Filter
Top Products
132 Storage Management with DB2 for OS/390
Figure 52. Channel Path Activity Report: LPAR Mode
11.2.2 Using RMF Reports
In a performance monitoring context, there are several heterogeneous
considerations to be aware of before using RMF reporting. When doing a
resource level analysis, what is the reason for using SMs for DB2, and why get
reports at the Storage Group level? One may also search for more in-depth
analysis tools than RMF. Moreover, as RMF produces a very large number of
pages in its reports, spreadsheet automatic data capture and manipulation may
be viewed with interest. Finally, the common approach of DB2 and storage
specialists on the same performance study cases requires definition of how
different tools report the same DB2 I/O.
11.2.2.1 Resource Level Analysis
Some RMF reports must be consolidated to get a global view of contention at the
resource level.
For channel utilization, the relevant information is TOTAL UTILIZATION %, which
consolidates any EMIF channel utilization on one CPC. When several CPCs
share an LCU, pathing analysis must be extended to include all LPAR activities to
this LCU over all CPCs.
Cache utilization reports consolidate all different LPAR activities for each LCU.
So, to get the whole storage server view, a manual consolidation of LCUs is
mandatory. For device activity, RMF data capture is done at the LCU level, so two
levels of weighted consolidation are required: first, between all LPARs, to get the
CHANNEL PATH ACTIVITY
PAGE 1
OS/390 SYSTEM ID IPO4 START 11/19/1998-10.30.00 INTERVAL 001.00.00
REL. 02.05.00 RPT VERSION 2.4.0 END 11/19/1998-11.30.00 CYCLE 1.000 SECONDS
IODF = 40 CR-DATE: 11/05/98 CR-TIME: 16.56.05 ACT: POR MODE: LPAR CPMF: AVAILABLE
CHANNEL PATH UTILIZATION(%) CHANNEL PATH UTILIZATION(%) CHANNEL PATH UTILIZATION(%)
ID TYPE SHR PARTITION TOTAL ID TYPE SHR PARTITION TOTAL ID TYPE SHR PARTITION TOTAL
08 OS Y 0.00 0.00 19 CN D Y 0.16 3.43 85 IS OFFLINE
0C IS OFFLINE 1A CN D Y 0.00 0.00 88 BY 0.00
0D IS OFFLINE 1B CN D Y 1.28 1.73 89 BL OFFLINE
14 CN D Y 8.28 8.62 80 CC Y 0.52 1.48 8A BL 0.00 0.00
15 CN D Y 7.84 8.58 81 CN Y 0.33 0.33 8C BL 0.00 0.00
16 CN D Y 8.84 9.22 82 CN D Y 9.11 15.32 8D BL 0.17 0.17
17 CN D Y 8.28 8.51 83 CN D Y 0.00 0.00 8E BL 0.00 0.00
18 CN D Y 0.00 0.00 84 IS OFFLINE 90 BL 0.14 0.14
91 BL OFFLINE 9B CN D Y 0.00 0.00 A3 CN D Y 0.78 1.07
92 BL 0.00 0.00 9C CN D Y 9.15 15.25 A4 CN D Y 1.29 1.58
94 BL 0.00 0.00 9D CN Y 0.01 0.01 A5 CN D Y 36.18 36.93
95 BL OFFLINE 9E CN D Y 11.73 12.30 A6 CN D Y 21.39 21.50
96 BL OFFLINE 9F CN D Y 35.47 35.74 A7 CN D Y 1.32 1.71
98 CN D Y 8.43 14.62 A0 CN Y 0.00 0.00 B0 CN D Y 0.00 0.00
99 CN D Y 0.00 0.00 A1 CN D Y 0.00 0.00 B1 CN D Y 0.00 0.00
9A CN D Y 0.00 0.00 A2 CN D Y 20.98 21.06 B2 CN D Y 9.41 15.65
B3 CN D Y 0.03 0.04 BB CN D Y 7.79 7.70 DC IS OFFLINE
B4 CN D Y 11.62 11.63 BC BL OFFLINE DD IS OFFLINE
B5 CN D Y 36.13 36.74 BD BL OFFLINE E0 CV OFFLINE
B6 CN D Y 0.00 0.00 BE OFFLINE E1 CV 0.02 0.02
B7 CN D Y 0.80 1.05 D8 CN Y 0.74 1.37 E2 CN D Y 0.13 0.16
B8 CN D Y 8.02 7.67 D9 CC Y 0.36 0.41 E3 CN D Y 0.00 0.00
B9 CN D Y 0.78 1.11 DA CN D Y 21.31 21.70 E4 CN D Y 10.27 10.32
BA CN D Y 7.68 7.89 DB CN D Y 0.00 0.00 E5 CN D Y 2.33 5.74
E6 CN D Y 0.15 0.20
E7 CN D Y 0.79 1.14
E8 CN Y 0.00 0.00
E9 CN D Y 21.01 21.62
EA CN D Y 41.52 42.42
EB CN D Y 12.38 12.37