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Guardian Performance Analyzer (GPA) User Guide – (544541-006) Page 99 of 131
Example 4-21. Disk Volume Performance Analysis for \NODEB After Primary
Changes
DISK VOLUME PERFORMANCE ANALYSIS
VOLUME UNT CPU(S) CTL REQUEST AVG PROCESS REQUEST CACHE CACHE
NAME NOS NUM QUEUE DEVICE BUSY% RATE HIT CALLS PER
P:M PC:BC TIME BUSY% /SECOND RATE% REQUEST
-------- --- ----- --- ------- ------ ------- ------- ----- ---------
$AUDIT 0:1 0: 1 %12 14.41 34.40 4.05 28.12
$DATA 2:3 0: 1 %10 4.35 15.55 5.41 67.44 99.4 .2
$DATA1 2:3 0: 1 %12 21.31 0.83 0.07 0.03 1.0
$SYSTEM 0:1 0: 1 %10 13.79 4.71 0.62 4.79 94.2 .9
$V80A1 0: 3: 2 %30 6.23 5.23 1.89 11.21 91.8 1.9
$V80A2 1: 3: 2 %30 12.21 3.02 0.48 2.09 71.9 1.5
$V80A3 2: 2: 3 %32 9.53 9.29 3.72 15.54 90.0 1.5
$V80A4 3: 2: 3 %32 5.51 7.20 2.86 19.21 90.7 1.4
$XL80A1 0:1 2: 3 %10 13.33 16.13 3.72 12.25 92.6 2.7
$XL80A2 2:3 2: 3 %10 20.29 17.59 2.78 7.52 87.0 2.7
$XL80A3 0:1 2: 3 %12 23.45 14.04 1.96 4.40 84.2 2.7
$XL80A4 2:3 2: 3 %12 19.44 14.63 2.50 6.03 86.8 2.8
$XL80B1 0:1 1: 2 %10 18.42 20.71 3.39 11.43 86.0 2.2
$XL80B2 2:3 1: 2 %10 15.19 18.51 3.04 12.96 85.8 1.9
$XL80B3 0:1 2: 1 %12 17.29 16.63 2.66 9.23 85.5 2.1
$XL80B4 2:3 2: 1 %12 9.18 17.04 4.19 21.44 91.0 1.4
$XL80C1 0:1 3: 0 %10 11.31 14.79 4.20 12.00 93.2 3.0
$XL80C2 2:3 3: 0 %10 9.17 12.32 2.89 10.43 92.9 3.0
$XL80C3 0:1 0: 3 %12 15.51 10.52 1.96 5.94 90.5 3.5*
$XL80C4 2:3 0: 3 %12 15.18 11.01 2.06 4.33 88.8 3.0
$XL80D1 4:5 0: 3 %30 0.00 1.21 0.01 0.00 1.0
$XL80D2 6:7 3: 0 %30 4.03 1.29 0.05 0.00 18.2*
$XL80D3 0:1 3: 0 %32 3.25 1.27 0.06 0.00 5.5*
$XL80D4 2:3 3: 0 %32 4.01 1.25 0.06 0.00 3.2*
$XL80E1 0:1 2: 1 %30 18.37 20.34 3.27 11.23 86.9 2.3
$XL80E2 2:3 2: 1 %30 21.44 16.78 2.45 6.05 85.1 2.8
$XL80E3 0:1 1: 2 %32 11.92 8.55 1.89 5.56 90.7 2.9
$XL80E4 2:3 1: 2 %32 14.30 12.03 2.37 6.04 90.5 3.1*
In the Disk Volume Performance Analysis (Example 4-21) under the CPU(S) column,
volumes $XL80B1 and $XL80B2 show the primary and backup processor as CPU 1
and CPU 2 respectively. Before the primary change, the location of the primary and the
backup processes were reversed. The asterisks after the number of cache calls per
request call your attention to levels greater than 3.1, and are considered by GPA to be
excessive. Files with index levels greater than 2 and large block writes (for example,
writes to an audit file) often contribute to this threshold being exceeded.
The Processor/Disk Configuration Diagram also changes. By comparing Example 4-22
with Example 4-23 you can see that the primary disk process, $XL80B1 and $XL80B2,
on CPU2 have been moved to CPU1.
- (GPA) User Guide 1
- Document History 2
- Table of Contents 3
- List of Figures and Tables 7
- What’s New in This Manual 10
- About This Manual 11
- Notation Conventions 12
- …" 13
- Notation for Messages 16
- Section 1: Introducing GPA 19
- GPA Benefits and Features 20
- How GPA Works 21
- GPAH GPAG 22
- OBEYTUNE 22
- Standard Report Sections 24
- Optional Report Sections 25
- Exclude File 27
- File Specifications 28
- GPA Requirements 29
- Section 2: Running GPA 30
- Running Measure 32
- Running GPA 33
- Caution 34
- The GPA Pre-Requisites 35
- Example 36
- The GPA Runtime Parameters 38
- The GPA Procedure 40
- GPA Error Messages 42
- GPA Standard Report 45
- Node Characteristics 46
- Disk Volume Performance 48
- System Performance Score 51
- Processor Load Balance Chart 54
- Processor Performance Chart 56
- 60
- IPC Traffic Analysis 65
- GPA Analysis Statements 69
- GPA Optional Report 70
- Summary Section 72
- Detail Section 74
- System Performance Summary 76
- Cache Performance Analysis 92
- After Primary Changes 97
- Primary Changes 100
- Changes 101
- [Back to TOC] 101
- Process Move Recommendations 102
- Report Considerations 102
- Class for \NODEC 113
- Implementing GPA Tuning 114
- Recommendations 114
- Reports 115
- CPU Failure Simulation 121
- Disk Cache Change Analysis 125
- CPU Cache Change Analysis 126
- Error Reports 127
- Glossary 128
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