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Appendix A. Reference Material
A.1. Datasource Statistics
| Name | Description |
|---|---|
| ActiveCount | The number of active connections. Each of the connections is either in use by an application or available in the pool. |
| AvailableCount | The number of available connections in the pool. |
| AverageBlockingTime | The average time spent blocking on obtaining an exclusive lock on the pool. This value is in milliseconds. |
| AverageCreationTime | The average time spent creating a connection. This value is in milliseconds. |
| AverageGetTime | The average time spent obtaining a connection. |
| AveragePoolTime | The average time that a connection spent in the pool. |
| AverageUsageTime | The average time spent using a connection. |
| BlockingFailureCount | The number of failures trying to obtain a connection. |
| CreatedCount | The number of connections created. |
| DestroyedCount | The number of connections destroyed. |
| IdleCount | The number of connections that are currently idle. |
| InUseCount | The number of connections currently in use. |
| MaxCreationTime | The maximum time it took to create a connection. This value is in milliseconds. |
| MaxGetTime | The maximum time for obtaining a connection. |
| MaxPoolTime | The maximum time for a connection in the pool. |
| MaxUsageTime | The maximum time using a connection. |
| MaxUsedCount | The maximum number of connections used. |
| MaxWaitCount | The maximum number of requests waiting for a connection at the same time. |
| MaxWaitTime | The maximum time spent waiting for an exclusive lock on the pool. |
| TimedOut | The number of timed out connections. |
| TotalBlockingTime | The total time spent waiting for an exclusive lock on the pool. This value is in milliseconds. |
| TotalCreationTime | The total time spent creating connections. This value is in milliseconds. |
| TotalGetTime | The total time spent obtaining connections. |
| TotalPoolTime | The total time spent by connections in the pool. |
| TotalUsageTime | The total time spent using connections. |
| WaitCount | The number of requests that had to wait to obtain a connection. |
| XACommitAverageTime | The average time for an XAResource commit invocation. |
| XACommitCount | The number of XAResource commit invocations. |
| XACommitMaxTime | The maximum time for an XAResource commit invocation. |
| XACommitTotalTime | The total time for all XAResource commit invocations. |
| XAEndAverageTime | The average time for an XAResource end invocation. |
| XAEndCount | The number of XAResource end invocations. |
| XAEndMaxTime | The maximum time for an XAResource end invocation. |
| XAEndTotalTime | The total time for all XAResource end invocations. |
| XAForgetAverageTime | The average time for an XAResource forget invocation. |
| XAForgetCount | The number of XAResource forget invocations. |
| XAForgetMaxTime | The maximum time for an XAResource forget invocation. |
| XAForgetTotalTime | The total time for all XAResource forget invocations. |
| XAPrepareAverageTime | The average time for an XAResource prepare invocation. |
| XAPrepareCount | The number of XAResource prepare invocations. |
| XAPrepareMaxTime | The maximum time for an XAResource prepare invocation. |
| XAPrepareTotalTime | The total time for all XAResource prepare invocations. |
| XARecoverAverageTime | The average time for an XAResource recover invocation. |
| XARecoverCount | The number of XAResource recover invocations. |
| XARecoverMaxTime | The maximum time for an XAResource recover invocation. |
| XARecoverTotalTime | The total time for all XAResource recover invocations. |
| XARollbackAverageTime | The average time for an XAResource rollback invocation. |
| XARollbackCount | The number of XAResource rollback invocations. |
| XARollbackMaxTime | The maximum time for an XAResource rollback invocation. |
| XARollbackTotalTime | The total time for all XAResource rollback invocations. |
| XAStartAverageTime | The average time for an XAResource start invocation. |
| XAStartCount | The number of XAResource start invocations. |
| XAStartMaxTime | The maximum time for an XAResource start invocation. |
| XAStartTotalTime | The total time for all XAResource start invocations. |
| Name | Description |
|---|---|
| PreparedStatementCacheAccessCount | The number of times that the statement cache was accessed. |
| PreparedStatementCacheAddCount | The number of statements added to the statement cache. |
| PreparedStatementCacheCurrentSize | The number of prepared and callable statements currently cached in the statement cache. |
| PreparedStatementCacheDeleteCount | The number of statements discarded from the cache. |
| PreparedStatementCacheHitCount | The number of times that statements from the cache were used. |
| PreparedStatementCacheMissCount | The number of times that a statement request could not be satisfied with a statement from the cache. |
A.2. Resource Adapter Statistics
| Name | Description |
|---|---|
| ActiveCount | The number of active connections. Each of the connections is either in use by an application or available in the pool |
| AvailableCount | The number of available connections in the pool. |
| AverageBlockingTime | The average time spent blocking on obtaining an exclusive lock on the pool. The value is in milliseconds. |
| AverageCreationTime | The average time spent creating a connection. The value is in milliseconds. |
| CreatedCount | The number of connections created. |
| DestroyedCount | The number of connections destroyed. |
| InUseCount | The number of connections currently in use. |
| MaxCreationTime | The maximum time it took to create a connection. The value is in milliseconds. |
| MaxUsedCount | The maximum number of connections used. |
| MaxWaitCount | The maximum number of requests waiting for a connection at the same time. |
| MaxWaitTime | The maximum time spent waiting for an exclusive lock on the pool. |
| TimedOut | The number of timed out connections. |
| TotalBlockingTime | The total time spent waiting for an exclusive lock on the pool. The value is in milliseconds. |
| TotalCreationTime | The total time spent creating connections. The value is in milliseconds. |
| WaitCount | The number of requests that had to wait for a connection. |
A.3. IO Subsystem Attributes
Attribute names in these tables are listed as they appear in the management model, for example, when using the management CLI. See the schema definition file located at EAP_HOME/docs/schema/wildfly-io_2_0.xsd to view the elements as they appear in the XML, as there may be differences from the management model.
| Attribute | Default | Description |
|---|---|---|
| io-threads | The number of I/O threads to create for the worker. If not specified, the number of threads is set to the number of CPUs × 2. | |
| stack-size | 0 | The stack size, in bytes, to attempt to use for worker threads. |
| task-keepalive | 60000 | The number of milliseconds to keep non-core task threads alive. This attribute should not be used as it is currently ignored. |
| task-max-threads |
The maximum number of threads for the worker task thread pool. If not specified, the maximum number of threads is set to the number of CPUs × 16, taking the |
| Attribute | Default | Description |
|---|---|---|
| buffer-size | The size, in bytes, of each buffer slice. If not specified, the size is set based on the available RAM of your system:
For performance tuning advice on this attribute, see Configuring Buffer Pools in the JBoss EAP Performance Tuning Guide. | |
| buffers-per-slice | How many slices, or sections, to divide the larger buffer into. This can be more memory efficient than allocating many separate buffers. If not specified, the number of slices is set based on the available RAM of your system:
| |
| direct-buffers | Whether the buffer pool uses direct buffers, which are faster in many cases with NIO. Note that some platforms do not support direct buffers. |
Revised on 2018-10-11 12:33:03 UTC
