These columns identify background file system overhead associated with fragmented free space to achieve one large free space within that cylinder (CylDefrag).
- Event counts are found in ResUsageSvpr.
- Each cylinder defragment event implies one logical cylinder index read and one logical cylinder index write.
- Only logical I/Os and the amount moved (KB) are identified. Cylinder defragments are done on cylinders containing permanent tables (including append and transient journal tables) only.
| Column Name | Mode | Description | Data Type |
|---|---|---|---|
| FileDbCylDefragKB | count | KB moved by the FileDbCylDefragIO. | FLOAT |
| FileDbCylDefragIO | count | Number of permanent data block logical I/Os due to cylinder defragmentation. | FLOAT |