Detail VMX User Consumption Report (by User)

Detail VMX User Consumption Report (by User) report produces a tabular listing of summarized resource consumption ordered by time.
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The data is summarized over the reporting interval specified when the report is executed. The period of time covered by the report and the user or users reported are also specified as run-time execution parameters.
Intended use
To allow analysis of resource consumption by individual users during the day. It can be used, for example, to detect users who are putting an inordinate load on the system, providing the basis for further analysis. This report is useful for monitoring the resource consumption of individual LINUX guests running under z/VM.
Format
A tabular listing that contains one line of information for each report interval (from the execution parameters) for the user logged on to the system during the reporting period. In addition to the TIME, the following columns are shown on the report:
COUNT
The number of monitor intervals in which information was recorded for this user. For users running multiple virtual CPUs, the data for all CPUs is summarized together to provide data for the entire virtual machine.
CPU USAGE TOTAL
The total CPU time charged to this user over the reporting period. This includes both time spent in emulation mode and time spent by CP on behalf of this user.
CPU USAGE VIRT
The total CPU time used by this user for productive work (in emulation mode) during the reporting period. It does not include the time spent by CP on behalf of this user.
CPU USAGE RATE
The rate of CPU usage for this user, derived as indicated below in the calculations section.
WSS PAGES AVG
The average working set size, in pages, for this user during the reporting period.
WSS PAGES MAX
The maximum working set size, in pages, for this user during the reporting period.
VIRTUAL I/O TOTAL
The total number of I/O operations to virtual devices for this user during the reporting period.
VIRTUAL I/O RATE
The rate of virtual I/O operations for this user, derived as indicated below in the calculations section.
SPOOL READS and WRITES
The total number of spool reads and writes performed by this user during the reporting period.
PAGE READS and WRITES
The total number of page reads and writes for this user during the reporting period.
An example of this report is shown in the
Detail VMX User Consumption Report (by User)
sample.
Inquiry ID
  • Tabular Report: VMXTXC
D
ata Source (File/Timespan):
VMXVXU01 - DETAIL
Data elements used
USER
User Identification
INTERVLS
Number of Recording Intervals
VXUTTIME
Total CPU Time Used
VXUVTIME
Virtual CPU Time Used
VXUSPRIO
Spool Read I/Os Issued
VXUSPWIO
Spool Write I/Os Issued
VXUPGRIO
Page Read I/Os Issued
VXUPGWIO
Page Write I/Os Issued
Calculations
The maximum working set size MAXWSS, is extracted from field VXUESWSS and then the various elements to be reported on are summarized across the user specified reporting period. The following computations are then performed to obtain the CPU consumption rate (CPURATE), the average working set size (AVGWSS), the virtual I/O total (VIOTOTAL), and the virtual I/O rate (VIORATE):
CPURATE = VXUTTIME / DURATION; AVGWSS = VXUESWSS / INTERVLS; VIOTOTAL = SUM(VXUCONIO, VXUDASIO, VXUVURIO, VXUCTCIO, VXUMSCIO); VIORATE = VIOTOTAL / DURATION;
Usage considerations
For virtual machines that run with more than one virtual CPU (such as an MVS guest), data for all defined virtual CPUs are summarized to provide a picture of the whole virtual machine over the specified reporting interval. A virtual machine with more than one virtual CPU defined can absorb more CPU time than the duration of the reporting period because it can run on several real CPUs concurrently. This will be reflected in a CPU Usage Rate of greater than 1. The first sample report illustrates this case.

Detail VMX User Consumption Reports (by User) Sample 1

---------------------------------------------------------------------------------------------------------------------------------- VM User Consumption Reported
Broadcom
Production Complex INQUIRY: VMXTXC RUN DATE: 14DECyy System: VMXA Date: THURSDAY, DECEMBER 13, yyyy Userid: MVS08 ---------------------------------------------------------------------------------------------------------------------------------- C P U U s a g e WSS Pages Virtual I/O S p o o l P a g e ------------------------ ------------- ------------------ ----------------- ---------------- Time Count Total Virt Rate Avg Max Total Rate Reads Writes Reads Writes ---------------------------------------------------------------------------------------------------------------------------------- 9:00:00 15 768.10 643.65 0.853 0 0 178,482 198 0 0 0 0 9:15:00 15 870.01 746.64 0.967 0 0 177,910 198 0 0 0 0 9:30:00 15 835.97 714.32 0.929 0 0 171,897 191 0 0 0 0 9:45:00 15 849.65 752.05 0.944 0 0 145,845 162 0 0 0 0 10:00:00 15 954.25 830.14 1.060 0 0 179,900 200 0 0 0 0 10:15:00 15 1257.32 1064.64 1.397 0 0 301,663 335 0 0 0 0 10:30:00 15 1213.69 1042.87 1.349 0 0 264,515 294 0 0 0 0 10:45:00 15 1262.80 1085.79 1.403 0 0 277,434 308 0 0 0 0 11:00:00 15 1182.99 1006.48 1.314 0 0 236,061 262 0 0 0 0 ----------------------------------------------------------------------------------------------------------------------------------

Detail VMX User Consumption Reports (by User) Sample 2

---------------------------------------------------------------------------------------------------------------------------------- VM User Consumption Reported
Broadcom
Production Complex INQUIRY: VMXTXC RUN DATE: 14DECyy System: VMXA Date: THURSDAY, DECEMBER 13, yyyy Userid: NA1LH13 ---------------------------------------------------------------------------------------------------------------------------------- C P U U s a g e WSS Pages Virtual I/O S p o o l P a g e ------------------------ ------------- ------------------ ----------------- ---------------- Time Count Total Virt Rate Avg Max Total Rate Reads Writes Reads Writes ---------------------------------------------------------------------------------------------------------------------------------- 9:00:00 1 0.00 0.00 0.000 70 70 0 0 0 0 0 0 9:15:00 15 135.01 133.17 0.150 319 551 2,453 3 29 0 0 0 9:30:00 15 166.99 165.14 0.186 465 662 1,997 2 8 0 0 0 9:45:00 15 179.99 177.75 0.200 402 655 1,857 2 4 0 0 0 10:00:00 15 233.75 231.21 0.260 460 569 2,244 2 20 0 0 0 10:15:00 15 137.26 135.39 0.153 446 575 1,303 1 11 0 0 0 10:30:00 15 114.44 113.02 0.127 377 518 1,109 1 9 0 0 0 10:45:00 15 125.26 123.89 0.139 511 528 670 1 0 0 0 0 ----------------------------------------------------------------------------------------------------------------------------------