Auxiliary Storage Report

The Auxiliary Storage Report provides information about the I/O activity of page data sets, and data constants for the Auxiliary Storage Manager.

The Auxiliary Storage Report is produced by using the AUXSTOR Analyzer control statement. The data for this report is obtained by using the ASMDATA and PAGING Extractor control statements.

The report is divided into these sections:

Cross Reference
This section contains general information about the page data sets, and the devices on which they reside.
Page Data Set Data
This section lists more detailed information about the page data sets, such as start I/O rates and slots in use.
Page Data Set Slot Count
This section summarizes local page data set slot usage.
SCM Slot Count
This section summarizes storage class memory (SCM) or flash memory slot usage.

Note

The PAGING Extractor control statement must have been defined to the Extractor control statement set when data was collected for the reporting period; otherwise, this report section is not produced. The PAGING statement causes the Extractor to collect SMF type 71 records, which are required for this section of the report.

The following figure shows a sample of the Auxiliary Storage Report.

PRODUCED BY CMF ANALYZER (v.r.mm RSL yymm )           AUXILIARY STORAGE REPORT                         RPTSEQ     3 PAGE     11
BMC SOFTWARE, INC.                                           XYZ COMPANY                                REPORT DATE: DD MMM YY 1.47
ACTL 10 AUG 14 14.16.19 11 AUG 14 01.45.00                  HQ LOCATION                                SYSTEM ID: SJSD     Z v.rr.n

BASED ON REC TYPE/# RECS/# SAMPLES/REC HOURS: 240-2/46/20.6K/11.48 240-9/46/20.6K/11.48 75-1/414/20.6K/11.48 71-1/46/689/11.48
------------------------------------------------------ CROSS REFERENCE SECTION --------------------------------------------------
                  INDEX         ADDR      DEVICE TYPE        VOLUME   VIO ASM SERVICE DATA SET NAME
                                                                           BURST MSEC
                    1           10D17        33903           ESJPG1                     PAGE.ESAJ.COMMON
                    2           1A319        33903           ESJPG4   YES               PAGE.ESAJ.LOCAL1
                    3           10D17        33903           ESJPG1   YES               PAGE.ESAJ.LOCAL3
                    4           10D0B        33903           ESJPG2   YES               PAGE.ESAJ.LOCAL4
                    5           10D17        33903           ESJPG1                     PAGE.ESAJ.PLPA

------------------------------------------------------ PAGE DATA SET DATA SECTION -----------------------------------------------
                                                                                   DATASET PERCENT    PERCENT      TOTAL   TOTAL
                         AVG I/O AVG XFER PAGES PER BURST    PAGES    TOTAL SSCH SSCH   DATA SET SLOTS-IN-USE    SLOTS   BAD
      INDEX   CLASS     TIME MSEC TIME MSEC    AVG     MAX TRANSFERRED   ISSUED   PER SEC IN USE    AVG    MAX    ALLOC   SLOTS
        1     SCM          ---        0.69     1.7        0       2914      1690       0.0    0.0     0.0    0.0 33554432       0
        2     COMMON       ---       13.91     3.3        6        144        44       0.0    0.0     0.1    0.1    53999       0
        3     LOCAL         1.36      0.00     0.0        0          0         0       0.0    0.0     0.0    0.0   134999       0
        4     LOCAL         1.36      0.00     0.0        0          0         0       0.0    0.0     0.0    0.0   134999       0
        5     LOCAL         1.36      0.00     0.0        0          0         0       0.0    0.0     0.0    0.0    53999       0
        6     LOCAL         1.36      0.00     0.0        0          0         0       0.0    0.0     0.0    0.0   179999       0
        7     LOCAL         1.36      0.00     0.0        0          0         0       0.0    0.0     0.0    0.0   179999       0
        8     LOCAL         1.36      0.00     0.0        0          0         0       0.0    0.0     0.0    0.0   179999       0
        9     PLPA         ---        0.00     0.0        0          0         0       0.0    0.0    87.4   87.3    17999       0
              TOTAL                                               3058      1734                                 34490424       0
-------------------------------------------------- PAGE DATA SET SLOT COUNT SECTION ---------------------------------------------
                                 AVAILABLE       %         VIO       %     NON-VIO       %      BAD        TOTAL
                     MINIMUM -     863,994   100.0           0     0.0           0     0.0        0      863,994
                     MAXIMUM -     863,994   100.0           0     0.0           0     0.0        0      863,994
                     AVERAGE -     863,994   100.0           0     0.0           0     0.0        0      863,994
------------------------------------------------------ SCM SLOT COUNT SECTION ------------------------------------------------------
                                           AVAILABLE      %       IN-USE      %     BAD        TOTAL
                               MINIMUM - 33,538,667 100.0       15,689      0       0   33,554,432
                               MAXIMUM - 33,538,743 100.0       15,765      0       0   33,554,432
                               AVERAGE - 33,538,668      0       15,764      0       0   33,554,432

