|
|
|
This report produces a tabular listing of activity on
CP-owned VOLSERs for the duration of the period specified in
the run-time execution parameters. It includes those volumes
that are owned by this system, and those that are shared by
multiple systems in a Cross System Extensions (CSE) complex,
if CSE is in use. In VM, it additionally includes those
volumes that contain mapped minidisks.
INTENDED USE:
Allows analysis of page and spool activity on CP-owned
volumes, including such items as average and maximum slots
used, I/O activity, I/O queuing measures, and
interference from user I/O. This report can be used to
detect when page or spools spaces are approaching
capacity, and bottlenecks due to queuing of I/O or
interference from I/O activity for non-system (user)
activity.
FORMAT:
A tabular report in VOLSER order where each column
represents a different measurement associated with a given
VOLSER:
PAGE SLOTS USED AVG - The average number of page
slots in use on all paging areas defined for this
volume during the reporting period
PAGE SLOTS USED % - The percentage of available page
slots on the volume that the average used figure
above represents
PAGE SLOTS USED MAX - The maximum number of page
slots that were in use on all paging areas defined
for this volume during the reporting period
PAGE SLOTS USED % - The percentage of available page
slots on the volume that the maximum used figure
above represents
PAGE SLOTS USED TIME - The time of day when the
maximum used figure occurred
PAGE I/O READS - The total number of paging read
operations to this VOLSER during the reporting period
PAGE I/O WRITES - The total number of paging write
operations to this VOLSER during the reporting period
SPOOL SLOTS USED AVG - The average number of spool
slots in use on all spool areas defined for this
volume during the reporting period
SPOOL SLOTS USED % - The percentage of available
spool slots on the volume that the average used
figure above represents
SPOOL SLOTS USED MAX - The maximum number of spool
slots that were in use on all spool areas defined for
this volume during the reporting period
SPOOL SLOTS USED % - The percentage of available
spool slots on the volume that the maximum used
figure above represents
SPOOL SLOTS USED TIME - The time of day when the
maximum used figure occurred
SPOOL I/O READS - The total number of spool read
operations to this VOLSER during the reporting period
SPOOL I/O WRITES - The total number of spool write
operations to this VOLSER during the reporting period
I/O QUEUED AVG - The average number of page/spool
I/Os queued to this VOLSER during the reporting
period
I/O QUEUED MAX - The maximum number of page/spool
I/Os queued to this VOLSER during the reporting
period
I/O QUEUED TIME - The time of day when the
maximum queued figure occurred
USER I/O INTERFERENCE AVG - The average number of
times per monitor interval that user I/O interfered
with paging and/or spooling during the reporting
period
USER I/O INTERFERENCE MAX - The maximum number of
times during one monitor interval that user I/O
interfered with paging and/or spooling during the
reporting period
USER I/O INTERFERENCE TIME - The time of day when
the maximum interference figure occurred
An example of this report is provided in Figure 3-17.
INQUIRY ID:
Tabular Report: VMXTX3
DATA SOURCE (File/Timespan):
VMXCPV01 - DETAIL
DATA ELEMENTS USED:
VOLSER - Volume Serial Number
CPVPAGSL - Page Slots in Use on This Volume
CPVPCPSU - Percent Spool Slots Used
CPVPSLOT - Total Page Slots on This Volume
CPVPAGRD - Total Page Reads
CPVPAGWR - Total Page Writes
CPVSPLSL - Spool Slots in Use on This Volume
CPVPCSSU - Percent Page Slots Used
CPVSSLOT - Total Spool Slots on This Volume
CPVSPLRD - Total Spool Reads
CPVSPLWR - Total Spool Writes
CPVIOQCT - Page/Spool I/Os Queued or Active
