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(5) Logical disk performance detail report
Chronologically displays disk-based statistic information on the logical disk extracted from the
statistic information file. Below is shown a display image (file name:
20010529NECStorage4100_psl_ld.txt).
<< LOGICAL DISK PERFORMANCE REPORT >>
disk array name
NECStorage4100
disk no = 0000h
evn = LD0000
date
time ---------- iops ---------- ------ trrate(MB/s) ------ ------- av.len(KB) ------- ------ av.resp(ms) ------- w.ratio(%) ----- cache hit(%) -----
total
read
01-05-29 18:17
0.00
0.00
01-05-29 18:22
0.00
0.00
* 01-05-29 18:27
0.00
0.00
01-05-29 18:32
0.00
0.00
:
:
:
:
disk no = 0001h
evn = LD0001
date
time ---------- iops ---------- ------ trrate(MB/s) ------ ------- av.len(KB) ------- ------ av.resp(ms) ------- w.ratio(%) ----- cache hit(%) -----
total
read
01-05-29 18:17
99.82
73.84
01-05-29 18:22
147.48
107.18
* 01-05-29 18:27
156.12
115.62
01-05-29 18:32
138.98
100.06
:
:
:
:
disk no = xxxxh
evn = nnnnnnnnnnnnnnnnnnnnnnnn
:
:
PERFORMANCE REPORT SUCCESSFUL.
Explanation of display items
Display item
disk array name
disk no
evn
Leftmost position (configuration
change mark)
date, time
iops
trrate
av.len
av.resp
Appendix C Report Format of Performance Report Editor
write
total
read
write
total
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
:
:
:
:
write
total
read
write
total
25.98
4.20
2.70
1.50
43.12
40.31
6.65
4.31
2.34
46.16
40.50
7.01
4.65
2.36
45.99
38.92
6.34
4.10
2.25
46.75
:
:
:
:
Nickname of the disk array
Number of the logical disk
Nickname of the logical disk
An asterisk is displayed immediately after change in the disk array
configuration or restart of accumulation of statistic information.
Date and time statistic information was collected
External I/O density (count/second) in the accumulation period
total:
External I/O density for all I/O
read:
External I/O density for read I/O
write:
External I/O density for write I/O
External transfer rate (megabyte/second) in the accumulation period
total:
External transfer rate for all I/O
read:
External transfer rate for read I/O
write:
External transfer rate for write I/O
External average transfer length (kilobyte) in the accumulation period
total:
External average transfer length for all I/O
read:
External average transfer length for read I/O
write:
External average transfer length for write I/O
External average response time (millisecond) in the accumulation period
total:
External average response time for all I/O
read:
External average response time for read I/O
write:
External average response time for write I/O
43
read
write
total
read
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
:
:
:
:
:
read
write
total
read
37.43
59.28
8.75
0.40
41.18
59.39
9.67
0.50
41.21
59.63
8.95
0.44
41.91
59.17
10.11
0.77
:
:
:
:
:
Explanation
----- cache hit(%) -----
write
read prefetch
read prefetch
write
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
:
:
:
:
:
:
----- cache hit(%) -----
write
read prefetch
read prefetch
write
32.46
26.03
99.37
99.37
89.28
89.28
0.00
34.05
27.33
98.94
98.94
86.95
86.95
0.00
33.28
25.94
99.45
99.45
87.87
87.87
0.00
34.15
28.00
93.08
93.08
85.94
85.94
0.00
:
:
:
:
:
:
write
0.00
0.00
0.00
0.00
:
:
write
0.00
0.00
0.00
0.00
:
:
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