GPA Manual
Using GPA Information
Guardian Performance Analyzer (GPA) Manual—135081
4-14
Processor/Disk Configuration Diagram
The Disk Subprocess Analysis also gives you insight into the type of disk activity that is
occurring on each volume. For example, you can see that the first PIN on $DATA has a
very high net message rate, yet its second PIN is only moderately high. This shows that
the first PIN is able to handle many I/O requests, and that these requests, on average, are
relatively inexpensive. $AUDIT contrasts with $DATA in that its second PIN is handling
more messages than its first.
Processor/Disk Configuration Diagram
The processor/disk configuration diagram represents the physical configuration of the
system and lets you see quickly how the disk processing load is distributed over the node
(Example 4-17
and Example 4-18).
In the examples for \NODEA and \NODEB, you can see immediately that CPUs 0
and 2, as the primary processors for all the volumes on the node, are carrying virtually
the entire load on each system. And in the case of \NODEA (Example 4-17
), the
diagram shows the severe memory shortage for CPU 0.
Example 4-16. Disk Subprocess Analysis and Recommendations
Disk Subprocess Analysis and Recommendations
Logical DP PIN#1 PIN#2 PIN#3 PIN#4 PIN#5 PIN#6 PIN#7 PIN#8 NC NP
Disk II Net Net Net Net Net Net Net Net EH EI
Volume SN Msg Msg Msg Msg Msg Msg Msg Msg TN WN
Name KS Rate Rate Rate Rate Rate Rate Rate Rate G S
-------- -- ------ ------ ------ ------ ------ ------ ------ ----- -- --
$AUDIT 4 5.960 8.370 2.530 .390 4
$DATA 3 53.180 4.050 3.150 +1 4
$DATA1 3 .410 -1 2
$SYSTEM 3 2.100 .910 .160 3
$V80A1 3 10.450 .510 .020 3
$V80A2 3 2.730 .070 -1 2
$V80A3 3 11.640 1.770 .190 3
$V80A4 3 17.140 1.300 .120 3
$XL80A1 3 9.390 1.200 .270 3
$XL80A2 3 5.690 .760 .160 3
$XL80A3 3 3.930 .370 .060 3
$XL80A4 3 5.270 .600 .110 3
$XL80B1 3 8.270 1.290 .340 3
$XL80B2 3 9.350 1.180 .290 3
$XL80B3 3 7.080 .880 .180 3
$XL80B4 3 16.400 2.000 .600 +1 4
$XL80C1 3 3.970 .960 .340 3
$XL80C2 3 6.620 .710 .150 3
$XL80C3 3 4.400 .270 .050 3
$XL80C4 3 4.140 .220 .040 3
$XL80D1 3 .390 3
$XL80D2 3 16.920 -1 2
$XL80D3 3 16.910 -1 2
$XL80D4 3 16.900 -1 2
$XL80E1 3 8.300 1.280 .330 3
$XL80E2 3 5.170 .660 .140 3
$XL80E3 3 4.830 .270 .040 3
$XL80E4 3 5.290 .350 .100 3