Trex Threads Test

How many requests a SAP TREX server can process depends upon the number of threads each service of the SAP TREX server has been configured with. Without adequate threads, the SAP TREX server may not be able to service all requests, thus resulting in delays in request processing, long pending request queues, and degraded TREX performance. To avoid such anomalies, administrators will have to track the usage of threads by the SAP TREX server, proactively detect a probable contention for threads, and accordingly decide whether/not to increase the size of the thread pool. To achieve this, administrators can take the help of the Trex Threads test.

This test indicates the total number of threads each service of the SAP TREX server can spawn, reports the number of threads that are running, idle, suspended etc for each service and thus reveals whether/not the SAP TREX server needs to be configured with more threads to handle its current task load and to shorten the request queue.

Target of the test : A SAP TREX

Agent deploying the test : An internal agent

Outputs of the test : One set of results for each host:service of the target SAP TREX server that is to be monitored

Configurable parameters for the test
  1. TEST PERIOD - How often should the test be executed
  2. Host – The host for which the test is to be configured.
  3. PORT - Specify the port at which the specified HOST listens.
  4. TREX DIRECTORY - Specify the full path to the SAP TREX instance that is to be monitored for e.g., the location can be specified as D:\usr\sap\TRX\TRX01.
  5. TIMEOUT - Specify the duration (in seconds) beyond which this test should time out in the TIMEOUT text box. The default is 120 seconds.
  6. DETAILED DIAGNOSIS - To make diagnosis more efficient and accurate, the eG Enterprise embeds an optional detailed diagnostic capability. With this capability, the eG agents can be configured to run detailed, more elaborate tests as and when specific problems are detected. To enable the detailed diagnosis capability of this test for a particular server, choose the On option. To disable the capability, click on the Off option.

    The option to selectively enable/disable the detailed diagnosis capability will be available only if the following conditions are fulfilled:

    • The eG manager license should allow the detailed diagnosis capability
    • Both the normal and abnormal frequencies configured for the detailed diagnosis measures should not be 0.
Measures made by the test:
Measurement Description Measurement Unit Interpretation

Stat request threads:

Indicates the number of threads that were processing the requests for this service.

Number

If the value of this measure is 0, then the incoming requests to the service will not be processed.

Idle threads:

Indicates the number of threads that were instantiated and were awaiting incoming requests for this service.

Number

 

Inactive threads:

Indicates the number of threads that were inactive for this service.

Number

By comparing the value of this measure across services, you can identify the service on which too many threads are inactive.

Running threads:

Indicates the number of threads that were running and processing the requests for this service.

Number

The detailed diagnosis of this measure lists the caller, called party, user, method details, running duration etc.

Suspended threads:

Indicates the number of threads that were suspended for this service.

Number

 

Sleeping threads:

Indicates the number of threads of this service that were sleeping.

Number

 

Other threads:

Indicates the number of threads that were in other states corresponding to this service.

Number

Other states vary based on the service to which the thread belongs to. They could be any of the following states : AssignEvent, attributeengine, connected, ControlSearchCacheEvent, createIndex, executetreequery, fdir, fput, getMemWatchInfo, getSelectedQueues, incrsyncpoints, asxml/indexCellTable, loadhistory, asxml/multiIndexCellTab, optimize, optimize/load, ping, pingstat, __PINGSTAT, pexec, preloadIndex, preloadIndex/load, prepareOptimize, reorg, search, asxml/searchCellTable, searching/lexicon, send, setIndexProperty, setIndexProperty/unload, set_index_property, show, simplestat, splitIndex, storetrees, defineConcatAttribute

Total threads:

Indicates the total number of threads allocated for this service.

Number