# WebSphere 8.5

This page describes the Optimization Pack for the component type WebSphere 8.5.

## Metrics

There are no metrics for this component type.

## Parameters

### InboudChannels

| Parameter                                   | Type    | Unit        | Default | Domain         | Restart | Description                                                                                                                                                         |
| ------------------------------------------- | ------- | ----------- | ------- | -------------- | ------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| was\_tcp\_maxppenconnections\_tcp2          | integer | connections | 20000   | `1` → `128000` | yes     | Maximum number of connections that are available for a server to use (TCP\_2)                                                                                       |
| was\_tcp\_listenBacklog\_tcp2               | integer | connections | 511     | `1` → `1024`   | yes     | Maximum number of outstanding connection requests that the operating system can buffer while it waits for the application server to accept the connections (TCP\_2) |
| was\_tcp\_maxppenconnections\_tcp4          | integer | connections | 20000   | `1` → `128000` | yes     | Maximum number of connections that are available for a server to use (TCP\_4)                                                                                       |
| was\_tcp\_listenBacklog\_tcp4               | integer | connections | 511     | `1` → `1024`   | yes     | Maximum number of outstanding connection requests that the operating system can buffer while it waits for the application server to accept the connections (TCP\_4) |
| was\_http\_maximumPersistentRequests\_http2 | integer | requests    | 10000   | `1` → `20000`  | yes     | Maximum number of persistent requests that are allowed on a single HTTP connection (HTTP\_2)                                                                        |
| was\_http\_maximumPersistentRequests\_http4 | integer | requests    | 10000   | `1` → `20000`  | yes     | Maximum number of persistent requests that are allowed on a single HTTP connection (HTTP\_4)                                                                        |

### Thread Pools

| Parameter                                               | Type    | Unit    | Default | Domain      | Restart | Description                                                                        |
| ------------------------------------------------------- | ------- | ------- | ------- | ----------- | ------- | ---------------------------------------------------------------------------------- |
| was\_threadpools\_minimumSize\_webcontainer             | integer | threads | 50      | `1` → `100` | yes     | Minimum number of threads to allow in the pool (Web Container)                     |
| was\_threadpools\_maximumsize\_webcontainer             | integer | threads | 50      | `1` → `500` | yes     | Maximum number of threads to maintain in the thread pool (Web Container)           |
| was\_threadpools\_minimumSize\_default                  | integer | threads | 20      | `1` → `100` | yes     | Maximum number of threads to maintain in the thread pool (Web Container)           |
| was\_threadpools\_maximumsize\_default                  | integer | threads | 20      | `1` → `500` | yes     | Maximum number of threads to maintain in the default thread pool (default)         |
| was\_threadpools\_minimumSize\_threadpoolmanager\_orb   | integer | threads | 10      | `1` → `100` | yes     | Minimum number of threads to allow in the pool (ThreadPoolManager ORB)             |
| was\_threadpools\_maximumsize\_threadpoolmanager\_orb   | integer | threads | 50      | `1` → `500` | yes     | Maximum number of threads to maintain in the thread pool (ThreadPoolManager ORB)   |
| was\_threadpools\_minimumSize\_objectrequestbroker\_orb | integer | threads | 10      | `1` → `100` | yes     | Minimum number of threads to allow in the pool (ObjectRequestBroker ORB)           |
| was\_threadpools\_maximumsize\_objectrequestbroker\_orb | integer | threads | 50      | `1` → `500` | yes     | Maximum number of threads to maintain in the thread pool (ObjectRequestBroker ORB) |
| was\_threadpools\_minimumSize\_custom\_TCPChannel\_DCS  | integer |         | 20      | `1` → `100` | yes     | Minimum number of threads to allow in the pool (TCPChannel.DCS)                    |
| was\_threadpools\_maximumsize\_custom\_TCPChannel\_DCS  | integer | threads | 100     | `1` → `500` | yes     | Maximum number of threads to maintain in the thread pool (TCPChannel.DCS)          |

### Timeouts

| Parameter                             | Type    | Unit         | Default | Domain        | Restart | Description                                                                |
| ------------------------------------- | ------- | ------------ | ------- | ------------- | ------- | -------------------------------------------------------------------------- |
| was\_auth\_cacheTimeout               | integer | milliseconds | 600     | `0` → `7200`  | yes     | The time period at which the authenticated credential in the cache expires |
| was\_webserverplugin\_serverIOtimeout | integer | milliseconds | 900     | `-1` → `1800` | yes     | How long should the plug-in wait for a response from the application       |

### Others

| Parameter                               | Type        | Unit | Default | Domain          | Restart | Description                                                                                                                                                                                                                           |
| --------------------------------------- | ----------- | ---- | ------- | --------------- | ------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| was\_Server\_provisionComponents        | categorical |      | `false` | `true`, `false` | yes     | Select this property if you want the server components started as they are needed by an application that is running on this server                                                                                                    |
| was\_ObjectRequestBroker\_noLocalCopies | categorical |      | `false` | `true`, `false` | yes     | Specifies how the ORB passes parameters. If enabled, the ORB passes parameters by reference instead of by value, to avoid making an object copy. If disabled, a copy of the parameter passes rather than the parameter object itself. |
| was\_PMIService\_statisticSet           | categorical |      | `basic` | `true`, `false` | yes     | When PMI service is enabled, the monitoring of individual components can be enabled or disabled dynamically. PMI provides four predefined statistic sets that can be used to enable a set of statistics                               |