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From bugzi...@apache.org
Subject [Bug 58189] New: 7.0.59 (APR1.5.0) Suddenly increase busy threads (and high cpu usage).
Date Wed, 29 Jul 2015 04:57:21 GMT

            Bug ID: 58189
           Summary: 7.0.59 (APR1.5.0) Suddenly increase busy threads (and
                    high cpu usage).
           Product: APR
           Version: 1.5.0
          Hardware: HP
                OS: Linux
            Status: NEW
          Severity: critical
          Priority: P2
         Component: APR
          Assignee: bugs@apr.apache.org
          Reporter: tsuruoka.koichi@simplex.ne.jp


After updating to Tomcat 7.0.59, we observed suddenly increasing busy threads.
(Normally 20threads or so, after updating, over 360threads and kept increasing)

Does anyone know same or similar issue on Tomcat 7.0.59 and APR 1.5.0 (or older
version), or bug fix for that issue on newer version?

Specific changes and configuration are listed below.

Tomcat 7.0.40 -> 7.0.59
TomcatNativeLibrary 1.1.30 -> 1.1.32
APR 1.5.0
Use CometProcessor

Because the system is already running in production environment, we decide to
revert Tomcat version to 7.0.40 for a while, then the issue no longer occurs.
We also have the other similar products using Tomcat 7.0.53 and APR 1.5.0, and
we do not want to reproduce a similar problem.

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