| Monitoring and Changing Engine States |
|
|
Property | Description |
|
|
peak allocated | the amount of allocated memory remaining after the most recent |
memory | memory reclamation (probably the best measure of active |
| memory utilization) |
|
|
Governor In the case of a governor the following information is provided:
Property | Description |
|
|
governor state | the status of the governor’s connections with engine units (IDLE, |
| E1, BOTH, E2) as described in “Governor” on page 105 |
start time | the time at which the governor partition started up |
node | the node on which this governor is running |
active memory | the size of the object memory heap currently used by the engine |
| unit partition |
allocated memory | the amount of active memory currently allocated to objects |
| created by the engine unit partition |
peak allocated | the amount of allocated memory remaining after the most recent |
memory | memory reclamation (probably the best measure of active |
| memory utilization) |
|
|
Database service In the case of a database service the following information is provided:
Property | Description |
|
|
router channel state | whether the communication channel to the engine unit router is |
| open or closed |
database state | whether the database service is connected to the database or not |
transactions | the number of completed database transactions since the start |
processed | time of the database service |
start time | the time at which the database service partition started up |
node | the node on which this database service is running |
active memory | the size of the object memory heap currently used by the engine |
| unit partition |
|
|
Chapter 4 Managing Engines 121
