Jose Antonio created CXF-9028:
---------------------------------
Summary: CXF produces thread pinning when using virtual threads
Key: CXF-9028
URL: https://issues.apache.org/jira/browse/CXF-9028
Project: CXF
Issue Type: Bug
Reporter: Jose Antonio
Attachments: image-2024-06-11-13-14-36-151.png,
image-2024-06-11-13-15-39-139.png
When using virtual threads, it's important to avoid the use of synchronized
objects and methods because I/O operations executed in them will pin the
virtual thread to its carrier thread, blocking the carrier thread instead of
the virtual one.
Executing some tests with a CXF client in a Tomcat server using virtual threads
I see that, if I spawn a few tens of virtual threads I get a lot of thread
pinning due to the code in
{code:java}
PhaseInterceptorChain{code}
In this class, there's a method that's invoked for all requests
{code:java}
public synchronized boolean doIntercept(Message message){code}
This method pins the virtual thread to the carrier thread for all the duration
of the request and response, which might be a lot of time and it hinders the
multithreaded applications throughput. Just changing the use of synchronized
keywords for ReentrantLocks will solve this issue.
!image-2024-06-11-13-15-39-139.png|width=769,height=357!
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
