Stephane Routhiau created HTTPCORE-390:
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Summary: Performance issue on AbstractNIOConnPool
Key: HTTPCORE-390
URL: https://issues.apache.org/jira/browse/HTTPCORE-390
Project: HttpComponents HttpCore
Issue Type: Improvement
Components: HttpCore NIO
Affects Versions: 4.3.2
Reporter: Stephane Routhiau
AbstractNIOConnPool use a ReentrantLock for lease and release connection.
We have noticed important contention when we try to use hundreds of connexions
to the same host, the lock is to vast.
I managed to rework a part of the code so there is no more use of a
ReentrantLock, but use of ConcurrentHashMap and so on.
The unit tests are ok and the load tests we have made on the patch version are
about 40 % faster under heavy load
Please find attached patch file againt http-nio 4.3.2 and the modified sources
files of http-nio 4.3.2
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