Channel Path Activity Report Analysis, E U I N G

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.

				I/O	Q U E U I N G		A C T I V I T Y
			( 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

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.

				C H A N N E L P A T H A C T I V I T Y
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

Figure 70. Case Study RMF Channel Path Activity Extract

150Storage Management with DB2 for OS/390

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IBM 5655-DB2, 5695-DF1 manual Channel Path Activity Report Analysis, E U I N G