sio show deviostat
Function
The sio show deviostat command is used to view the I/O performance data of a disk.
Format
sio show deviostat sdid=? [ interval=? ]
Parameters
Parameter |
Description |
Value |
|---|---|---|
sdid=? |
Physical ID of the disk. |
To obtain the value, run "sddebug show disk" without parameter. |
interval=? |
Interval. |
The value is an integer ranging from 1 to 60(default:1). The default unit is second. |
Views
Diagnostic view
Usage Guidelines
None
Example
View the I/O performance data of a disk.
admin:/diagnose>sio show deviostat sdid=64 interval=5
sdId : 64
rrqm/s : 0.0
wrqm/s : 0.0
r/s : 0.0
w/s : 0.0
rkB/s : 0.0
wkB/s : 0.0
avgrq-sz : 0.0
avgqu-sz : 0.0
drv_avg/ms : 0.0
await/ms : 0.0
r_avg/ms : 0.0
w_avg/ms : 0.0
svctm/ms : 0.0
util : 0.0
iod/ms : 0.0
dif/ms : 0.0
ftds/ms : 0.0
sio : 0
sched : 0
dsp : 0
drv : 0
rcvIoCnt : 0
System Response
The following table describes the parameter meanings.
Parameter |
Meaning |
|---|---|
sdId |
Physical ID of the disk. |
rrqm/s |
Number of merged read I/Os per second. |
wrqm/s |
Number of merged write I/Os per second. |
r/s |
Read IOPS. |
w/s |
Write IOPS. |
rkB/s |
Bandwidth of read I/Os. |
wkB/s |
Bandwidth of write I/Os. |
avgrq-sz |
Average I/O size. |
avgqu-sz |
Average queue depth. |
drv_avg/ms |
Average latency of read/write I/Os. |
await/ms |
I/O waiting time on the block device management (BDM) side. |
r_avg/ms |
Average latency of read I/Os. |
w_avg/ms |
Average latency of write I/Os. |
svctm/ms |
Average service time of I/Os. |
util |
Disk utilization. |
iod/ms |
Time for IOD scheduling. |
dif/ms |
Time for the DIF of I/Os. |
ftds/ms |
Time for FTDS. |
sio |
Number of I/Os on the SIO layer. |
sched |
Number of I/Os in the scheduler. |
dsp |
Number of I/Os under the dispatching layer. |
drv |
Number of I/Os delivered to the driver. |
rcvIoCnt |
Number of I/Os that are processed. |
Previous
