Most active physical volumes
The filemon command can be used to create a report that lists the most active physical volumes on the various layers of file system utilization, including the logical file system, virtual memory segments, LVM, and physical disk layers. This section describes the column headings displayed on the report.
- util
- Utilization of physical volume. Note: Logical volume I/O requests start before and end after physical volume I/O requests. Total logical volume utilization will appear therefore to be higher than total physical volume utilization.
- #rblk
- Number of 512-byte blocks read from physical volume.
- #wblk
- Number of 512-byte blocks written to physical volume.
- KB/s
- Average transfer data rate in KB per second.
- volume
- Physical volume name.
- description
- Simple description of the physical volume type, for example, SCSI Multimedia CD-ROM Drive or 16 Bit SCSI Disk Drive.
The utilization is presented in percentage, 0.10 indicates 10 percent busy during measured interval.