XPWatch and XPSketch Reference guide for HP XP P9000 Performance Advisor

Table 14 PVOL SVOL RAID Group performance metrics (continued)
DescriptionUnitPerformance metrics
Average Write percentage.%Wr%
Average Sequential I/O percentage.%Seq%
Average Read Cache Hit percentage.%r_H%
Average I/O size.KB/IOkB/IO
Average Throughput.KB/sKB/s
Average I/O Response time within
back-end array.
msms
Average Read Response time.msr_ms
Average Write Response time.msw_ms
Maximum of (Maximum Read Response
time and Maximum Write Response
time).
msms^
Maximum Read Response time.msr_ms^
Maximum Write Response time.msw_ms^
Front-end I/O Density [IOPS/GB].numberFeD
Back-end / Front-end I/O ratio.numberBe/Fe
Average RAID group I/O utilization.%RG%
Back-end I/O.numberBe
P-VOL S-VOL CLPR performance metrics
Table 15 (page 43) describes the performance metrics of CLPRs associated with the configured
P-VOLs and S-VOLs.
Table 15 P-VOL S-VOL CLPR performance metrics
DescriptionUnitPerformance metrics
CLPR identifier.numberCLPR
Size of the CLPR in MB.numberSize[MB]
Cache usage [MB] of the CLPR.numberCmUs[MB]
Write cache usage [MB] of the CLPR.numberCmWr[MB]
Side File usage [MB] of the CLPR.numberCmSf[MB]
Cache random read hits of the CLPR.numberCmRdH
Cache utilization [%] of the CLPR.%CmUs%
Write cache utilization [%] of the CLPR,
max=70%.
%CmWr%
P-VOL S-VOL Port performance metrics
Table 16 (page 44) describes the performance metrics of ports configured as the master and
receiver ports for the P-VOLs and S-VOLs.
Understanding performance metrics 43