Filter
Top Products
145Administering dynamic multipathing (DMP)
Administering DMP using vxdmpadm
c2t115d0 87 0 44544 0 0.001200 0.000000
c3t115d0 0 0 0 0 0.000000 0.000000
c2t103d0 87 0 44544 0 0.007315 0.000000
c3t103d0 0 0 0 0 0.000000 0.000000
c2t102d0 87 0 44544 0 0.001132 0.000000
c3t102d0 0 0 0 0 0.000000 0.000000
c2t121d0 87 0 44544 0 0.000997 0.000000
c3t121d0 0 0 0 0 0.000000 0.000000
c2t112d0 87 0 44544 0 0.001559 0.000000
c3t112d0 0 0 0 0 0.000000 0.000000
c2t96d0 87 0 44544 0 0.007057 0.000000
c3t96d0 0 0 0 0 0.000000 0.000000
c2t106d0 87 0 44544 0 0.007247 0.000000
c3t106d0 0 0 0 0 0.000000 0.000000
c2t113d0 87 0 44544 0 0.007235 0.000000
c3t113d0 0 0 0 0 0.000000 0.000000
c2t119d0 87 0 44544 0 0.001390 0.000000
c3t119d0 0 0 0 0 0.000000 0.000000
The following command changes the amount of memory that vxdmpadm can
use to accumulate the statistics:
# vxdmpadm iostat start memory=4096
The displayed statistics can be filtered by path name, DMP node name, and
enclosure name (note that the per-CPU memory has changed following the
previous command):
# vxdmpadm iostat show pathname=c3t115d0
cpu usage = 8132us per cpu memory = 4096b
OPERATIONS BYTES AVG TIME(ms)
PATHNAME READS WRITES READS WRITES READS WRITES
c3t115d0 0 0 0 0 0.000000 0.000000
# vxdmpadm iostat show dmpnodename=c0t0d0
cpu usage = 8501us per cpu memory = 4096b
OPERATIONS BYTES AVG TIME(ms)
PATHNAME READS WRITES READS WRITES READS WRITES
c0t0d0 1088 0 557056 0 0.009542 0.000000
# vxdmpadm iostat show enclosure=Disk
cpu usage = 8626us per cpu memory = 4096b
OPERATIONS BYTES AVG TIME(ms)
PATHNAME READS WRITES READS WRITES READS WRITES
c0t0d0 1088 0 557056 0 0.009542 0.000000
You can also specify the number of times to display the statistics and the time
interval. Here the incremental statistics for a path are displayed twice with a
2-second interval:
# vxdmpadm iostat show pathname=c3t115d0 interval=2 count=2
cpu usage = 8195us per cpu memory = 4096b
OPERATIONS BYTES AVG TIME(ms)
PATHNAME READS WRITES READS WRITES READS WRITES