HP StorageWorks P9000 Performance Advisor Software v5.4 User Guide (T1789-96328, April 2012)

Real-time metrics and descriptions
“Real-time metrics and descriptions” on page 461 provides the real-time metrics and their descriptions.
Table 39 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
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
IO sizeTotal KB per IO
IO sizeTotal random IOPS
IO sizeTotal random read hits
IO sizeTotal random read hit IOPS
IO sizeTotal random write IOPS
IO sizeTotal read IOPS
IO size for readsTotal read KB per IO
IO size for readsTotal read through put KB per second
IO size for readsTotal seq IOPS
IO size for readsTotal seq read hits
HP StorageWorks P9000 Performance Advisor Software User Guide 461