// Get memory information.
Runtime runtime = Runtime.getRuntime();
int mb = 1024 * 1024;
put(l, "jvm,.memory.free", runtime.freeMemory() / mb + "MB");
put(l, "jvm.memory.max", runtime.maxMemory() / mb + "MB");
put(l, "jvm.memory.total", runtime.totalMemory() / mb + "MB");
{code}
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