https://bz.apache.org/bugzilla/show_bug.cgi?id=58766

--- Comment #2 from Konstantin Kolinko <knst.koli...@gmail.com> ---
Read about annotation scanning in this FAQ article:
https://wiki.apache.org/tomcat/HowTo/FasterStartUp

I agree with Mark that there is not enough evidence here.

Annotation scanning is expected to take notable time, -- as explained in the
above FAQ entry.

Comments:

1) If you can turn on debug logging and are able to provide an evidence that
Tomcat performs the same work over and over, e.g. scans the same set of
classes, this would be a valid issue.

Tomcat uses standard java.util.logging API as provided by Java Runtime. The
Oracle JDK documentation describes how configure it. This configuration is
available for standalone applications as well.

2) A single thread dump does not say whether things change over time. The usual
advice is to take several (3) dumps over time.

https://wiki.apache.org/tomcat/FAQ/Troubleshooting_and_Diagnostics#Common_Troubleshooting_Scenario

3) Current version of Tomcat 8 is 8.0.30.

4) If you need help, ask on the Tomcat users' mailing list,
https://wiki.apache.org/tomcat/FAQ/Tomcat_User

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