Rony
This is a known problem. I've brought it up before. The problem is that Mac
OS X daemons that are controlled by launchd, are not allowed to daemonize
themselves. Since the current rxapi daemonizes a child process, and then
exits, launchd looses all communication/control of the child process. Launchd
thinks that the daemon has failed and tries to restart it, which then fails
because of the PID file. I coded up a work around similar to the work around
that was put in place for AIX. I was told not to mess with rxapi, that someone
would rewrite it later.
Bruce
On Feb 20, 2011, at 6:19 AM, Rony G. Flatscher wrote:
> Hi there,
>
> while looking at the Console's log entries ("Application - Console") it seems
> that launchd tries restarting the rxapi daemon in 10 second intervals. Is
> this intentional or a potential problem?
>
> This is how the rxapi-daemon gets started (copied from Bruce's script):
> launchctl load -w /Library/LaunchDaemons/org.rexxla.oorexx.rxapid.plist
>
> with the content:
> <?xml version="1.0" encoding="UTF-8"?>
> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN"
> "http://www.apple.com/DTDs/PropertyList-1.0.dtd";>
> <plist version="1.0">
> <dict>
> <key>Disabled</key>
> <false/>
> <key>KeepAlive</key>
> <true/>
> <key>Label</key>
> <string>org.rexxla.oorexx.rxapid</string>
> <key>ProgramArguments</key>
> <array>
> <string>/usr/bin/rxapi</string>
> </array>
> <key>RunAtLoad</key>
> <true/>
> </dict>
> </plist>
>
>
> Here's a sample of log-entries (after a fresh reboot to test whether the
> launchd is indeed processing the rxapi daemon)::
> Feb 20 15:09:44 ronymac com.apple.launchd.peruser.501[173] (filled during
> runtime[331]): posix_spawn("filled during runtime", ...): No such file or
> directory
> Feb 20 15:09:44 ronymac com.apple.launchd.peruser.501[173]
> (de.novamedia.NMDeviceObserver[330]): Exited with exit code: 1
> Feb 20 15:09:44 ronymac com.apple.launchd.peruser.501[173]
> (de.novamedia.NMDeviceObserver): Throttling respawn: Will start in 10 seconds
> Feb 20 15:09:44 ronymac com.apple.launchd.peruser.501[173] (filled during
> runtime[331]): Exited with exit code: 1
> Feb 20 15:09:44 ronymac com.apple.launchd.peruser.501[173] (filled during
> runtime): Throttling respawn: Will start in 10 seconds
> Feb 20 15:09:44 ronymac org.rexxla.oorexx.rxapid[332]: Error: There is
> already a server running.
> Feb 20 15:09:44 ronymac org.rexxla.oorexx.rxapid[332]: Aborting
> execution.
> Feb 20 15:09:44 ronymac com.apple.launchd[1] (org.rexxla.oorexx.rxapid[332]):
> Exited with exit code: 255
> Feb 20 15:09:44 ronymac com.apple.launchd[1] (org.rexxla.oorexx.rxapid):
> Throttling respawn: Will start in 10 seconds
>
> Feb 20 15:09:54 ronymac com.apple.launchd.peruser.501[173]
> (de.novamedia.NMDeviceObserver[333]): posix_spawn("/Applications/web'n'walk
> Manager/web'n'walk
> Manager.app/Contents/MacOS/NMDeviceObserver.app/Contents/MacOS/NMDeviceObserver",
> ...): No such file or directory
> Feb 20 15:09:54 ronymac com.apple.launchd.peruser.501[173] (filled during
> runtime[334]): posix_spawn("filled during runtime", ...): No such file or
> directory
> Feb 20 15:09:54 ronymac com.apple.launchd.peruser.501[173]
> (de.novamedia.NMDeviceObserver[333]): Exited with exit code: 1
> Feb 20 15:09:54 ronymac com.apple.launchd.peruser.501[173]
> (de.novamedia.NMDeviceObserver): Throttling respawn: Will start in 10 seconds
> Feb 20 15:09:54 ronymac com.apple.launchd.peruser.501[173] (filled during
> runtime[334]): Exited with exit code: 1
> Feb 20 15:09:54 ronymac com.apple.launchd.peruser.501[173] (filled during
> runtime): Throttling respawn: Will start in 10 seconds
> Feb 20 15:09:54 ronymac org.rexxla.oorexx.rxapid[335]: Error: There is
> already a server running.
> Feb 20 15:09:54 ronymac org.rexxla.oorexx.rxapid[335]: Aborting
> execution.
> Feb 20 15:09:54 ronymac com.apple.launchd[1] (org.rexxla.oorexx.rxapid[335]):
> Exited with exit code: 255
> Feb 20 15:09:54 ronymac com.apple.launchd[1] (org.rexxla.oorexx.rxapid):
> Throttling respawn: Will start in 10 seconds
>
> Feb 20 15:10:04 ronymac com.apple.launchd.peruser.501[173]
> (de.novamedia.NMDeviceObserver[336]): posix_spawn("/Applications/web'n'walk
> Manager/web'n'walk
> Manager.app/Contents/MacOS/NMDeviceObserver.app/Contents/MacOS/NMDeviceObserver",
> ...): No such file or directory
> Feb 20 15:10:04 ronymac com.apple.launchd.peruser.501[173] (filled during
> runtime[337]): posix_spawn("filled during runtime", ...): No such file or
> directory
> Feb 20 15:10:04 ronymac com.apple.launchd.peruser.501[173]
> (de.novamedia.NMDeviceObserver[336]): Exited with exit code: 1
> Feb 20 15:10:04 ronymac com.apple.launchd.peruser.501[173]
> (de.novamedia.NMDeviceObserver): Throttling respawn: Will start in 10 seconds
> Feb 20 15:10:04 ronymac com.apple.launchd.peruser.501[173] (filled during
> runtime[337]): Exited with exit code: 1
> Feb 20 15:10:04 ronymac com.apple.launchd.peruser.501[173] (filled during
> runtime): Throttling respawn: Will start in 10 seconds
> Feb 20 15:10:04 ronymac org.rexxla.oorexx.rxapid[338]: Error: There is
> already a server running.
> Feb 20 15:10:04 ronymac org.rexxla.oorexx.rxapid[338]: Aborting
> execution.
> Feb 20 15:10:04 ronymac com.apple.launchd[1] (org.rexxla.oorexx.rxapid[338]):
> Exited with exit code: 255
> Feb 20 15:10:04 ronymac com.apple.launchd[1] (org.rexxla.oorexx.rxapid):
> Throttling respawn: Will start in 10 seconds
> ....
>
> There is at least another daemon that gets restarted, other daemons do not
> get restarted, which is the reason for querying whether the observed
> behaviour is o.k. or not.
>
> ---rony
>
> ------------------------------------------------------------------------------
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The ultimate all-in-one performance toolkit: Intel(R) Parallel Studio XE:
Pinpoint memory and threading errors before they happen.
Find and fix more than 250 security defects in the development cycle.
Locate bottlenecks in serial and parallel code that limit performance.
http://p.sf.net/sfu/intel-dev2devfeb
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