Detail VMX Percent Channel Busy

Detail VMX Percent Channel Busy report produces a graph of the average percentage of channels busy during a user-defined reporting period.
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Each bar of the graph represents the percentage of channels busy for a given channel path ID.
Intended use
Allows analysis of the channel subsystem for purposes of performance tuning and capacity control. This report might be used to identify periods of poor system performance due to an overloaded channel, or might be monitored over time to see how channel workload might be shifting.
Format
A horizontal bar chart of the percentages of channels busy for each CHPID (Channel Path ID). Only channel paths that had some activity are displayed on the graph.
An example of this report is shown in the Detail VMX Percent Channel Busy figure.
Inquiry ID
  • Color Graphics: VMXCX2
  • Printer Graphics: VMXPX2
Data Source (File/Timespan):
VMXCHC01 - DETAIL
Data elements used
CHPID
- Channel Path ID
CHCPCBSY
- Percent CHPID Busy
Calculations
The information is summarized across the user-specified time period, and only active CHPIDs are selected. No other calculations are performed.
Usage considerations
The Channel Path Contention Data File (VMXCHC) is created from the 0/09 monitor records. With the introduction of z990 processor, the 0/09 no longer contains valid channel path information. It is recommended that the 0/18 or 0/20 monitor records be used for valid channel path information.
See report VMXLS1 (VM Channel Path Load Analysis).

Detail VMX Percent Channel Busy Report Sample

Detail VMX Percent Channel Busy ABC Corporation INQUIRY: VMXPX2 RUN DATE: 23JUNyy ------------------------------------------------------ SYSID=VM1 DATE=26MAYyy ------------------------------------------------------ Channel Path ID Percent Busy Mean | 41 |>>>>>> 5.58 % 43 |>>>>>>>>>>>>>>>>>>>>>>>>> 24.79 % 44 |>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 44.70 % 45 |>>>>>>> 7.07 % 47 |>>>>>>>>>>>>>>>>>>>>>>>>>>>> 28.19 % 48 |> 1.33 % 49 |>>>>>> 5.98 % 4A |>>>>>>>>>>> 11.08 % 4B | 0.04 % 4C |>>>>> 5.25 % 4E |>>>>> 4.61 % 4F |>>>>>>>>>>>>>> 13.79 % 50 |>>>>>>>>>> 9.83 % 51 |>>>>>> 6.06 % 52 | 0.04 % 53 |>>>>>>>>>>>>>>>>>>>>>>>>> 25.20 % 54 |>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 45.63 % 55 |>>>>>>>> 7.72 % 57 |>>>>>>>>>>>>>>>>>>>>>>>>>> 25.56 % 58 |> 1.09 % 59 |>>>>>>> 6.55 % 5A |>>>>>>>>>>>>> 12.74 % 5B |> 1.05 % 5C |>>>>>>>>>>>>>> 13.51 % 5D |>>>>>>>>>>> 11.36 % 5E |>>>>>>>>>>>>>>>>>> 17.55 % 5F |>>>>>> 5.98 % 60 |>>>>>>>>>> 9.95 % 61 | 0.04 % 62 |>>>>>>> 7.32 % 63 | 0.44 % 64 |>>>>>>> 7.11 % 65 |>>>>>>>> 8.29 % 66 |>>>>>>>> 8.21 % 68 |>>>>>>>>> 8.65 % 69 |> 0.52 % 6A |>>>>>>>> 7.60 % 6B |>>>>>>>> 8.25 % 6C |>>>>>> 5.66 % 6E |>>>>>>>>> 8.98 % | ----------+---------+---------+---------+---------+---------+---------+---------+---------+---------+ 10.00 % 20.00 % 30.00 % 40.00 % 50.00 % 60.00 % 70.00 % 80.00 % 90.00 % 100.00 % Percent Busy