Alex Rudyy created QPID-7475:
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Summary: [Java Broker] Small persistent messages published with
0-9 protocol consume to much heap space
Key: QPID-7475
URL: https://issues.apache.org/jira/browse/QPID-7475
Project: Qpid
Issue Type: Bug
Components: Java Broker
Affects Versions: qpid-java-6.1
Reporter: Alex Rudyy
With default memory settings (512M of heap and 1.5G of direct memory) Broker
should allow publishing of 508896 messages of size 1000bytes according to [the
formula for estimation of heap
size|http://qpid.apache.org/releases/qpid-java-6.0.4/java-broker/book/Java-Broker-Runtime-Memory.html#Java-Broker-Runtime-Memory-Tuning].
However, in my test with single connection and single queue I only managed to
publish 367301 persistent messages of size 1000bytes . The heap space was fully
occupied and Full GC was running nonstop making broker unusable. I can publish
508896 persistent messages with 0-10 protocol without any issue. We need top
optimize memory consumption by persistent messages on 0-9 path.
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