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SMF Type 119 Record - Subtype 10

This table shows the record layout for type 119 SMF records
(TCP/IP Statistics - UDP Socket Close Record).

List of other SMF record layouts available.
List of sample SMF reports.

Purpose: Transmission Control Protocol/Internet Protocol (TCP/IP) writes type 119 records to collect statistics about Telnet servers and clients, FTP servers and clients, and API activity and stack usage information.

The Subtype 10 UDP socket close record is collected whenever a UDP socket is closed (note that this is not collected for individual datagrams sent using the sendto API call). This record contains pertinent information about the socket, such as timestamps for its opening and closing, and bytes flowing through the socket.

Guidelines:

  • The socket's partner information is contained in this record; however, this only documents the partner at the time of socket close. Hence, this information would be more meaningful for a client UDP application than a server UDP application.
  • Because this record is generated for every single UDP socket, this can generate significant load on a server and rapidly fill the SMF data sets. Care should be exercised in its use.
  • The local IP address is 0.0.0.0 unless the application explicitly binds to a local IP address on this socket.

It's easy to report on SMF 119 data! (Jump to sample reports)

SMF Spectrum Writer
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Spectrum SMF Writer handles the difficult SMF record parsing for you automatically. You just specify which fields you want to see.

Spectrum SMF Writer also converts the arcane date and time fields and reformats them into an attractive report.

Plus, Spectrum SMF Writer can export SMF data as comma delimited files to use on your PC.
 
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SMF Type 119 Record -- TCP/IP Statistics - UDP Socket Close Record
Offset
(Dec.)
Offset
(Hex)
NameLengthFormatDescription
00SMF119LEN2binary
Record length. This field and the next field (total of four bytes) form the RDW (record descriptor word). See “Standard SMF Record Header” on page 13-1 for a detailed description.
22SMF119SEG2binary
Segment descriptor (see record length field).
44SMF119FLG1binary
System indicator Bit Meaning When Set 0 New record format 1 Subtypes used 2 Reserved. 3-6 Version indicators* 7 System is running in PR/SM mode.*See “Standard SMF Record Header” on page 13-1 for a detailed description.
55SMF119RTY1binary
Record type 119 77 .
66SMF119TME4binary
Time since midnight, in hundredths of a second, that the record was moved into the SMF buffer.
10ASMF119DTE4packed
Date when the record was moved into the SMF buffer, in the form 0cyydddF. See “Standard SMF Record Header” on page 13-1 for a detailed description.
14ESMF119SID4EBCDIC
System identification (from the SMFPRMxx SID parameter).
1812SMF119SSI4EBCDIC
Subsystem identification.
2216SMF119STY2binary
Record subtype.
Self Defining Section
2418SMF119TRN2binary
Number of triplets in this record. A triplet is a set of three SMF fields (offset/length/number values) that defines a section of the record. The offset is the offset from the RDW.
261A--2binary
Reserved.
281CSMF119IDOff4binary
Offset to TCP/IP identification section from RDW.
3220SMF119IDLen2binary
Length of TCP/IP identification section.
3422SMF119IDNum2binary
Number of TCP/IP identification sections.
3624SMF119S1Off4Binary
Offset to first data section
4028SMF119S1Len2Binary
Length of first data section
422ASMF119S1Num2Binary
Number of first data sections
TCP/IP Identification Section

For the UDP socket close record, the TCP/IP Stack identification section indicates UDP as the subcomponent and X'08' (event record) as the record reason.

