TPDC Manual (G06.24+)

Using the SPAM Performance Data Charts and
Reports
Tandem Performance Data Collector (TPDC) Manual—526357-001
5-61
Disc Subsystem Activity (DSCREPT)
Disc Subsystem Activity (DSCREPT)
This 132-column report shows physical disk and disk cache activity. It includes:
•
Requests per second
•
Internal queue lengths and times
•
Percentage of requests that hit record or file locks
•
Cache activity per request
•
Primary disk process ID
•
Disk controller numbers
•
Disk busy times
•
Physical disk I/Os per request
This report uses the DGLOBAL, DISCINFO, and DISC entities.
Parameters used are:
•
LID—specifies the Measure Load ID
•
EXCLUDE—specifies a value under which to exclude the number of requests per
second
•
SECTION—specifies the report section number
The report is sorted by volume name and logical device number.
DISC PROCESS Activity Report for System \CSO (Release D20)
----------------------------
$Volume LDV PC:BC (headings continued below)
======== === -----
$AUDIT 25 02:03 (data continued below)
$DATA 15 01:02
$DATA1 26 02:03
. . .
$USERS 27 02:03
$WORK 8 00:01
<---MILLISECONDS/REQUEST---> <--------RESOURCE BUSY (%)--------> <--PER SEC-->
Rqsts/ <-Q/SERVICE(MSECS)-> <-Disc Process(es)-> <-Disc Process(es)-> <---Discs---> Swap Free
Second Extrnl Intrnl Total Primry Backup Total Discs Primry Backup Total Primry Mirror I/Os I/Os
------ ------ ------ ----- ------ ------ ----- ------ ------ ------ ----- ------ ---- ---- -----
.3 5.0 10.8 15.7 3.8 .4 4.2 6.3 .1 .0 .1 .1 .1 .0 .0
1.3 .9 2.9 3.8 2.1 .1 2.1 1.7 .3 .0 .3 .2 .0
.7 1.5 3.0 4.5 2.1 .1 2.2 2.0 .2 .0 .2 .1 .0
. . .
5.6 2.3 7.2 9.6 2.9 .2 3.0 3.8 1.6 .1 1.7 2.1 .1 .1
.9 1.1 2.8 3.8 1.9 .1 2.0 1.8 .2 .0 .2 .2 .0
------ ------ ------ ----- ------ ---- ---- -----
------ ------ ------ ----- ------ ---- ---- -----
30.4 7.9 .5 8.4 9.9 .9 .4 .2