GPA Manual

Description of GPA Reports
Guardian Performance Analyzer (GPA) Manual—135081
3-13
Cache Performance Analysis
Cache Performance Analysis
This section of the report (Example 3-9) is a table that shows cache block data for each
of the disk volumes in the system. For each volume, the table gives information for each
size of cache block (512 bytes, 1024 bytes, 2048 bytes, and 4096 bytes):
Processor/Disk Configuration Diagram
There are two kinds of report in this subsection. One (Example 3-10) is for the operating
system prior to G02 and the other (Example 3-11) is for the G02 operating system and
later. Both of the diagrams (Example 3-10 and Example 3-11) show system information
in a form that represents the system’s physical configuration. The layout of the diagrams
give a quick overview of how the disk processing load is distributed over the system.
Example 3-9. Cache Performance Analysis
CACHE PERFORMANCE ANALYSIS
1 2 3
LOGICAL | ALLOCATED CACHE | CACHE HIT RATES | REQUEST RATES BY
VOLUME | 512 1024 2048 4096 | 512 1024 2048 4096 | CACHE BLOCK/SECOND
| BLKS BLKS BLKS BLKS | | 512 1024 2048 4096
| | |
$SYSTEM | 24 22 21 64 | 25 84 20 66 | .4 13.2
$NSMS | 24 22 21 64 | 99 | 5.5
$ClO | 24 22 21 64 | 55 58 90 | 4.8
$PROJEC | 24 22 21 64 | 99 | 1.6
$DRIVER | 24 22 21 64 | 42 85 90 | .1 .9
$XPRESS | 24 22 21 64 | 6 99 | .6 .5
$MEAS | 24 22 21 64 | 78 |
$B40 | 24 22 21 64 | 80 |
$X42 | 24 22 21 64 | 85 |
(1) ALLOCATED CACHE: Number of blocks allocated.
(2) CACHE HIT RATES: Percentage of cache hits.
(3) REQUEST RATES BY CACHE BLOCK/SECOND: Number of requests per
second.
Example 3-10. Processor/Disk Configuration Diagram
PROCESSOR/DISK CONFIGURATION DIAGRAM
1
CPU 0 1 2 3
2
TYPE TXP TXP TNSII TNSII
3
BUSY 34.1 66.0 32.7 11.9
4
MMGR 8 PG 58 PG 513 PG 1475 PG
5
CNTRLR] %01 > 1 [CNTRLR] %01 > 3
6
$SYSTEM $NSMS
7
7.2/ 824/ 13 14.7/ 1225/ 5
$D40 $PROJEC
2.6/ 227/ 4 6.3/ 257/ 1
$DRIVER $XPRESS
0.8/ 188/ 1 1.7/ 295/ 1
$D40 $MEAS
0.1/ 84/ 0 0.5/ 209/ 0
$X42
0.5/ 211/ 0