Cross Reference Section field descriptions

Each field in the Cross Reference Section of the Auxiliary Storage Report is described in the following table.

Field	Description
INDEX	Internally generated index number for referencing data sets in this report
ADDR	Address of the device on which the data set resides
DEVICE TYPE	Type of the device on which the data set resides
VOLUME	Serial number of the volume on which the data set resides
VIO	Word YES is displayed if the local page data set accepts VIO pages
ASM SERVICE BURST PAGES	Number of pages per I/O burst
DATA SET NAME	Name of the data set in question

Page Data Set Data Section field descriptions

Each field in the Page Data Set Data Section of the Auxiliary Storage Report is described in the table below.

Field	Description
INDEX	index number corresponding to the data sets in the Cross Reference section of this report The index is followed by an asterisk (*) if the data set was brought online during the sampling session.
CLASS	page space type, which can be one of the following values: PLPA – pageable link pack area pages COMMON – common system area pages LOCAL – private area (address space) pages SWAP – address space pages that were swapped out SCM – Storage Class Memory, also known as flash memory NOGOOD – warning that the data set is unusable for paging or swapping by the ASM; the page data set must be reformatted Note If marked with an asterisk (*), the volume for the page data set came online during the Extractor session.
AVG I/O TIME MSEC	average time in milliseconds to perform an I/O operation transferring a single page This field is applied only to LOCAL page data sets.
AVG XFER TIME MSEC	average time in milliseconds to transfer a page This value differs from AVG I/O TIME, in that it is the average of all of the paging I/O rather than the average of samples that transferred single pages. A value greater than AVG I/O TIME can indicate a high level of contention for access to the data set.
PAGES PER BURST - AVG	average number of pages that were transferred to the page data set in one I/O burst
PAGES PER BURST - MAX	maximum number of pages that were transferred to the page data set in one I/O burst
PAGES TRANSFERRED	number of pages that were transferred between storage and page data set
TOTAL SSCH ISSUED	total number of SSCH requests by the ASM for the indicated data set
DATASET SSCH PER SEC	rate at which SSCH requests were issued to the data set
PERCENT DATA SET IN USE	percentage of time that the data set was observed to be in use by the ASM (an IORB for that data set was busy)
PERCENT SLOTS-IN-USE - AVG	average percentage of total slots allocated that were used for this data set
PERCENT SLOTS-IN-USE - MAX	maximum percentage of total slots allocated that were used for this data set
TOTAL SLOTS ALLOC	total number of slots that were allocated for this data set
TOTAL BAD SLOTS	total number of slots that encountered permanent I/O errors on this data set

Page Data Set Slot Count Section field descriptions

The table below describes each field in the Page Data Set Slot Count Section of the Auxiliary Storage Report.

Minimum, maximum, and average values are shown for each field in this section of the report. Each row is labeled with its appropriate value description.

Field	Description
AVAILABLE %	minimum, maximum, and average number of page data set slots that are available for use (which do not contain any data pages) This value is also expressed as a percentage of the total number of local page data set slots.
VIO %	minimum, maximum, and average number of page data set slots that contain pages for VIO data sets This value is also expressed as a percentage of the total number of local page data set slots.
NON-VIO %	minimum, maximum, and average number of page data set slots that contain pages for virtual storage associated with an address space This value is also expressed as a percentage of the total number of local page data set slots.
BAD	minimum, maximum, and average number of page data set slots that are unusable The Auxiliary Storage Manager (ASM) encountered a permanent I/O error accessing it.
TOTAL	minimum, maximum, and average number of all local page data set slots

SCM Slot Count Section field descriptions

The table below describes each field in the SCM (Storage Class Memory) Slot Count Section of the Auxiliary Storage Report.