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The VM Channel Path Activity report provides information
about channel path usage. Channel paths provide the
interface that allows for control units and I/O devices to be
physically connected to the I/O subsystem.
INTENDED USE:
The report is designed to help analyze each channel path by
path ID. For each ID, the type of path and the percent path
usage is reported. If a path is offline, this is reported in
place of the percent usage. The report can help detect
bottlenecks in the I/O subsystem caused by excessive path
utilization.
For systems using HiperSockets, detailed traffic information
is provided in a separate section, at the end of the report.
FORMAT:
A tabular listing that contains one line of information
for each active channel configured during the reporting
period. In addition to the channel path ID, the following
columns are shown on the report:
CHANNEL PATH ID - Hexadecimal number of the channel
path identifier.
TYPE - Type of channel path.
SHR Y/N - An indication of whether a channel path
is defined as shared between one or more logical
partitions. YES indicates the channel path is
shared.
UTILIZATION(%) PART - The channel path utilization
percentage for the individual partition.
UTILIZATION(%) TOTAL - The channel path utilization
percentage for the CPC.
UTILIZATION(%) BUS - Percentage of bus cycles, the
bus has been found busy for this channel in relation
to the theoretical limit.
READ (M/B SEC) PART - Transfer data rates from the
control unit to the channel for this partition.
READ (M/B SEC) TOTAL - Transfer data rates from the
control unit to the channel for the CPC.
WRITE (M/B SEC) PART - Transfer data rates from the
channel to the control unit for this partition.
WRITE (M/B SEC) TOTAL - Transfer data rates from the
channel to the control unit for the CPC.
An example of this report is shown in Figure 3-21.
INQUIRY ID:
VMXLPA
DATA SOURCE (File/Timespan):
VMXCPM01 - DAYS
DATA ELEMENTS USED:
CHANNEL - Physical Channel Address
CPMTYPE - VM Channel Path Type
CPMCMG - VM Channel Measurement Group
CPMECPMF - VM Ext Channel Data Supported
CPMCPMF - VM Channel Data Enabled
CPMSHRCT - VM Channel Path Shared
CPMPCPBY - VM Percent Channel Busy - LPAR
CPMPCPSY - VM Percent Channel Busy - CPC
CPMPCBUS - VM Percent Bus Busy
CPMPSPR - VM FICON Read MB/Sec - LPAR
CPMPSTR - VM FICON Read MB/Sec - CPC
CPMPSPW - VM FICON Write MB/Sec - LPAR
CPMPSTW - VM FICON Write MB/Sec - CPC
CPMPSHPW - VM HiperSockets Write MB/Sec - LPAR
CPMPSPMS - VM HiperSockets Message Sent Rate - LPAR
CPMPSHTW - VM HiperSockets Write MB/Sec - CPC
CPMPSTMS - VM HiperSockets Message Sent Rate - CPC
CPMHPMSZ - VM HiperSockets Avg Message Size - LPAR
CPMHTMSZ - VM HiperSockets Avg Message Size - CPC
CPMPSPUS - VM HiperSockets Message Failed Rate - LPAR
CPMPSTUB - VM HiperSockets Receive Failed Rate - CP
CPMPSPUB - VM HiperSockets Receive Failed Rate - LPAR
