ASAP 3.1 Server Manual

HP NonStop ASAP Server Manual Page 174 of 360
SteCh
device state change. The sample for the device is invalid for one
sample interval.
UnAvl
device configured but the disk process for the device has not started.
PERCENT
is the default for the DISK command. This option displays disk utilization in
percentage busy, percentage reading, percentage used, and percentage writing.
Chit, Queue length, and Swaps are displayed as per second. For a description of
the performance statistics, see the DISK Statistics table.
QUEUE
displays disk queues lengths of read or write operations that are waiting to
execute. The statistics displayed are QLEN, QM, VQLN, VM, RBLK, INPUTKB,
OUTPTKB, and BSPLT. For a description of these statistics, see the DISK
Statistics table.
RATE
displays disk utilization in I/Os per second, including: rate per second, reads per
seconds, writes per second, Chit, Queue length, and Swaps per second. GBUSED
shows the number of gigabytes allocated. For a description of the performance
statistics, see the DISK Statistics table.
STATE
shows all attributes that have an associated state. Associated states are displayed
for the disk command without any options, and the disk command with these
options: RATE, QUEUE, AVG, PERCENT (Default).
DISK Statistics
The following table lists the DISK statistics and characteristic options. You can also
specify HELP DISKSTATS to display a list of disk statistics and options.
Table 6-5. DISK Statistics and Descriptions
Statistics
Option/Description
BSPLT
The block split total of 512 through 4096 block splits for the volume.
BUSY%
Total percentage disk busy during read, write, and seek operations.
CHIT
Cache hits. Total of 512 through 4096 blocks that occurred per second.