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https://issues.apache.org/jira/browse/DAEMON-186?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mladen Turk updated DAEMON-186:
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Affects Version/s: 1.0.5
> jsvc consumes 100% CPU when redirecting errfile (and not outfile) to syslog
> ---------------------------------------------------------------------------
>
> Key: DAEMON-186
> URL: https://issues.apache.org/jira/browse/DAEMON-186
> Project: Commons Daemon
> Issue Type: Bug
> Components: Jsvc
> Affects Versions: 1.0.1, 1.0.2, 1.0.4, 1.0.5
> Environment: Ubuntu
> Reporter: Ana Solano Ros
> Assignee: Mladen Turk
> Priority: Minor
>
> When you run jsvc redirecting -errfile to syslog but not -outfile to syslog
> the jsvc process in charge of the redirection to syslog daemon consumes 100%
> CPU.
> The problem dissapears when redirecting both (-errfile and -outfile) to
> syslog.
> The problem appears when only one is redirected to syslog and the other
> parameter is not specified or redirected to a file.
> The problem in the process appears to be the following:
> - jsvc tries to open 2 file descriptors, one for the standard output and one
> for the error output, and listen to both file descriptors
> - when it receives a message from one of both descriptors it sends the
> message to syslog daemon.
> - In the case that only -errfile is specified (and not -outfile), when jsvc
> tries to open the stardard output file descriptor it fails and the file
> descriptor points to "0" (default value, /dev/null).
> - The jsvc listen to both descriptors, the error output (that was correctly
> opened) and the 0 file descriptor, and jsvc is receiving data continously
> from this "broken" file descriptor. So it enters in a loop that consumes 100%
> of CPU.
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