HP XP P9000 Performance Advisor Software v6.0 User Guide

Table 40 Metrics and descriptions (continued)
DescriptionMetricMetric category
of all the LDEVS associated
with the given host group.
the last 30 seconds of the
collection interval.
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 thein a specified RAID group
average of the average readfor the given Host group
response time of all the LDEVSover 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 thein a specified RAID group
maximum value among allfor the given Host group
maximum read response timeover 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 404) provides the real-time metrics and their descriptions.
Table 41 Real-time metrics definitions
DefinitionsReal-time metrics
Average Front End writes/Average Front EndTotal IOAvg write ratio
Average FE Sequential IO/ Avareage FE total IOAvg seq IO ratio
Average Read I/Os found in the CacheAvg Read hits
Average read/write I/O response timeAvg IO response Time
Average Read response timeAvg Read response time
Average write response timeAvg write response
Maximum FE read/write response timeMax IO response time
Maximum FE read response timeMax read response time
Maximum FE write response timeMax 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 groupRead/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/OsTotal IO per second
Total FE (Sum of reads and write) I/OsTotal throughput kb per second
Total backend transfers vs Front end IO ratioTotal backend to frontend IO
Total backend read percentageTotal cache lines staged percentage
Total backend writesTotal cache lines destaged
Total backend random read percentageTotal cache lines random staged percentage
Total backend sequential read percentageTotal cache lines seq staged percentage
404 Metric Category, metrics, and descriptions