(ZOS) SMF Subtype 3: Server interval record
The purpose of the server interval SMF record is to record activity running inside a WAS for z/OS . This record is produced at regular intervals and is an aggregate of the work that ran inside the server instance during the interval.
A single record is created for each server instance that has interval recording active during the interval. When a server is configured with multiple server instances, each server instance writes a record and the records from all the server instances must be merged by whoever is looking at the SMF records to get a complete view of the work that ran inside the logical server.
We can activate this record through the administrative console by setting server_SMF_server_interval_enabled=1 (or server_SMF_server_interval_enabled=true). We can specify an interval through the administrative console by setting server_SMF_interval_length=n, where n is the desired number of seconds.
Server interval record schema
This section includes Subtype 3: Server interval record.
Server interval section
| Offset (decimal) | Offset (hexadecimal) | Name | Length | Format | Description |
|---|---|---|---|---|---|
| 0 | 0 | SM120HN2 | 64 | EBCDIC | WebSphereApplication Server for z/OStransaction server host name |
| 64 | 40 | SM120SNI | 8 | EBCDIC | WebSphereApplication Server for z/OStransaction server name |
| 72 | 48 | SM120INI | 8 | EBCDIC | WebSphereApplication Server for z/OStransaction server instance name |
| 80 | 50 | SM120SST | 16 | S390STCK | Time that the sample began in the server |
| 96 | 60 | SM120SET | 16 | S390STCK | Time that the sample ended |
| 112 | 70 | SM120NG2 | 4 | binary | Number of global transactions that have run through the server instance during the interval that have been initiated by the server instance during the interval |
| 116 | 74 | SM120NL2 | 4 | binary | Number of local transactions that have been initiated by the server instance during the interval |
| 120 | 78 | SM120NCS | 4 | binary | Reserved |
| 124 | 7C | SM120NCA | 4 | binary | The number of communications sessions that have been active during the interval |
| 128 | 80 | SM120NLS | 4 | binary | Reserved |
| 132 | 84 | SM120NLA | 4 | binary | Number of active local communication sessions that have been attached and active within the server instance during the interval |
| 136 | 88 | SM120NRS | 4 | binary | Reserved |
| 140 | 8C | SM120NRA | 4 | binary | Number of active remote communication sessions that have been attached and active within the server instance during the interval |
| 144 | 90 | SM120BTS | 4 | binary | Number of bytes
that have been transferred to the server from all attached clients
'FFFFFFFF'X indicates the 4-byte field is too small. Use SM120ITS, an 8-byte field, instead. |
| 148 | 94 | SM120BFS | 4 | binary | Number of bytes
that have been sent from the server to all attached clients
'FFFFFFFF'X indicates the 4-byte field is too small. Use SM120IFS, an 8-byte field, instead. |
| 152 | 98 | SM120BTL | 4 | binary | Number of bytes
that have been transferred to the server from all locally attached
clients
'FFFFFFFF'X indicates the 4-byte field is too small. Use SM120ITL, an 8-byte field, instead. |
| 156 | 9C | SM120BFL | 4 | binary | Number of bytes
that have been transferred from the server to all locally attached
clients
'FFFFFFFF'X indicates the 4-byte field is too small. Use SM120IFL, an 8-byte field, instead. |
| 160 | A0 | SM120BTR | 4 | binary | Number of bytes
that have been transferred to the server from all remotely attached
clients
'FFFFFFFF'X indicates the 4-byte field is too small. Use SM120ITR, an 8-byte field, instead. |
| 164 | A4 | SM120BFR | 4 | binary | Number of bytes
that have been transferred from the server to all remotely attached
clients
'FFFFFFFF'X indicates the 4-byte field is too small. Use SM120IFR, an 8-byte field, instead. |
| 168 | A8 | SM120J2 | 4 | binary | J2EE server. |
| 172 | AC | SM120CL1 | 8 | EBCDIC | WebSphereApplication Server for z/OStransaction server cell name |
| 180 | B4 | SM120ND1 | 8 | EBCDIC | WebSphereApplication Server for z/OStransaction server node name |