CALCULATIONS:
None
USAGE CONSIDERATIONS:
None
+----------------------------------------------------------------------------------------------------------------------------------+ | C H A N N E L P A T H A C T I V I T Y R E P O R T | | Page nnn| | z/VM System ID SYSA Start 20JULyy:23:59:45.92 Interval 1:00:00.00 | | Release V5R4 End 21JULyy:00:59:45.92 | | CPMF: Extended Mode CSSID: 0 | |--------------------------------------------------------------------------------------------------------------------------------- | | DETAILS FOR ALL CHANNELS | |--------------------------------------------------------------------------------------------------------------------------------- | | Channel Path Utilization(%) Read(MB/Sec) Write(MB/Sec) | | ID Type SHR Part Total Bus Part Total Part Total | | 00 OSD Y 0.00 0.00 0.00 0.00 0.00 0.00 0.00 | | 01 OSD Y 0.00 0.05 0.00 0.00 0.01 0.00 0.09 | | 02 OSD Y 0.01 0.23 0.00 0.00 0.01 0.00 0.01 | | 03 OSD Y 0.00 0.00 0.00 0.00 0.00 0.00 0.00 | | 04 OSD Y 0.00 0.00 0.00 0.00 0.00 0.00 0.00 | | 05 OSE Y 0.00 0.00 0.00 0.00 0.00 0.00 0.00 | | 06 OSE Y 0.00 0.00 0.00 0.00 0.00 0.00 0.00 | | 07 OSE Y 0.00 0.00 0.00 0.00 0.00 0.00 0.00 | | 08 OSE Y 0.00 0.00 0.00 0.00 0.00 0.00 0.00 | | 09 OSD Y 0.00 0.00 0.00 0.00 0.00 0.00 0.00 | | 0A OSD Y 0.00 0.15 0.00 0.00 0.01 0.00 0.00 | | 0B OSA/3270 Y 0.01 0.04 0.00 0.00 0.00 0.00 0.00 | | 0C OSA/3270 Y 0.00 0.01 0.00 0.00 0.00 0.00 0.00 | | 0D OSD Y 0.00 0.00 0.00 0.00 0.00 0.00 0.00 | | 10 OSD Y 0.00 0.00 0.00 0.00 0.00 0.00 0.00 | | 11 OSD Y 0.00 0.00 0.00 0.00 0.00 0.00 0.00 | | 12 OSD Y 0.00 0.00 0.00 0.00 0.00 0.00 0.00 | | 13 OSD Y 0.00 0.84 0.02 0.00 0.62 0.00 0.12 | | 14 OSD Y 0.00 1.74 0.00 0.00 0.00 0.00 0.00 | | 15 OSD Y 0.00 0.00 0.00 0.00 0.00 0.00 0.00 | | 16 OSD Y 0.00 0.00 0.00 0.00 0.00 0.00 0.00 | | 17 OSD Y 0.00 0.00 0.00 0.00 0.00 0.00 0.00 | | 18 OSD Y 0.00 0.00 0.00 0.00 0.00 0.00 0.00 | | 20 FCS Y 0.22 11.47 0.89 0.00 1.81 0.00 1.80 | | 21 FCS Y 0.09 11.80 3.99 0.02 18.00 0.01 5.92 | | 22 FCS Y 0.09 11.81 3.99 0.02 18.02 0.01 5.90 | | 23 FCS Y 0.09 11.80 3.98 0.02 17.96 0.01 5.90 | | 24 FCS Y 0.09 11.79 3.97 0.02 17.97 0.01 5.89 | | 25 FCS Y 0.01 2.45 1.87 0.00 0.00 0.00 10.59 | | 26 FCS Y 0.01 0.50 0.06 0.01 0.25 0.00 0.01 | | 27 FCS Y 1.39 32.28 7.51 0.39 36.67 0.11 5.65 | | 28 FCS Y 0.01 2.27 1.86 0.00 0.00 0.00 10.59 | | 29 FCS Y 1.29 18.38 2.46 0.39 9.24 0.21 2.15 | | 2A FCS Y 0.00 2.23 1.86 0.00 0.00 0.00 10.59 | | 2B FCS Y 1.41 28.00 6.57 0.39 32.08 0.11 4.94 | | 2C FCS Y 0.00 0.00 0.00 0.00 0.00 0.00 0.00 | | 2D FCS Y 1.29 16.77 2.31 0.39 8.98 0.21 1.93 | | 2E FCS Y 0.00 2.37 1.87 0.00 0.00 0.00 10.59 | +----------------------------------------------------------------------------------------------------------------------------------+
Figure 3-21. VM Channel Path Activity Report
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