(Offset from beginning of record: SMF119IDOff)
00SMF119TI_
SYSName
8EBCDIC
System name from SYSNAME in IEASYSxx
88SMF119TI_
SysplexName
8EBCDIC
Sysplex name from SYSPLEX in COUPLExx
1610SMF119TI_
Stack
8EBCDIC
TCP/IP stack name
2418SMF119TI_
ReleaseID
8EBCDIC
z/OS Communications Server TCP/IP release identifier
3220SMF119TI_
Comp
8EBCDIC
TCP/IP subcomponent (right padded with blanks):
FTPC FTP Client
FTPS FTP server
IP IP layer
STACK Entire TCP/IP stack
TCP TCP layer
TN3270C TN3270 Client
TN3270S TN3270 server
UDP UDP layer
4028SMF119TI_
ASName
8EBCDIC
Started task qualifier or address space name of address space that writes this SMF record
4830SMF119TI_
UserID
8EBCDIC
User ID of security context under which this SMF record is written
5638--2EBCDIC
Reserved
583ASMF119TI_
ASID
2Binary
ASID of address space that writes this SMF record
603CSMF119TI_
Reason
1Binary
Reason for writing this SMF record:
X'08' Event record
X'C0' Interval statistics record, more records follow
X'80' Interval statistics record, last record in set
X'60' End-of-statistics record, more records follow
X'20' End-of-statistics record, last record in set
X'50' Shutdown starts record, more records follow
X'10' Shutdown starts record, last record in set
613D--3EBCDIC
Reserved
Subtype 10 - UDP socket close specific section of this SMF record
(Offset from beginning of record: SMF119S1Off)
00SMF119UD_
UCRname
8EBCDIC
UDP socket resource name (address space name of address space that opens this socket)
88SMF119UD_
UCConnID
4Binary
UDP socket resource ID (connection ID)
12CSMF119UD_
UCSubTask
4Binary
Subtask ID. This is the task TCB for the task owning the socket.
1610SMF119UD_
UCOTime
4Binary
Time of day of socket open
2014SMF119UD_
UCODate
4Packed
Date of socket open
2418SMF119UD_
UCCTime
4Binary
Time of day of socket close
281CSMF119UD_
UCCDate
4Packed
Date of socket close
3220SMF119UD_
UCRIP
16Binary
Remote IP of last datagram received on socket
4830SMF119UD_
UCLIP
16Binary
Local IP address at time of socket close
6440SMF119UD_
UCRPort
2Binary
Remote port of last datagram received on socket
6642SMF119UD_
UCLPort
2Binary
Local port number at time of socket close
6844SMF119UD_
UCType
1Binary
UDP Socket Type
x'01': Standard
x'02': Enterprise Extender
6945SMF119UD_
UCReason
1Binary
Reason for socket close
x'01': Normal
x'02': Abnormal: application error or stack termination
7046--2Binary
Reserved
7248SMF119UD_
UCInDgrams
8Binary
Number of inbound UDP datagrams
8050SMF119UD_
UCOutDgrams
8Binary
Number of outbound UDP datagrams
8858SMF119UD_
UCInBytes
8Binary
Number of inbound bytes
9660SMF119UD_
UCOutBytes
8Binary
Number of outbound bytes

The table above is based on the description provided by IBM in its "MVS Systems Management Facilities (SMF)" manual.

Sample Report from SMF 119 Subtype 2 Records
Showing Information about TCP Connections


The sample SMF report below was created with Spectrum SMF Writer, the low-cost 4GL SMF report writer.

In this report, we read as input the SMF file and select just the type 119 subtype 2 TCP Connection Termination records. (See SMF 119 Subtype 2 record layout.) The report shows information about terminated TCP connections, including start time, end time and computed elapsed time. It also shows the total number of bytes sent and received during the connection and the termination code. Our record layout also expands the 1-byte termination code into a readable descriptive text. The report is grouped by TCP/IP Stack and Resource. The report includes subtotals for each Resource.

All of this with just a few lines of code!
Why not install a Spectrum SMF Writer trial right now and start making your own SMF reports!

