The cache buffer activity record (type 2) is listed in the following table.
Statistic | Description |
---|---|
Record type | Integer value representing the type of statistics sampling record |
Node number | Node number relative to the system |
Process number | Process number relative to the system |
Clock ticks | 64-bit number of microseconds elapsed since the node was initialized |
Node CPU time | 64-bit number of microseconds of CPU time charged for node |
Node ticks | 64-bit number of logical operations performed by the node |
Process CPU time | 64-bit number of microseconds of CPU time (including start process CPU time and end process CPU time) charged for the process |
Process ticks | 64-bit number of logical operations performed by the process |
Process logical clock | Sequential 64-bit number for inter-node process context switches |
User number | Number supplied by the write sample request |
Cache type | For details, see "Cache Type", later in this chapter |
Buffer activity | For details, see "Cache Activity", later in this chapter |
Order | Order in the LRU (least-recently used) list for the buffer |
Birth time | 64-bit number of node ticks when the buffer was created |
Operations | 64-bit number of requests (hashes) for the buffer during its lifetime |
Class id | Class number for the object identifier |
Instance id | Instance number for the object identifier |
Owner class id | Owner object class number for the object identifier |
Sub level | Class hierarchy level number for the object identifier |
Sub id | Subobject number for the object identifier |
Edition | Edition number for the object identifier |
Object size | Object record size |
Flag | For details, see "Buffer Flag", earlier in this chapter |
Status | For details, see "Object Buffer Status", later in this chapter |
Semantic category | For details, see "Semantic Category", later in this chapter |
Physical category | For details, see "Physical Category", later in this chapter |
Buffer size | Total number of bytes occupied in cache for the object |
Buffer process number | Process number associated with the buffer |
Shared | Only for internal use by JADE |
Replica | Only for internal use by JADE |
Nail count | Only for internal use by JADE |
I/O count | Only for internal use by JADE |
Internal flags | Only for internal use by JADE |
Lives | Only for internal use by JADE |
For type 2 records, the order value for non-shared transient objects is always zero (0). In addition, the process number, process CPU time, process ticks, and process logical clock values for the type 2 records for non-shared transient objects are those of the process that creates the object, rather than those of the process making the sampling request.