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|