CPVUSRIO - User I/O Interference Count
CPVPAGAR - Number of Page Areas on Volume
CPVSPLAR - Number of Spool Areas on Volume
CPVSHRD - CSE Shared Volume Indicator
CPVDUMPV - Dump Only Volume Indicator
CALCULATIONS:
As a first step, the maximum values and timestamps are
pulled out of the detail data, and put into a separate
file. As part of this process, the following calculations
are performed for maximum percentage of page/spool used:
MAXPCPAG = 100 * MAXPAGSL / MAXPSLOT;
where MAXPAGSL is the maximum value of CPVPAGSL
encountered, and MAXPSLOT was the value of CPVPSLOT
at the time
MAXPCSPL = 100 * MAXSPLSL / MAXSSLOT;
where MAXSPLSL is the maximum value of CPVSPLSL
encountered, and MAXSSLOT was the value of CPVSSLOT
at the time
The detail data is the read again, and summarized into
another file. Then the following calculations are
performed:
AVGPAGSL = CPVPAGSL / INTERVLS;
AVGSPLSL = CPVSPLSL / INTERVLS;
AVGIOQCT = CPVIOQCT / INTERVLS;
AVGUSRIO = CPVUSRIO / INTERVLS;
USAGE CONSIDERATIONS:
None
---------------------------------------------------------------------------------------------------------------------------------- Detail VM CP Owned Volume Summary Product Manufacturing Corporation INQUIRY: VMXTX3 RUN DATE: 17JUNyy System ID = VM01 Date = 20APRyy P A G E S P O O L --------------------------------------------- ------------------------------------------ I / O USER I/O M S L O T S U S E D I / O S L O T S U S E D I / O Q U E U E D INTERFERENCE - --------------------------- -------------- ----------------------------- ------------ ------------- -------------- VOLSER AVG % MAX % TIME READS WRITES AVG % MAX % TIME READS WRITES AVG MAX TIME AVG MAX TIME + PAGE01 4782 15.9 5197 17.3 9:13 11612 1279836 0 0 0 0.0 0:00 0 0 0 20 8:33 0 0 0:00 + PAGE02 4459 14.9 4869 16.2 9:40 12578 1215908 0 0 0 0.0 0:00 0 0 0 17 8:49 0 0 0:00 + PAGE03 * 4014 13.4 4625 15.4 8:46 11227 1201609 0 0 0 0.0 0:00 0 0 0 19 8:57 0 0 0:00 + PAGE04 4505 15.0 5314 17.7 9:00 11944 1230269 0 0 0 0.0 0:00 0 0 0 20 8:33 0 0 0:00 + PAGE05 4045 13.5 4551 15.2 9:25 12706 1050812 0 0 0 0.0 0:00 0 0 0 0 0:00 0 0 0:00 + PAGE06 4152 13.8 4716 15.7 9:00 12440 1155316 0 0 0 0.0 0:00 0 0 0 20 8:32 0 0 0:00 * @SPOOL1 0 0 0 0.0 0:00 20 4939 25262 19.1 25557 19.3 9:02 12252 5525 0 0 0:00 0 0 0:00 * @SPOOL2 0 0 0 0.0 0:00 0 2260 8077 6.1 8395 6.3 9:35 14884 6099 0 0 0:00 0 0 0:00 + VMEPG1 40390 29.9 42093 31.2 14:45 12600 13854 0 0 0 0.0 0:00 0 0 0 5 14:49 0 0 0:00 + VMEPG2 * 46099 34.1 47551 35.2 14:45 12066 11740 0 0 0 0.0 0:00 0 0 2 24 14:33 0 1 14:29 > VMEPG3 42216 31.3 43624 32.3 14:27 14480 13333 130860 85.5 130860 85.5 14:27 0 0 0 0 0:00 0 1 14:33 + VMEPG4 38198 28.3 40000 29.6 14:53 13782 14870 0 0 0 0.0 0:00 0 0 0 1 14:37 0 0 0:00 * VMESP0 0 0 0 0.0 0:00 693 62 270023 67.4 272556 68.0 14:47 9106 10442 0 0 0:00 0 0 0:00 * VMESP1 0 0 0 0.0 0:00 43 21 141251 49.8 141995 50.1 14:45 5852 2897 0 0 0:00 23 118 14:55 * VMESP2 0 0 0 0.0 0:00 0 44 155143 38.7 163943 40.9 14:47 4912 17035 0 0 0:00 0 0 0:00 + XAPG01 2918 9.7 3729 12.4 9:41 7883 860511 0 0 0 0.0 0:00 0 0 0 15 9:05 0 0 0:00 + XAPG02 4252 14.2 4669 15.6 9:40 11250 1233626 0 0 0 0.0 0:00 0 0 0 13 9:24 0 0 0:00 + XAPG03 3665 12.2 4098 13.7 9:40 11866 999858 0 0 0 0.0 0:00 0 0 0 0 0:00 0 0 0:00 + XAPG04 3749 12.5 4405 14.7 8:45 9962 1122178 0 0 0 0.0 0:00 0 0 0 19 9:37 0 0 0:00 ---------------------------------------------------------------------------------------------------------------------------------- Column 1: * = SPOOL only, + = PAGE only, $ = no Page or Spool areas on volume 2: > = Spool space reserved for DUMP only 3: @ = CSE shared volume indicator 11: * = Mapped Minidisk(s) on volume
Figure 3-17. Detail VMX CP-Owned Volume Summary
| Copyright © 2012 CA. All rights reserved. | Tell Technical Publications how we can improve this information |