(ZOS) SMF Subtype 7: WebContainer activity record (v2)
The purpose of the WebContainer activity SMF record is to record activity within a WebContainer running inside a WAS for z/OS transaction server.
The web container is deployed within an EJB and runs within the EJB container. The WebContainer acts as a web server handling HTTP sessions and servlets. The EJB container is not aware of the work the WebContainer does. Instead, the EJB container only records that the EJB has been dispatched. Meanwhile, the WebContainer gathers the detailed information, such as HTTP sessions, servlets, and their respective performance data. A single WebContainer Activity record is created for each activity that is run within a web container.
WebContainer SMF recording is activated and deactivated along with the activation and deactivation of SMF recording for the J2EE container.
WebContainer activity record (v2) schema
This section includes Subtype 7: WebContainer activity record (Version 2).
WebContainer activity section
.
| Offset (decimal) | Offset (hexadecimal) | Name | Length | Format | Description |
|---|---|---|---|---|---|
| 0 | 0 | SM120WAA | 64 | EBCDIC | The WebSpheretransaction server host name. |
| 64 | 40 | SM120WAB | 8 | EBCDIC | The WebSpheretransaction server name. |
| 72 | 48 | SM120WAC | 8 | EBCDIC | The WebSpheretransaction server instance name. |
| 80 | 50 | SM120WAD | 8 | HEX | The WLM enclave token. |
| 88 | 58 | SM120WAE | 20 | HEX | The identity of the activity. |
| 108 | 6C | SM120WAF | 16 | S390STCK | The time the activity began in the server. |
| 124 | 7C | SM120WAG | 16 | S390STCK | The time the activity ended. |
| 140 | 8C | SM120CL4 | 8 | EBCDIC | Cell |
| 148 | 94 | SM120ND4 | 8 | EBCDIC | Node |
HttpSessionManager section
| Offset | Offset | Name | Length | Format | Description |
|---|---|---|---|---|---|
| 0 | 0 | SM120WAH | 4 | binary | "created Sessions": Number of http sessions that were created. |
| 4 | 4 | SM120WAI | 4 | binary | "invalidatedSessions": Number of http session that were invalidated. |
| 8 | 8 | SM120WAJ | 4 | binary | "activeSessions": Number of http sessions that were referenced during this activity. |
| 12 | C | SM120WAK | 4 | binary | "sessionLifeTime": lifetime of the session in milliseconds. If "invalidatedSessions" > 0, this is the average lifetime (in milliseconds) of the invalidated http session. |
WebApplication section
| Offset | Offset | Name | Length | Format | Description |
|---|---|---|---|---|---|
| 0 | 0 | SM120WAL | 256 | Unicode | The name of the WebApplication. |
| 256 | 100 | SM120WAM | 4 | binary | Number of servlet triplets in this web application section. |
| The following triplet appears 0-n times, once for each servlet section. | |||||
| 260 | 104 | SM120WAN | 4 | binary | Offset to servlet section from the beginning of this WebApplication section. |
| 264 | 108 | SM120WAO | 4 | binary | Length of servlet section. |
| 268 | 10C | SM120WAP | 4 | binary | Number of servlet sections. |
Servlet activity section
| Offset | Offset | Name | Length | Format | Description |
|---|---|---|---|---|---|
| 0 | 0 | SM120WAQ | 256 | Unicode | The name of the servlet. |
| 256 | 100 | SM120WAR | 4 | binary | "responseTime": Response time in milliseconds. |
| 260 | 104 | SM120WAS | 4 | binary | "numErrors": The number of errors that were encountered during the servlet execution. |
| 264 | 108 | SM120WAT | 4 | binary | "loaded":
0: The servlet did not have to be loaded as a result of this request. 1: The servlet had to be loaded as the result of this request. |
| 268 | 10C | SM120WAU | 16 | EBCDIC | "loadedSince":
Timestamp from System.currentTimeMillis() when the servlet was loaded,
in HEX format.
Sample: The data as it appears in the record has the format: e7ef7c577cThis format needs to be converted to a Java long: 996155348860The Java long digits can be converted to java.util.Date: Thu Jul 26 15:49:08 GMT+02:00 2001 |
| 284 | 11C | SM120CPU | 8 | binary | Cpu time in microseconds. |
MVS System Management Facilities (SMF)