z/OS Communications Server: IP Messages Volume 4 (EZZ, SNM)
Previous topic | Next topic | Contents | Contact z/OS | Library | PDF


EZZ6088I

z/OS Communications Server: IP Messages Volume 4 (EZZ, SNM)
SC27-3657-01

EZZ6088I
jobname XCF STATS DISPLAY

Explanation

As a result of a D TCPIP,jobname,XCF,STATS command a table of statistics for the administration connections that are used between the Telnet LU name requestor (LUNR) and the Telnet LU name server (LUNS) telnet jobs in a Telnet XCF GROUP is displayed.

Each connection displayed produces three rows in the table. The first row identifies the LUNR by connection. The second row shows the values for the last complete XCF Monitor interval. The third row shows the weighted average of those values over the last ten completed XCF Monitor intervals. Each 3-digit table value represents either an amount of time or a record count.

Time values can be one of the following:
  • A number ending with U to indicate that the value is expressed in microseconds
  • A number ending with M to indicate that the value is expressed in rounded milliseconds
  • A number ending with S to indicate that the value is expressed in rounded seconds.
Record count values can be one of the following:
  • A number only to indicate that the value is an exact count
  • A number ending with K to indicate that the value is expressed in rounded thousands
  • A number ending with M to indicate that the value is expressed in rounded millions

The table column headers are displayed if the queried telnet job is either an active LUNR or an active LUNS.

If the queried telnet job is an active LUNR, information is displayed for its administration connection to the current LUNS.

If the queried telnet job is an active LUNS, the ====PARTNERS==== separator line is displayed followed by information for the administration connection from each LUNR partner.

The following example shows the format of the EZZ6088I message and its table of statistics:
EZZ6088I TELNET XCF STATISTICS
    INTERVAL: xm            PEND       RECV          SEND 
 NEXT UPDATE: nu     RTT    RCRD    TIME  RCRD    TIME  RCRD 
mvsname  tnname    -----   -----   ----- -----   ----- -----
            LAST:   lrtt    lpndr   lrcvt lrcvr   lsndt lsndr
             AVG:   artt    apndr   arcvt arcvr   asndt asndr
====PARTNERS===== 
mvsname  tnname    -----   -----   ----- -----   ----- -----
            LAST:   lrtt    lpndr   lrcvt lrcvr   lsndt lsndr
             AVG:   artt    apndr   arcvt arcvr   asndt asndr
In the message text:
jobname
The name of the procedure that is used to start the TN3270 server or the job name identifier of the procedure that is used to start the TN3270 server.

If you start the TN3270.TNSRV1 server, the jobname value TNSRV1. If you start the TN3270 server, the jobname value is TN3270

xm
The time interval for statistics calculations. The interval is internally set to 60S.
nu
The number of seconds remaining until the next interval completes and the display values are updated.
mvsname
The name of the MVS™ system on which the Telnet LUNR or LUNS resides.
tnname
The job name of the Telnet LUNR or LUNS.
lrtt
The amount of time the slowest heartbeat record took to complete a round trip in the last interval. The LUNR and the LUNS each send four heartbeat records in each of their respective XCFMONITOR intervals, but no more than one every 15 seconds. The roundtrip time includes the time spent in the Telnet outbound record queue on the sender, in TCP/IP send buffers, in the network, in TCP/IP receive buffers, in the Telnet inbound record queue on the receiver, in the Telnet outbound record queue on the receiver, in TCP/IP send buffers, in the network, in TCP/IP receive buffers, and in the Telnet inbound record queue on the sender.
lpndr
The number of records sent to the partner that are still pending a response at the end of the last interval. This number is typically low, but might show brief spikes when shared LU administration work loads are heavy.
lrcvt
The amount of time spent processing records received over the connection during the last interval. This value should vary proportionately with the number of records received. A very high value with a low number of records might indicate that this Telnet is stalled. The value 0 might indicate a network problem.
lrcvr
The number of records received over the connection during the last interval. This value includes responses to heartbeat records so it should usually be at least 4.
lsndt
The amount of time spent processing records sent out over the connection during the last interval. This value includes time spent waiting for the outbound socket to unblock during writes. A very high value might indicate network congestion or a stalled Telnet partner.
lsndr
The number of records sent over the connection during the last interval. This value includes heartbeat records so it should usually be at least 4.
artt
The weighted average of heartbeat round trip times over the last ten intervals.
apndr
The weighted average of pending records over the last ten intervals.
arcvt
The weighted average of time spent processing records received over the last ten intervals.
arcvr
The weighted average of records received over the last ten intervals.
asndt
The weighted average of time spent processing records sent out over the last ten intervals.
asndr
The weighted average of records sent over the last ten intervals.

System action

Telnet processing continues.

Operator response

No action is needed.

System programmer response

No action is needed.

User response

Not applicable.

Problem determination

Not applicable.

Source

z/OS® Communications Server TCP/IP: TN3270E Telnet Server

Module

EZBTMQXC

Routing code

Not applicable.

Descriptor code

5,8,9

Automation

Not applicable.

Example

EZZ6088I TELNET XCF STATISTICS
    INTERVAL: 60S           PEND       RECV          SEND 
 NEXT UPDATE: 25S    RTT    RCRD    TIME  RCRD    TIME  RCRD 
MVS020   TLUNSR    -----   -----   ----- -----   ----- -----
            LAST:   753U      0     766U    8       1M    7 
             AVG:   715U      0     826U    6       2M    7 
====PARTNERS===== 
MVS020   TLUNR1    -----   -----   ----- -----   ----- ----- 
            LAST:   983U      0       4M    2       3M   27 
             AVG:   981U      0      18M  362       3M   26 
MVS020   TLUNR2    -----   -----   ----- -----   ----- ----- 
            LAST:   910U      0     829U    8       1M    7 
             AVG:   904U      0      15M  343       1M    7 
MVS020   TLUNSR    -----   -----   ----- -----   ----- ----- 
            LAST:   688U      0     639U    7       1M    6 
             AVG:   988U      0       1M    9       1M    7 
17 OF 17 RECORDS DISPLAYED

Go to the previous page Go to the next page




Copyright IBM Corporation 1990, 2014