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NAME

       qping - check application status of Sun Grid Engine daemons.

SYNTAX

       qping [-help] [-noalias] [-ssl|-tcp] [ [ [-i <interval>] [-info] [-f] ] | [ [-dump_tag tag
       [param] ] [-dump] [-nonewline] ] ] <host> <port> <name> <id>

DESCRIPTION

       Qping is used to validate the runtime status of a Sun  Grid  Engine  service  daemon.  The
       current  Sun Grid Engine implementation allows one to query the SGE_QMASTER daemon and any
       running SGE_EXECD daemon. The qping command is used to  send  a  SIM  (Status  Information
       Message)  to  the destination daemon. The communication layer of the specified daemon will
       respond  with  a  SIRM  (Status  Information  Response  Message)  which  contains   status
       information about the consulted daemon.

       The   qping  -dump  and  -dump_tag  options  allowing  an  administrator  to  observe  the
       communication protocol data flow of a Sun Grid Engine  service  daemon.  The  qping  -dump
       instruction  must  be  started  with  root account and on the same host where the observed
       daemon is running.

OPTIONS

   -f
       Show full status information on each ping interval.

       First output Line: The first output line shows the date and time of the request.

       SIRM version: Internal version number of the SIRM (Status Information Response Message)

       SIRM message id: Current message id for this connection

       start time: Start time of daemon. The format is as follows:

       MM/DD/YYYY HH:MM:SS (seconds since 01.01.1970)

       run time [s]: Run time in seconds since start time

       messages in read buffer: Nr. of buffered messages in communication  buffer.  The  messages
       are  buffered for the application (daemon). When this number grows too large the daemon is
       not able to handle all messages sent to it.

       messages in write buffer: Nr. of buffered messages in the communication write buffer.  The
       messages  are  sent  from  the  application  (daemon)  to  the  connected clients, but the
       communication layer wasn't able to send the messages yet. If this number grows too  large,
       the  communication layer isn't able to send them as fast as the application (daemon) wants
       the messages to be sent.

       nr. of connected clients: This is the number of actual connected clients to  this  daemon.
       This also implies the current qping connection.

       status:  The status value of the daemon. This value depends on the application which reply
       to the qping request.  If the application does not provide any information the  status  is
       99999.  Here are the possible status information values for the Sun Grid Engine daemons:

          qmaster:

             0 There is no unusual timing situation.

             1 One or more threads has reached warning timeout. This may happen when at least one
             thread does not increment his time stamp for a  not  usual  long  time.  A  possible
             reason for this is a high workload for this thread.

             2  One  or more threads has reached error timeout. This may happen when at least one
             thread has not incremented his time stamp for longer than 10 minutes.

             3 The time measurement is not initialized.

          execd:

             0 There is no unusual timing situation.

             1 Dispatcher has reached warning timeout. This may happen when the  dispatcher  does
             not  increment his time stamp for a unusual long time. A possible reason for this is
             a high workload.

             2 Dispatcher has reached error timeout. This may happen when the dispatcher has  not
             incremented his time stamp for longer than 10 minutes.

             3 The time measurement is not initialized.

       info:  Status  message of the daemon. This value depends on the application which reply to
       the qping request.  If the application does not provide any information the  info  message
       is  "not  available".   Here  are  the possible status information values for the Sun Grid
       Engine daemons:

          qmaster:

             The info message contains information about the qmaster threads followed by a thread
             state  and  time  information.  Each time when one of the known threads pass through
             their main loop the time information is updated. Since the qmaster has  two  message
             threads  every  message  thread  updates  the  time.  This means the timeout for the
             message thread (MT) can only occur when no message thread is active anymore:

                THREAD_NAME: THREAD_STATE (THREAD_TIME)

                THREAD_NAME:
                   MAIN: Main thread
                   signaler: Signal thread
                   event_master: Event master thread
                   timer: Timer thread
                   worker: Worker thread
                   listener: Listener thread
                   scheduler: Scheduler thread
                   jvm: Java thread

                   The thread names above will be followed by a 3 digit number.

                THREAD_STATE:
                   R: Running
                   W: Warning
                   E: Error

                THREAD_TIME:
                   Time since last timestamp updating.

             After the dispatcher information follows  an  additional  information  string  which
             describes the complete application status.

          execd:

             The info message contains information for the execd job dispatcher:
                dispatcher: STATE (TIME)

             STATE:
                R: Running
                W: Warning
                E: Error

             TIME:
                Time since last timestamp updating.

          After  the  thread information follows an additional information string which describes
          the application status.

    Monitor: If available, displays statistics on a thread. The data for each thread is displayed
    in  one  line. The format of this line can be changed at any time. Only the master implements
    the monitoring.

