Measure Reference Manual

• The “Time Period” column of the SPLIT display shows the time period of each created TIME-split
data file. All the data records in the file should have a timestamp within that period. For interval
data files, the effective time period is wider by one half of the interval on either side of the
displayed time period.
• The number in the “%” column of the SPLIT display is the size of the output data file relative
to the input data file. When all the data records of the input data file are being split among
a set of output data files, you might expect that the sum of the “%” numbers would add up to
100%, but this is rarely the case. The configuration records (including any journals) are copied
into each split output data file. (In addition, if the input data file is an interval data file, data
records with timestamps that are near the time period boundaries (see note on the “Time
Period” column above) will appear in both adjacent split files.) If the input data file is an
original data file (that is, one created by MEASCOM), the file will contain slack bytes in many
of the data blocks. Because MEASFT eliminates slack bytes before it writes the data records
to the split output data files, the sum of the “%” numbers may be more or less than 100%.
• When generating a report or plot for a data file that has been split using the SPLIT BY TIME
command, you should specify FROM and TO options (within the time period of the TIME-split
data file) in the MEASCOM LIST entity-type, LISTALL entity-type, or LIST PLOT
command to ensure fidelity between Measure reports and plots done on the original data file
with those done on the TIME-split data file.
• If you specify an asterisk (*) as the out-file-set and omit the split-criteria
parameter, MEASFT chooses the number of output data files by dividing the Measure data
file size by 1024 MB (1,073,741,824 bytes) and rounding down. It uses this number or 2,
whichever is larger, as the number of output data files. It then groups the entities to enable as
even a split as possible. For example:
$PERF.CAPAPP 113> MEASFT SPLIT BIGDATA,*
MEASURE File Tool - T9086H01 - (01AUG06) - \YOSPRD
Copyright 2006 Hewlett-Packard Company
SPLIT BIGDATA,*
File $PERF.CAPAPP.BIGDATA was split into the following files:
File Size % Entity(s)
----------------------------------- ---------- ------ ---------------------
$PERF.CAPAPP.ZMSRF000 27391786 2.69 CPU,DISC,NETLINE,
SYSTEM,TMF,SQLPROC,
SQLSTMT,OSSCPU,OSSNS
$PERF.CAPAPP.ZMSRF001 51509214 5.06 DISKFILE
$PERF.CAPAPP.ZMSRF002 86759610 8.52 SERVERNET
$PERF.CAPAPP.ZMSRF003 145165294 14.26 DISCOPEN
$PERF.CAPAPP.ZMSRF004 165726444 16.28 FILE
$PERF.CAPAPP.ZMSRF005 190483848 18.71 PROCESS
$PERF.CAPAPP.ZMSRF006 337090908 33.11 PROCESSH
• If you specify an asterisk (*) after the BY TIME option, MEASFT displays error message 3262.
556 Measure Data File Tool (MEASFT)