worker thread blocked on HttpOutput Blocker

[dc-orz]

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Jetty version(s)

12.0.14

Java version/vendor (use: java -version) Temurin-23.0.1+11 (build 23.0.1+11)

Description

Hi there, I observed Jetty threads blocked on HttpWriter.write after running a benchmark. My thread dump is shown below:

However, there are only a few active connections (confirmed via ConnectionStatistics metrics):

I configured idleTimeout using httpsConnector.setIdleTimeout(...), but it does not seem to resolve the issue.

[joakime]

Upgrade to Jetty 12.0.21 and try again. There's been many improvements in this area since 12.0.14.

[dc-orz]

Upgrade to Jetty 12.0.21 and try again. There's been many improvements in this area since 12.0.14.

Thanks. Looks good to me. :-) Could you roughly explain the reasons behind it?