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Posted to dev@hc.apache.org by "Oleg Kalnichevski (Jira)" <ji...@apache.org> on 2022/07/26 13:25:00 UTC
[jira] [Resolved] (HTTPCORE-721) High CPU usage observed when the server closes the connection after responding with the Keep-alive header to a load test with large payload.
[ https://issues.apache.org/jira/browse/HTTPCORE-721?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Oleg Kalnichevski resolved HTTPCORE-721.
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Resolution: Cannot Reproduce
[~sajiniekavindya] I cannot reproduce. Please re-test with the latest 4.4.16-SNAPSHOT.
Oleg
> High CPU usage observed when the server closes the connection after responding with the Keep-alive header to a load test with large payload.
> ---------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: HTTPCORE-721
> URL: https://issues.apache.org/jira/browse/HTTPCORE-721
> Project: HttpComponents HttpCore
> Issue Type: Bug
> Components: HttpCore NIO
> Affects Versions: 4.4.15
> Environment: JDK 8_261 and above
> Reporter: Sajinie Kavindya
> Priority: Major
> Attachments: HTTPClient.jmx, HttpCoreNIOTestServer.zip
>
>
> Hi,
> In HTTPCoreNIO {*}4.4.15{*}, for JDK 8_261 and above, we can observe a high CPU usage for the following scenario.
> * Client behavior: sends POST/PUT requests with a payload greater than the buffer size. Should be a load test at least with two requests.
> * Server behavior: responds with the Connection: keep-alive header and immediately closes the connection using the connection close method.
> Please note that for JDK version < JDK 8_261, this is not reproducible. In order to reproduce the issue, I have written a test server and a JMeter script to act as a client.
> Reproducible steps:
> # *TestServer.java* - Run this main class, which starts the server on port 8253. (I have only changed the “{_}completeResponse{_}” method to close the connection at line #753).
> # *HTTPClient.jmx* - Start this JMeter script, which sends two POST requests to the server with a large payload.
> Please let us know the validity of this scenario. For now, I am creating this as a Bug as high CPU usage is observed.
> Thanks & Regards,
> Sajinie
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