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Posted to dev@tomcat.apache.org by bu...@apache.org on 2020/06/16 13:02:17 UTC

[Bug 64527] New: JarWarResourceSet gc caused class loading slowly

https://bz.apache.org/bugzilla/show_bug.cgi?id=64527

            Bug ID: 64527
           Summary: JarWarResourceSet gc caused class loading slowly
           Product: Tomcat 8
           Version: 8.5.39
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Catalina
          Assignee: dev@tomcat.apache.org
          Reporter: springqiang@gmail.com
  Target Milestone: ----

Hi,
I have a spring boot application with embed tomcat, when i deploy my
application(a war package with 329 jar and 227Mb size) to servers, when i first
loading a class by Class.forName, it take several seconds.

I debug some tomcat source code, finally i noticed that when i load a class not
loaded before, it will always run into getArchiveEntries, it will check
archiveEntries is null and load from war file. And i also noticed in
JarWarResourceSet gc method will periodic execution set
archiveEntries=null.Caused class load slowly when archiveEntries=null, because
it will scan all of my war package resources to build a cache.

I'm override JarWarResourceSet let gc method do nothing, it fixed my problem.

But I don’t know if I’m right, so I’m asking here.

tomcat version: 8.5.39
spring boot version: 2.0.9.RELEASE

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[Bug 64527] JarWarResourceSet gc caused class loading slowly

Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=64527

Mark Thomas <ma...@apache.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |INVALID
             Status|NEW                         |RESOLVED

--- Comment #1 from Mark Thomas <ma...@apache.org> ---
Bugzilla is not a support forum. Please direct your question to the Apache
Tomcat users mailing list.

http://tomcat.apache.org/lists.html

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[Bug 64527] JarWarResourceSet gc caused class loading slowly

Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=64527

aix3 <sp...@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |springqiang@gmail.com

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