These Spectrum SMF Writer Statements:


INPUT:  SMF119 LIST(YES)

INCLUDEIF: SMF119RTY=119 AND SMF119STY=2

COMPUTE: MY_DURATION(2) = #MAKETIME(
               ((#MAKENUM(SMF119AP_TTEDATE) * 86400)
                  + #MAKENUM(SMF119AP_TTETIME))
             - ((#MAKENUM(SMF119AP_TTSDATE) * 86400)
                  + #MAKENUM(SMF119AP_TTSTIME))
                                   )

TITLE: 'Z/OS TCP DAILY CONNECTIONS REPORT'
TITLE: 'SYSTEM:' SMF119TI_SYSNAME
       'SYSPLEX:' SMF119TI_SYSPLEXNAME
       'STACK:' SMF119TI_STACK
TITLE: 'SORTED BY STACK AND RESOURCE NAME'

COLUMNS: SMF119AP_TTRNAME('RESOURCE')
         SMF119AP_TTSDATE('DATE/STARTED')
         SMF119AP_TTSTIME('TIME/STARTED')
         SMF119AP_TTEDATE('DATE/ENDED')
         SMF119AP_TTETIME('TIME/ENDED')
         MY_DURATION('CONNECTION/DURATION/HH:MM:SS.SS' ACCUM
                     TP'ZZ:ZZ:Z9.99')
         SMF119AP_TTINBYTES('INBOUND/BYTES')
         SMF119AP_TTOUTBYTES('OUTBOUND/BYTES')
         SMF119AP_TTTERMCODE(HEX 'TERM/CODE')
         SMF119AP_TTTERMCODE_DESC('TERM CODE DESC')

SORT:    SMF119TI_STACK
         SMF119AP_TTRNAME
         SMF119AP_TTSDATE
         SMF119AP_TTSTIME

BREAK:   SMF119AP_TTRNAME

 

Produce This SMF Report:


                                              Z/OS TCP DAILY CONNECTIONS REPORT
                                    SYSTEM: ST1      SYSPLEX: SYPROD    STACK: S01QDAS
                                             SORTED BY STACK AND RESOURCE NAME

                                                    CONNECTION
            DATE      TIME       DATE      TIME      DURATION      INBOUND        OUTBOUND    TERM
 RESOURCE STARTED    STARTED    ENDED      ENDED    HH:MM:SS.SS     BYTES          BYTES      CODE     TERM CODE DESC
 ________ ________ ___________ ________ ___________ ___________ ______________ ______________ ____ _______________________

 FTPTA5   03/21/09 14:04:06.81 03/21/09 14:04:07.46        0.65        257,537          3,052  61  CLIENT SENT RESET
 FTPTA5   03/21/09 14:05:35.59 03/21/09 14:05:45.67       10.08         27,043            329  52  APPL ISSUED CLOSE
 FTPTA5   03/21/09 14:12:13.81 03/21/09 14:12:14.51        0.70        257,537          3,052  61  CLIENT SENT RESET
 FTPTA5   03/21/09 14:12:27.35 03/21/09 14:12:37.42       10.07         27,043            329  52  APPL ISSUED CLOSE
 FTPTA5   03/21/09 15:30:34.96 03/21/09 15:30:35.64        0.68        257,537          3,052  61  CLIENT SENT RESET
 FTPTA5   03/21/09 15:35:13.92 03/21/09 15:35:24.00       10.08         27,043            329  52  APPL ISSUED CLOSE
 *** TOTAL FOR FTPTA5   (    6 ITEMS)                     32.26        853,740         10,143
 
 FTPTA6   03/21/09 14:05:38.03 03/21/09 14:05:38.70        0.67        257,537          3,052  61  CLIENT SENT RESET
 FTPTA6   03/21/09 14:07:23.60 03/21/09 14:07:33.68       10.08         27,043            329  52  APPL ISSUED CLOSE
 FTPTA6   03/21/09 14:12:29.83 03/21/09 14:12:30.50        0.67        257,537          3,052  61  CLIENT SENT RESET
 FTPTA6   03/21/09 14:17:10.02 03/21/09 14:17:20.16       10.14         27,043            329  52  APPL ISSUED CLOSE
 FTPTA6   03/21/09 15:35:16.45 03/21/09 15:35:17.21        0.76        257,537          3,052  61  CLIENT SENT RESET
 FTPTA6   03/21/09 15:36:15.10 03/21/09 15:36:25.18       10.08         27,043            329  52  APPL ISSUED CLOSE
 *** TOTAL FOR FTPTA6   (    6 ITEMS)                     32.40        853,740         10,143
 
