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150 Storage Management with DB2 for OS/390
1. For LCUs 0046-0049: 07, 08, 12, 8B, 91, 1E, C8, D0
2. For LCUs 004A-004D: 0A, 8C, 95, 15, 8F, C1, D2
This results in a total of 16 different paths. Look at their busy percentage in the
channel path activity report.
Figure 69. Case Study RMF I/O Queuing Activity Extract
12.2.1.3 Channel Path Activity Report Analysis
Figure 70 on page 150 shows an extract of this report, which establishes:
1. Those paths are not EMIF shared.
2. Their utilization is lower than 14% and well balanced.
So there is no path contention concern.
Figure 70. Case Study RMF Channel Path Activity Extract
I/O QUEUING ACTIVITY
( RMF Report extract for first RVA)
0046 0.000 0.00 0.00 2B00 07 1.988 0.07 0.15
08 1.980 0.11 0.11
12 1.985 0.04 0.02
8B 1.969 0.09 0.16
2B01 91 1.961 0.13 0.24
1E 1.967 0.04 0.31
C8 1.966 0.07 0.16
D0 1.964 0.07 0.24
( RMF Report extract for second RVA)
004A 0.000 0.00 0.00 2C00 0A 0.464 0.00 0.19
8C 0.456 0.10 0.19
95 0.463 0.09 0.19
C3 0.466 0.09 0.28
2C01 15 0.463 0.19 0.09
8F 0.471 0.18 0.46
C1 0.471 0.00 0.19
D2 0.466 0.09 0.19
CHANNEL PATH ACTIVITY
CHANNEL PATH UTILIZATION(%) CHANNEL PATH UTILIZATION(%) CHANNEL PATH UTILIZATION(%)
ID TYPE SHR PARTITION TOTAL ID TYPE SHR PARTITION TOTAL ID TYPE SHR PARTITION TOTAL
00 CNC_S 0.00 08 CNC_S 13.87 10 CNC_S 0.00
01 CNC_S 0.02 09 CNC_S 0.02 11 CNC_S 0.02
02 CNC_S 0.02 0A CNC_S 12.30 12 CNC_S 13.88
03 CNC_S 0.02 0B CNC_S 0.05 13 CNC_S 0.03
04 CNC_S 0.02 0C CNC_S 0.00 14 CNC_S 0.02
05 CNC_S 0.01 0D OFFLINE 15 CNC_S 12.44
06 CNC_S 0.00 0E CNC_S 0.00 16 CNC_S 0.01
07 CNC_S 13.75 0F CNC_S 0.00 17 CNC_S 0.00
1E CNC_S 13.66 26 CNC_S 0.03 2E CNC_S 0.03
1F CNC_S 0.03 27 CNC_S 0.02 2F CNC_S 0.01
34 OFFLINE 8D CNC_S 0.02 95 CNC_S 12.24
80 OFFLINE 8E CNC_S 0.01 96 CNC_S 0.06
84 OSA 0.02 8F CNC_S 12.28 97 CNC_S 0.02
88 CNC_S 0.00 90 CNC_S 0.03 98 CNC_S 0.03
89 CNC_S 0.02 91 CNC_S 13.87 99 CNC_S 0.51
8A CNC_S 0.02 92 CNC_S 0.01 9A CNC_S 0.00
8B CNC_S 13.63 93 CNC_S 0.02 9B CNC_S 0.00
8C CNC_S 12.31 94 CNC_S 0.02 9C CNC_S 0.04
C0 CNC_S 0.02 C8 CNC_S 13.83 D0 CNC_S 13.63
C1 CNC_S 12.34 C9 CNC_S 0.00 D1 CNC_S 0.03
C2 CNC_S 0.03 CA CNC_S 0.00 D2 CNC_S 12.24
C3 CNC_S 12.33 CB CNC_S 0.00 D3 CNC_S 0.01