IBM 5695-DF1 ユーザーズマニュアル
I/O Performance and Monitoring Tools
137
For storage specialists, we recommend monitoring the FREE SPACE
COLLECTION LOAD which represents the amount of back-end physical space
collected for free space consolidation that did not yield available free space. This
is the average percent full of collected storage areas. During periods with little
activity this number is unimportant; but if write activity is heavy (thus requiring
new storage for the LSF), the free space collection load makes it possible to
assess how easy it has been to free the needed space. The higher the free space
collection load is, the less free space is obtained per unit of effort put into the free
space collection process.
COLLECTION LOAD which represents the amount of back-end physical space
collected for free space consolidation that did not yield available free space. This
is the average percent full of collected storage areas. During periods with little
activity this number is unimportant; but if write activity is heavy (thus requiring
new storage for the LSF), the free space collection load makes it possible to
assess how easy it has been to free the needed space. The higher the free space
collection load is, the less free space is obtained per unit of effort put into the free
space collection process.
Figure 54. IXFP Device Performance Subsystem Summary Report
11.3.2 Cache Effectiveness Report
Figure 55 on page 138 shows the subsystem summary of the Cache
Effectiveness report. Most of the fields provide a good indicator of the RVA
workload.
Effectiveness report. Most of the fields provide a good indicator of the RVA
workload.
The fields to review are as follows:
• READ PER SEC is the average number of read operations per second to the
subsystem.
IBM ITSO POKEEPSIE
17:30 Thursday, February 18, 1999
XSA/REPORTER
DEVICE PERFORMANCE OVERALL SUMMARY
18FEB1999
17:31:24
SIBDPIO
V2 R1 L1
SUBSYSTEM 20395
REPORT START DATE: 17FEB1999
REPORT END DATE: 17FEB1999
REPORT START TIME: 15:16
REPORT END TIME: 15:54
FDID
DEV
VOLSER
T/P
% DEV
I/O
KBYTES
ACCESS
-I/O SERVICE TIME (MS)- % DEV
% DEV
% DEV
ADDR
AVAIL
PER SEC
PER SEC
DENSITY
TOTAL
DISC
CONNECT
UTIL
DISC
CONN
----
----
--------
---
-----
-------
-------
-------
-----
------
-------
-----
-----
-----
0000
2B00
RV2B00
P
100.0
4.2
549.9
1.5
33.8
8.6
25.2
14.3
3.6
10.7
0001
2B01
RV2B01
P
100.0
0.0
0.0
0.0
0.8
0.0
0.8
0.0
0.0
0.0
00FE
2BFE
RV2BFE
P
100.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
00FF
2BFF
RV2BFF
P
100.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
===================================================================================================================================
SUBSYSTEM
% DEV
I/O
KBYTES
ACCESS
-I/O SERVICE TIME (MS)- % DEV
% DEV
% DEV
SUMMARY
AVAIL
PER SEC
PER SEC
DENSITY
TOTAL
DISC
CONNECT
UTIL
DISC
CONN
-----
-------
-------
-------
-----
------
-------
-----
-----
-----
PROD PARTITION
100.0
45.7
5481.4
0.1
30.5
7.3
23.3
0.5
0.1
0.4
OVERALL TOTALS
100.0
45.7
5481.4
0.1
30.5
7.3
23.3
0.5
0.1
0.4
AVG % DRIVE
COEFF OF
NET CAPACITY LOAD %
FREE SPACE COLLECTION LOAD
COLL FREE SPC (%)
UNCOLL FREE SPC (%)
MODULE UTIL
VARIATION
TEST
PROD
OVERALL
TEST
PROD
OVERALL
TEST
PROD
OVERALL
TEST
PROD
OVERALL
----------------------
-----
-----
-------
-----
-----
-------
-----
-----
-------
-----
-----
-------
10.6
78
0.0
56.4
56.4
0.0
0.0
0.0
0.0
42.4
42.4
0.0
1.2
1.2
====================================================================================================================================
CHANNEL INTERFACE
CLUSTER
INTERFACE
INTERFACE
CHANNEL
I/O
% ACTIVE
PERFORMANCE
ID
NAME
SPEED
PER SEC
ON CHNL
-------
---------
---------
-------
-------
--------
0
A
20.0
5.8
14330
0
C
20.0
5.7
7172
0
I
20.0
5.7
14330
0
K
20.0
5.7
14330
1
A
20.0
5.7
14330
1
C
20.0
5.7
14330
1
I
20.0
5.7
13.4
1
K
20.0
5.7
13.3
-====================================================================================================================================
0
0
»----------------------------»------»------»------»------»------»------»------»------»------»------»
» FREQUENCY (PERCENTILE)
» FREQUENCY (PERCENTILE)
»
10
»
20
»
30
»
40
»
50
»
60
»
70
»
80
»
90
» 100
»
DISTRIBUTION OF DRIVE»----------------------------»------»------»------»------»------»------»------»------»------»------»
MODULE UTILIZATION
MODULE UTILIZATION
» % DRIVE MODULE UTILIZATION » 10.4 » 10.4 » 10.5 » 10.5 » 10.6 » 10.6 » 10.6 » 10.7 » 10.8 » 11.1 »
»----------------------------»------»------»------»------»------»------»------»------»------»------»
»----------------------------»------»------»------»------»------»------»------»------»------»------»