 FTPTA7   03/21/09 14:07:26.16 03/21/09 14:07:26.86        0.70        257,537          3,052  61  CLIENT SENT RESET
 FTPTA7   03/21/09 14:08:24.36 03/21/09 14:08:34.50       10.14             70            507  52  APPL ISSUED CLOSE
 FTPTA7   03/21/09 14:17:12.60 03/21/09 14:17:13.31        0.71        257,537          3,052  61  CLIENT SENT RESET
 FTPTA7   03/21/09 14:21:40.01 03/21/09 14:21:50.08       10.07         27,043            329  52  APPL ISSUED CLOSE
 FTPTA7   03/21/09 15:36:17.53 03/21/09 15:36:18.17        0.64        257,537          3,052  61  CLIENT SENT RESET
 FTPTA7   03/21/09 15:37:11.45 03/21/09 15:37:21.53       10.08         27,043            329  52  APPL ISSUED CLOSE
 *** TOTAL FOR FTPTA7   (    6 ITEMS)                     32.34        826,767         10,321
 
 FTPTA8   03/21/09 08:09:32.96 03/21/09 15:29:02.41  7:19:29.45        274,763         15,912  52  APPL ISSUED CLOSE
 FTPTA8   03/21/09 13:17:39.42 03/21/09 14:42:50.82  1:25:11.40         47,498          2,291  52  APPL ISSUED CLOSE
 FTPTA8   03/21/09 14:42:57.42 03/21/09 14:43:21.38       23.96         45,921          2,291  52  APPL ISSUED CLOSE
 FTPTA8   03/21/09 14:43:26.45 03/21/09 15:28:27.01    45:00.56         47,498          2,291  52  APPL ISSUED CLOSE
 FTPTA8   03/21/09 14:50:01.00 03/21/09 15:28:26.10    38:25.10         35,513          1,537  52  APPL ISSUED CLOSE
 FTPTA8   03/21/09 14:51:01.03 03/21/09 14:52:28.82     1:27.79         33,273            875  52  APPL ISSUED CLOSE
 FTPTA8   03/21/09 14:53:05.50 03/21/09 15:28:22.53    35:17.03         33,273            875  52  APPL ISSUED CLOSE
 FTPTA8   03/21/09 14:53:51.74 03/21/09 14:55:51.42     1:59.68         35,306          1,537  52  APPL ISSUED CLOSE
 FTPTA8   03/21/09 14:56:05.98 03/21/09 15:11:31.19    15:25.21         33,066            875  52  APPL ISSUED CLOSE
 FTPTA8   03/21/09 15:12:01.80 03/21/09 15:13:30.66     1:28.86         35,266          1,537  52  APPL ISSUED CLOSE
 FTPTA8   03/21/09 15:13:45.48 03/21/09 15:17:09.41     3:23.93         38,223          2,199  52  APPL ISSUED CLOSE
 FTPTA8   03/21/09 15:18:54.59 03/21/09 15:20:07.26     1:12.67         34,273          1,537  52  APPL ISSUED CLOSE
 FTPTA8   03/21/09 15:20:22.01 03/21/09 15:28:20.73     7:58.72         33,118            875  52  APPL ISSUED CLOSE
 *** TOTAL FOR FTPTA8   (   13 ITEMS)               11:16:44.36        726,991         34,632

 
 FTPTA9   03/21/09 14:09:28.52 03/21/09 14:09:29.22        0.70        257,537          3,052  61  CLIENT SENT RESET
 FTPTA9   03/21/09 14:10:24.02 03/21/09 14:10:34.10       10.08         27,043            329  52  APPL ISSUED CLOSE
 FTPTA9   03/21/09 15:01:06.82 03/21/09 15:01:07.46        0.64        257,537          3,052  61  CLIENT SENT RESET
 FTPTA9   03/21/09 15:13:52.13 03/21/09 15:14:02.53       10.40         27,043            329  52  APPL ISSUED CLOSE

 ...

See other sample SMF reports.

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Pacific Systems Group.
All rights reserved.


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