   -help
       Prints a list of all options.

   -i interval
       Set qping interval time.

       The default interval time is one  second.  Qping  will  send  a  SIM  (Status  Information
       Message) on each interval time.

   -info
       Show  full  status  information  (see  -f for more information) and exit. The exit value 0
       indicates no error. On errors qping returns with 1.

   -noalias
       Ignore host_aliases file, which is located at  <sge_root>/<cell>/common/host_aliases.   If
       this option is used it is not necessary to set any Sun Grid Engine environment variable.

   -ssl
       This  option  can be used to specify an SSL (Secure Socket Layer) configuration. The qping
       will use the configuration to connect to services running SSL. If the SGE settings file is
       not  sourced,  you  have  to  use  the -noalias option to bypass the need for the SGE_ROOT
       environment variable.  The following  environment  variables  are  used  to  specify  your
       certificates:
         SSL_CA_CERT_FILE - CA certificate file
         SSL_CERT_FILE    - certificates file
         SSL_KEY_FILE     - key file
         SSL_RAND_FILE    - rand file

   -tcp
       This option is used to select TCP/IP as the protocol used to connect to other services.

   -nonewline
       Dump  output  will  not  have  a  linebreak  within  a message and binary messages are not
       unpacked.

   -dump
       This option allows an administrator to observe the communication protocol data flow  of  a
       Sun Grid Engine service daemon. The qping -dump instruction must be started as root and on
       the same host where the observed daemon is running.

       The output is written to stdout. The environment variable "SGE_QPING_OUTPUT_FORMAT" can be
       set  to  hide  columns, set a default column width or to set a hostname output format. The
       value of the environment  variable  can  be  set  to  any  combination  of  the  following
       specifiers separated by a space character:
              "h:X"   -> hide column X
              "s:X"   -> show column X
              "w:X:Y" -> set width of column X to Y
              "hn:X"  -> set hostname output parameter X.
                         X values are "long" or "short"

       Start qping -help to see which columns are available.

   -dump_tag tag [param]
       This  option  has  the same the same meaning as -dump, but can provide more information by
       specifying the debug level and message types qping should print:
          -dump_tag ALL <debug level>
             This option shows all possible debug messages (APP+MSG) for the debug levels, ERROR,
             WARNING,  INFO,  DEBUG  and DPRINTF. The contacted service must support this kind of
             debugging.  This option is not currently implemented.
          -dump_tag APP <debug level>
             This option shows only application debug  messages  for  the  debug  levels,  ERROR,
             WARNING,  INFO,  DEBUG  and DPRINTF. The contacted service must support this kind of
             debugging.  This option is not currently implemented.
          -dump_tag MSG
             This option has the same behavior as the -dump option.

   host
       Host where daemon is running.

   port
       Port which daemon has bound (used sge_qmaster/sge_execd port number).

   name
       Name of communication endpoint ("qmaster" or  "execd").  A  communication  endpoint  is  a
       triplet of hostname/endpoint name/endpoint id (e.g. hostA/qmaster/1 or subhost/qstat/4).

   id
       Id of communication endpoint ("1" for daemons)

EXAMPLES

       >qping master_host 31116 qmaster
       08/24/2004 16:41:15 endpoint master_host/qmaster/1 at port 31116 is up since 365761 seconds
       08/24/2004 16:41:16 endpoint master_host/qmaster/1 at port 31116 is up since 365762 seconds
       08/24/2004 16:41:17 endpoint master_host/qmaster/1 at port 31116 is up since 365763 seconds

       > qping -info master_host 31116 qmaster 1
       08/24/2004 16:42:47:
       SIRM version:             0.1
       SIRM message id:          1
       start time:               08/20/2004 11:05:14 (1092992714)
       run time [s]:             365853
       messages in read buffer:  0
       messages in write buffer: 0
       nr. of connected clients: 4
       status:                   0
       info:                     ok

       > qping -info execd_host 31117 execd 1
       08/24/2004 16:43:45:
       SIRM version:             0.1
       SIRM message id:          1
       start time:               08/20/2004 11:06:13 (1092992773)
       run time [s]:             365852
       messages in read buffer:  0
       messages in write buffer: 0
       nr. of connected clients: 2
       status:                   0
       info:                     ok

ENVIRONMENTAL VARIABLES

       SGE_ROOT       Specifies the location of the Sun Grid Engine standard configuration files.

       SGE_CELL       If set, specifies the default Sun Grid Engine cell.

SEE ALSO

       sge_intro(1), host_aliases(5), sge_qmaster(8), sge_execd(8).

COPYRIGHT

       See sge_intro(1) for a full statement of rights and permissions.