Bug 58189 - 7.0.59 (APR1.5.0) Suddenly increase busy threads (and high cpu usage).
Summary: 7.0.59 (APR1.5.0) Suddenly increase busy threads (and high cpu usage).
Status: NEW
Alias: None
Product: APR
Classification: Unclassified
Component: APR (show other bugs)
Version: 1.5.0
Hardware: HP Linux
: P2 critical (vote)
Target Milestone: ---
Assignee: Apache Portable Runtime bugs mailinglist
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2015-07-29 04:57 UTC by tsuruoka.koichi
Modified: 2015-07-29 04:57 UTC (History)
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Description tsuruoka.koichi 2015-07-29 04:57:21 UTC 
Hello,

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.