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This report produces a tabular listing of summarized resource
consumption ordered by time. 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 Figure 3-11.
INQUIRY ID:
Tabular Report: VMXTXC
DATA 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.
---------------------------------------------------------------------------------------------------------------------------------- VM User Consumption Reported CA 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 ----------------------------------------------------------------------------------------------------------------------------------
---------------------------------------------------------------------------------------------------------------------------------- VM User Consumption Reported CA 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 ----------------------------------------------------------------------------------------------------------------------------------
Figure 3-11. Detail VMX User Consumption Report (by User)
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