Mateo Ramey created KARAF-2552:
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Summary: Running log:tail on admin:console causes full CPU usage.
Key: KARAF-2552
URL: https://issues.apache.org/jira/browse/KARAF-2552
Project: Karaf
Issue Type: Bug
Components: karaf-shell
Affects Versions: 2.3.3
Environment: Mac OS X on java version "1.7.0_45" and java version
"1.6.0_65"
Windows 7 on java version "1.6.0_41"
Reporter: Mateo Ramey
Running log:tail on the admin console causes 100% cpu usage. There were no logs
being shown during the tail, just simply running the tail is causing the CPU to
spike up.
Steps to reproduce:
1) Download Karaf 2.3.3 distribution.
2) Start karaf
3) run log:tail command
4) Watch CPU monitor (top in *nix or task manager in windows) show full cpu
usage
5) ctrl-c out of log:tail and CPU usage goes back to idle.
Attaching a profiler to Karaf identified the method taking up CPU as:
org.apache.karaf.shell.console.jline.DelayedStarted.run()
Not sure if that is fully accurate, but might be a place to start.
Note: Was unable to reproduce issue on Karaf 2.3.2 and as a result we have had
to revert back to that version.
Let me know if you have any additional questions.
Thanks!
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