| 188 | BC | SM120NHS | 4 | binary | Reserved |
| 192 | C0 | SM120NHA | 4 | binary | Number of HTTP communication sessions that have been attached and active within the server instance during the interval |
| 196 | C4 | SM120BTH | 4 | binary | Number of bytes that have been transferred to the server from all
HTTP attached clients
'FFFFFFFF'X indicates the 4-byte field is too small. Use SM120ITH, an 8-byte field, instead. |
| 200 | C8 | SM120BFH | 4 | binary | Number of bytes that have been transferred from the server to all
HTTP attached clients
'FFFFFFFF'X indicates the 4-byte field is too small. Use SM120IFH, an 8-byte field, instead. |
| 204 | CC | SM120TEC | 8 | binary | Total CPU time accumulated by the WLM enclaves. TOD clock format (bit 51 = microseconds). |
| 212 | D4 | SM120ITS | 8 | binary | Number of bytes that have been transferred to the server from all attached clients. |
| 220 | DC | SM120IFS | 8 | binary | Number of bytes that have been sent from the server to all attached clients |
| 228 | E4 | SM120ITL | 8 | binary | Number of bytes that have been transferred to the server from all locally attached clients |
| 236 | EC | SM120IFL | 8 | binary | Number of bytes that have been transferred from the server to all locally attached clients |
| 244 | F4 | SM120ITR | 8 | binary | Number of bytes that have been transferred to the server from all remotely attached clients |
| 252 | FC | SM120IFR | 8 | binary | Number of bytes that have been transferred from the server to all remotely attached clients |
| 260 | 104 | SM120ITH | 8 | binary | Number of bytes that have been transferred to the server from all HTTP attached clients |
| 268 | 10C | SM120IFH | 8 | binary | Number of bytes that have been transferred from the server to all HTTP attached clients |
| 276 | 114 | SM120ITP | 8 | binary | Number of bytes that have been transferred to the server from all SIP attached clients |
| 284 | 11C | SM120IFP | 8 | binary | Number of bytes that have been transferred from the server to all SIP attached clients. |
| 292 | 124 | SM120NPA | 4 | Binary | Number of SIP communication sessions that have been attached and active within the server instance during the interval |
| 296 | 128 | SM120BTP | 4 | binary | Number of bytes that have been transferred to the server from all SIP attached clients. 'FFFFFFFF"X indicates the 4-byte field is too small. Use SM120ITP, an 8-byte field, instead. |
| 300 | 12C | SM120BFP | 4 | binary | Number of bytes that have been transferred from the server to all SIP attached clients. 'FFFFFFFF"X indicates the 4-byte field is too small. Use SM120IFP, an 8-byte field, instead. |
| 304 | 130 | SM120IR1 | 4 | Reserved |
Server servant section
| Offset | Offset | Name | Length | Format | Description |
|---|---|---|---|---|---|
| 0 | 0 | SM120SSA | 4 | binary | Servant address space ID |
| 4 | 4 | SM120SNT | 4 | binary | Number of triplets. |
| The following triplet appears 0-n times; once for each heap id section. | |||||
| 8 | 8 | SM120SSO | 4 | binary | Offset to heap id section from the beginning of this server servant section. |
| 12 | C | SM120SSL | 4 | binary | Length of heap id section. |
| 16 | 10 | SM120SSN | 4 | binary | Number of heap id sections. |
Subtype 3: Heap ID section
| Offset | Offset | Name | Length | Format | Description |
|---|---|---|---|---|---|
| 0 | 0 | SM120HIH | 4 | binary | The heap for which the following data applies. |
| 4 | 4 | SM120HIC | 4 | binary | Number of allocation failures on this heap during the interval. |
| 8 | 8 | SM120HI1 | 8 | binary | Minimum number of bytes during the interval. |
| 16 | 10 | SM120HI2 | 8 | binary | Maximum number of bytes during the interval. |
| 24 | 18 | SM120HI3 | 8 | binary | Average number of bytes during the interval. |
| 32 | 20 | SM120HI4 | 8 | binary | Minimum number of free bytes during the interval. |
| 40 | 28 | SM120HI5 | 8 | binary | Maximum number of free bytes during the interval. |
| 48 | 30 | SM120HI6 | 8 | binary | Average number of free bytes during the interval. |
MVS System Management Facilities (SMF)