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Appendix C Report Format of Performance Report Editor
Explanation of display items
Display item
disk array name
Leftmost position (configuration
change mark)
date, time
iops
trrate
av.len
av.resp
w.ratio
r.hit
pref.hit
w.hit
(3) Host director port performance detail report
Chronologically displays port-based statistic information on the host director port extracted from
the statistic information file. Below is shown a display image (file name:
20010529NECStorage4100_psl_hp.txt).
<< HOST DIRECTOR PORT PERFORMANCE REPORT >>
disk array name
NECStorage4100
port no = 00h-00h
date
time ---------- iops ---------- ------ trrate(MB/s) ------ ------- av.len(KB) ------- ------ av.resp(ms) ------- w.ratio(%)
total
read
01-05-29 18:17
99.66
73.89
01-05-29 18:22
146.99
106.41
* 01-05-29 18:27
156.50
116.11
01-05-29 18:32
138.81
99.78
:
:
:
port no = 01h-00h
date
time ---------- iops ---------- ------ trrate(MB/s) ------ ------- av.len(KB) ------- ------ av.resp(ms) ------- w.ratio(%)
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
:
:
:
port no = xxh-xxh
:
:
PERFORMANCE REPORT SUCCESSFUL.
Nickname of the disk array
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
I/O density (count/second) in the accumulation period
External transfer rate (megabyte/second) in the accumulation period
External average transfer length (kilobyte) in the accumulation period
External average response time (millisecond) in the accumulation period
Ratio (percent) of write I/O in the accumulation period
Ratio (percent) of cache-hit read I/O in the accumulation period
Ratio (percent) of prefetch-hit read I/O among cache-hit read I/O in the
accumulation period
Ratio (percent) of cache-hit write I/O in the accumulation period
write
total
read
25.77
4.18
2.69
40.58
6.66
4.30
40.39
7.01
4.66
39.04
6.35
4.10
:
:
:
:
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
:
:
:
:
Explanation
write
total
read
write
1.49
42.99
37.31
59.26
2.36
46.36
41.38
59.43
2.35
45.85
41.08
59.54
2.26
46.88
42.03
59.25
:
:
:
:
write
total
read
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
:
:
:
:
40
total
read
write
8.69
0.40
32.47
25.86
9.75
0.50
34.02
27.61
8.90
0.44
33.25
25.81
10.16
0.77
34.18
28.12
:
:
:
:
total
read
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
:
:
:
:
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