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https://issues.apache.org/jira/browse/HTTPCORE-390?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14128597#comment-14128597
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ASF GitHub Bot commented on HTTPCORE-390:
-----------------------------------------
GitHub user srouthiau opened a pull request:
https://github.com/apache/httpcore/pull/3
Trunk
https://issues.apache.org/jira/browse/HTTPCORE-390
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/srouthiau/httpcore trunk
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/httpcore/pull/3.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #3
----
commit b998fe991e97e1ccef208350dbbca6c2a751359c
Author: srouthiau <[email protected]>
Date: 2014-09-10T15:24:19Z
Update AbstractNIOConnPool.java
commit 81c740937be7fb95cc42b195c15c6a185d5937ec
Author: srouthiau <[email protected]>
Date: 2014-09-10T15:25:00Z
Update RouteSpecificPool.java
commit dc8ebf14b0b21311ac2005a2e53de155439784a1
Author: srouthiau <[email protected]>
Date: 2014-09-10T15:26:11Z
Update SessionRequestCallback.java
commit 3895133eb24e585b80a8145c15aeb04e1ba74e07
Author: srouthiau <[email protected]>
Date: 2014-09-10T15:27:04Z
Update DefaultConnectingIOReactor.java
----
> 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
> Labels: concurrency, performance
> Attachments: AbstractNIOConnPool.java,
> DefaultConnectingIOReactor.java, RouteSpecificPool.java,
> SessionRequestCallback.java, contention on lease and release.png,
> patch-performance nio pool.patch
>
>
> 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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