HP LeftHand P4000 SAN Solutions User Manual
Page 222
Table 72 Performance Monitor statistics
Storage system
Volume or
snapshot
Cluster
Definition
Statistic
X
X
X
Average read and write transfer size for the
sample interval.
Average I/O
Size
X
X
X
Average read transfer size for the sample
interval.
Average Read
Size
X
X
X
Average write transfer size for the sample
interval.
Average Write
Size
-
X
X
Percent of reads served from cache for the sample
interval.
Cache Hits Reads
X
-
-
Percent of processor used on this storage system
for the sample interval.
CPU Utilization
X
Number of Fibre Channel Read Frames on this
storage system for the sample interval.
FC Read Frames
X
Number of Fibre Channel Read Words on this
storage system for the sample interval.
FC Read Words
X
Number of Fibre Channel Write Frames on this
storage system for the sample interval.
FC Write Frames
X
Number of Fibre Channel Write Words on this
storage system for the sample interval.
FC Write Words
X
X
Average time, in milliseconds, to service read
requests.
IO Latency Reads
X
Average time, in milliseconds, to service read
and write requests.
IO Latency Total
X
X
Average time, in milliseconds, to service write
requests.
IO Latency
Writes
X
X
X
Percent of IO’s that are reads
IO’s Reads
Percent
X
X
X
Percent of IO’s that are writes
IO’s Writes
Percent
X
X
X
Total percent of IO’s. This value is always 100.
IO’s Total Percent
X
X
X
Average read requests per second for the sample
interval.
IOPS Reads
X
X
X
Average read+write requests per second for the
sample interval.
IOPS Total
X
X
X
Average write requests per second for the sample
interval.
IOPS Writes
X
-
-
Percent of total memory used on this storage
system for the sample interval.
Memory
Utilization
X
-
-
Bytes read from the network for the sample
interval.
Network Bytes
Read
X
-
-
Bytes read and written over the network for the
sample interval.
Network Bytes
Total
X
-
-
Bytes written to the network for the sample
interval.
Network Bytes
Write
222 Monitoring performance