These columns identify the number of times the File System software performed a cylinder management event associated with the WAL log.
| Column Name | Mode | Description | Data Type |
|---|---|---|---|
| FileWALBufBusy | count | Number of times a WAL append operation resulted in a buffer switch that waited for the next buffer to exit a busy state. | FLOAT |
| FileWALSize | track | Current size of the WAL log in cylinders. | FLOAT |
| FileWCylAllocs | count | Number of new WAL cylinders allocated. | FLOAT |
| FileWCylFrees | count | Number of times the File System logically frees a cylinder. | FLOAT |