HP XP Performance Advisor Software - Manual (Page 405)

Table 40 Metrics and descriptions (continued)
Description Metric Metric category
The maximum write response
time value for a host group is The maximum write response
time of all the LDEVs created Maximum Write Response
Time
obtained after taking the in a specified RAID group
maximum value among all for the given Host group in
maximum write response time the last 30 seconds of the
collection interval.
of all the LDEVS associated
with the given host group.
The average read response
time value for a host group is The average read response
time of all the LDEVs created Average Read Response
Time
obtained after taking the in a specified RAID group
average of the average read for the given Host group
response time of all the LDEVS over the entire data
collection interval.
associated with the given host
group.
The maximum read response
time value for a host group is The maximum read response
time of all the LDEVs created Maximum Read Response
Time
obtained after taking the in a specified RAID group
maximum value among all for the given Host group
maximum read response time over the last 30 seconds of
the collection interval.
of all the LDEVS associated
with the given host group.
Real-time metrics and descriptions
“Real-time metrics and descriptions” (page 405) provides the real-time metrics and their descriptions.
Table 41 Real-time metrics definitions
Definitions Real-time metrics
Average Front End writes/Average Front EndTotal IO Avg write ratio
Average FE Sequential IO/ Avareage FE total IO Avg seq IO ratio
Average Read I/Os found in the Cache Avg Read hits
Average read/write I/O response time Avg IO response Time
Average Read response time Avg Read response time
Average write response time Avg write response
Maximum FE read/write response time Max IO response time
Maximum FE read response time Max read response time
Maximum FE write response time Max write response time
Read MB share (%) out of the total MB for the selected host
group Read/Write MB Ratio [%] frontend
Read IO share (%) out of total IO for the selected host group Read/Write IO Ratio [%] frontend
Total IO missed of all the LDEVs created in a specified RAID
group for the given Host group over the entire data collection
interval Total IO Miss FrontEnd
Total FE (Sum of reads and write) I/Os Total IO per second
Total FE (Sum of reads and write) I/Os Total throughput kb per second
Total backend transfers vs Front end IO ratio Total backend to frontend IO
Total backend read percentage Total cache lines staged percentage
Real-time metrics and descriptions 405