07-03-2011
Weblogic Queue Lenth
I a performance monitoring tool that monitors the performance of my servers. I get an alert message every 5 minutes from
the monitoring tool if the queue count increase. The monitor sends an email of NOT-OK when the queue count increases and
another email of OK when the queue count goes to 0 again.
Lately, we have been seeing some NOT-OK alerts for the queue count increasing. It goes back down before the next monitor runs.
I am trying to investigate the reasons for the spikes. I believe that Garbage collection is causing the the queue count to go up.
I looked at a couple of emails from last month where the queue count was more than zero and pulled the data into an excel file.
I highlighted the records where the queue count is increasing. I am trying to determine what is causing the queue to go up.
It could be GC's are performing, it couldn't be user activity, it couldn't thread utilization. I would really appreciate your help in this matter.
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LEARN ABOUT OSX
chudremotectrl
CHUDREMOTECTRL(1) General Commands Manual CHUDREMOTECTRL(1)
NAME
chudRemoteCtrl - start or stop the collection of performance monitor data in a performance monitor remote server application.
SYNOPSIS
chudRemoteCtrl [ -m ] [ executable [args... ] ]
chudRemoteCtrl -s label
chudRemoteCtrl -e
chudRemoteCtrl -k PID
DESCRIPTION
chudRemoteCtrl is a command line tool that allows for the collection of performance data by any active performance monitor remote server
application. There are currently two CHUD Tools that can be put in remote performance monitor server mode: MONster, and Shark (as well as
their command line counterparts). Typically, chudRemoteCtrl is invoked on the command line or in a shell script, followed by the path to an
executable to be measured and its arguments. chudRemoteCtrl issues a chudStartRemotePerfMonitor message immediately after launching the
specified target program. When the launched program terminates, chudRemoteCtrl issues a chudStopRemotePerfMonitor message, and then exits.
When the '-s', '-e' or '-k PID' options are used, no program is launched.
OPTIONS
-r seconds: If the 'chudStartRemotePerfMonitor' message fails to either acquire or start the remote monitoring service, then keep try-
ing to start again, until the specified number of seconds has elapsed. The same thing is true of the '-e' option. If there is a '-r
<seconds>' argument on the command line, and a failure occurs trying to stop the remote profiling program, the stop message will be
sent again until the retry time limit is reached.
-s label: Issue a chudStartRemotePerfMonitor message with the specified label and exit. A 'label' is a string of up to 32 characters.
-e Issue a chudStopRemotePerfMonitor message and exit.
-q silence some of the non-essential warning and error output.
-kPID Send a UNIX signal (SIGUSR1 to start profiling, SIGUSR2 to stop profiling) to the specified process-id. For example, if a command-
line profiling tool, is running as PID 4267, using '-k 4267' along with a '-s' will send a SIGUSR1 to the command-line profiling
tool and it will start sampling, while '-k 4267' along with a '-e' will send a SIGUSR2 to the command-line profiling tool and it
will stop sampling. A 'start' example: % chudRemoteCtrl -s session_42 -k 4267. And a 'stop' example: % chudRemoteCtrl -e -k 4267.
The command-line CHUD tool 'shark' responds to UNIX signals and toggles performance profiling. You can repeatedly send '-s <label>
-k <PID#>' to shark and it will toggle profiling start or stop. Sending '-e -k <PID#>' to shark will stop sampling (if it's run-
ning) and cause shark to EXIT.
-m Set the performance monitor mark bit in the main thread of the launched child process.
DIAGNOSTICS
chudRemoteCtrl returns a zero (0) upon success and a non-zero value on failure.
BUGS
Please send your comments, suggestions and bug reports to: perftools-feedback@group.apple.com
SEE ALSO
monster(1), shark(1)
CHUD
6 October 2003 CHUDREMOTECTRL(1)