Appendix A. Performance data and statistics gathering 747
iscsi_io Displays the total I/O operations th at are transferred per second for iSCSI 
traffic on the system.
write_cache_pc Displays the percentage of  the write cache usage for the node.
total_cache_pc Displays the total percentage fo r both the write and read cache usage for 
the node.
vdisk_mb Displays the average number of megabytes transferred per second for 
read and write operations to volumes during the sample period.
vdisk_io Displays the average number of I/O operations that are transferred per 
second for read and write operations to volumes during the sample period.
vdisk_ms Displays the average amount of time  in milliseconds that the system takes 
to respond to read and write requests to volumes over the sample period.
mdisk_mb Displays the average number of megabytes transferred per second for 
read and write operations to MDisks during the sample period.
mdisk_io Displays the average number of I/O operations that are transferred per 
second for read and write operations to MDisks during the sample period.
mdisk_ms Displays the average amount of time  in milliseconds that the system takes 
to respond to read and write requests to MDisks over the sample period.
drive_mb Displays the average number of megabytes transferred per second for 
read and write operations to drives during the sample period.
drive_io Displays the average number of I/O operations that are transferred per 
second for read and write operations to drives during the sample period.
drive_ms Displays the average amount of time  in milliseconds that the system takes 
to respond to read and write requests to drives over the sample period.
vdisk_w_mb Displays the average number of megabytes transferred per second for 
read and write operations to volumes during the sample period.
vdisk_w_io Displays the average number of I/O operations that are transferred per 
second for write operations to volumes during the sample period.
vdisk_w_ms Displays the average amount of time  in milliseconds that the system takes 
to respond to write requests to volumes over the sample period.
mdisk_w_mb Displays the average number of megabytes transferred per second for 
write operations to MDisks during the sample period.
mdisk_w_io Displays the average number of I/O operations that are transferred per 
second for write operations to MDisks during the sample period.
mdisk_w_ms Displays the average amount of time  in milliseconds that the system takes 
to respond to write requests to MDisks over the sample period.
drive_w_mb Displays the average number of megabytes transferred per second for 
write operations to drives during the sample period.
drive_w_io Displays the average number of  I/O operations that are transferred per 
second for write operations to drives during the sample period.
drive_w_ms Displays the average amount of time  in milliseconds that the system takes 
to respond write requests to drives over the sample period.
Value Description