HP XP P9000Watch and HP XP P9000Sketch Reference Guide for HP XP P9000 Performance Advisor v5.5 (T1789-96341, February 2013)

Table 28 LDEV performance metrics
DescriptionPerformance Metrics
Average Front-end I/OsAvgIO (TotalRd + TotalWr)
Average Write percentageWrite Ratio %
Average Sequential I/O percentageSequential IO ratio %
Average Read Cache Hit percentageRead hits % for LDEV
Average ThroughputThroughput [KB/s]
Average I/O Response TimeIO response time [ms]
Back-end / Front-end I/O ratioBack-end to Front-end IO ratio [%]
Average LDEV I/O utilizationLDEV Utilization % for LDEV
Back-end I/OCache lines staged/destaged [1/s]
Average Read Response timer_ms [ms]
Average Write Response timew_ms [ms]
Maximum of (Maximum Read Response time and Maximum
Write Response time)
ms^ [ms]
Maximum Read Response timer_ms^ [ms]
Maximum Write Response timew_ms^ [ms]
Table 29 describes the RAID group performance metrics.
Table 29 RAID group performance metrics
DescriptionPerformance Metrics
Average Front-end I/OsAvgIO (TotalRd + TotalWr)
Average Write percentageWrite Ratio %
Average Sequential I/O percentageSequential IO ratio %
Average Read Cache Hit percentageRead hits % for LDEV
Average ThroughputThroughput [KB/s]
Average I/O Response TimeIO response time [ms]
Back-end / Front-end I/O ratioBack-end to Front-end IO ratio [%]
Back-end I/OCache lines staged/destaged [1/s]
Average Read Response timer_ms [ms]
Average Write Response timew_ms [ms]
Maximum of (Maximum Read Response time and Maximum
Write Response time)
ms^ [ms]
Maximum Read Response timer_ms^ [ms]
Maximum Write Response timew_ms^ [ms]
Table 30 describes the CPU performance metrics.
62 Viewing performance metrics in HP XP P9000Sketch