HP XP Performance Advisor Software - Manual (Page 36)

Description Unit
Performance
metrics
Minimal I/O rate of the last 60 seconds IO/s MinIO
Maximum I/O rate of the last 60 seconds IO/s MaxIO
Average I/O rate of the last 60 seconds IO/s AvgIO
Calculate average I/O size (=avg KB / avgIO) KB/IO KB/IO
Average throughput of the last measurement interval KB/s CurKb
Minimal throughput of the last 60 seconds KB/s MinKb
Maximum throughput of the last 60 seconds KB/s MaxKb
Average throughput of the last 60 seconds KB/s AvgKb
LDEV performance metrics
Table 14 describes the LDEV performance metrics.
Table 14 LDEV performance metrics
Description Unit
Performance
metrics
Logical Device name number LDEV
RAID Group identifier number RG
LDEV spread over number of DKAs number DKA
Average Front-end I/Os number IOPS
Average Write percentage % Wr%
Average Sequential I/O percentage % Seq%
Average Read Cache Hit percentage % r_H%
Average I/O Size KB/IO KB/IO
Average Throughput KB/s KB/s
Average I/O Response time ms ms
Front-end I/O Density [IOPS/GB] number FeD
Back-end/Front-end I/O ratio number Be/Fe
Average LDEV I/O utilization % LD%
Back-end I/O number Be
Viewing performance metrics in XPWatch 36