Dynamic Load Balancer Plus
tm
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Contents
Index
Chapter 15
15
DLB Plus Performance Options
15.1
Tuning Versus Biasing
15.2
Requesting DLB Plus Operation Options
15.2.1
Bias Options
Chapter 16
16
Using DLB Plus with Host-Based Data Caching Systems
16.1
Using DLB Plus with I/O EXPRESS
tm
16.1.1
Adjusting I/O EXPRESS for use with DLB Plus
16.2
Using DLB Plus with SuperCache
tm
16.2.1
Adjusting SuperCache for use with DLB Plus
Chapter 17
17
Fragmentation Prevention Overview
17.1
Description
17.2
Theory of Operation
17.3
Components
17.4
Intercepting File System Requests
17.5
Controlling Fragmentation Prevention Activity
Chapter 18
18
Controlling Fragmentation Prevention Activity
18.1
Command Overview
18.2
The SHOW Command
18.2.1
Showing Fragmentation Prevention Usage System-wide
Chapter 19
19
Benchmarking the Fragmentation Prevention Feature
19.1
The Benchmark Procedure
19.2
Using the Benchmark Procedure
19.2.1
Setting Up to Perform a Benchmark
19.2.2
Creating and Extending without Fragmentation Prevention Enabled
19.2.3
Creating and Extending with Fragmentation Prevention Enabled
19.3
Benchmark Cleanup
Appendix A
Appendix A
DLB Plus Menus and Menu Selections
A.1
The DLB Plus Menus
A.1.1
Master Menu
A.1.2
Summary Analysis Reports Menu
A.1.3
Detail Analysis Reports Menu
A.1.4
Analysis Graphs Menu
A.1.5
Live Lock Analysis Menu
Appendix B
Appendix B
Sample Input and Processing Screens
B.1
Sampling I/O Information
B.2
Consolidating Samples
B.3
Selecting a Previous Sample
B.3.1
Showing Sampled Nodes and Consolidations
Appendix C
Appendix C
DLB Plus Analysis Reports and Graphs
C.1
Summary Reports
C.1.1
Hot File Analysis Report
C.1.2
Files for Data Buffer or Data Caching Report
C.1.3
File Fragmentation Analysis
C.1.4
Analysis by Device Report
C.1.5
I/O Analysis Summary by Image Report
C.1.6
I/O Analysis Summary by User Report
C.1.7
Analysis Summary by PID Report
C.2
Detail Reports
C.2.1
Analysis Detail by Image Report
C.2.2
Analysis Detail by User Report
C.2.3
Analysis Detail by Device Report
C.2.4
Analysis Detail by PID Report
C.2.5
Analysis Detail by File
C.3
Graphs
C.3.1
Graph Analysis Summary by User
C.3.2
Graph Analysis Summary by Image
C.3.3
Rate Analysis Summary by User
C.3.4
Rate Analysis Summary by Image Name
Appendix D
Appendix D
AUTOSAMPLE and Reports
D.1
DLB Plus Analysis AUTO Summary Reports
D.1.1
Starting the AUTOSAMPLE Procedure
Appendix E
Appendix E
Resources Used by DLB Plus
E.1
Resources Used by DLB Plus
E.2
Resources Used by the Fragmentation Prevention Feature
Appendix F
Appendix F
An Installation Example
F.1
Start Up Commands
Appendix G
Appendix G
An Example of Using AUTOGEN
Appendix H
Appendix H
SYSGEN Parameters and DLB Plus Usage
H.1
Parameters
H.1.1
AWSTIME
H.1.2
IOTA
H.1.3
MPW_LOWAITLIMIT
H.1.4
MPW_THRESH
H.1.5
PFRATH
H.1.6
PFRATL
H.1.7
PQL_MPGFLQUOTA
H.1.8
PQL_MWSEXTENT
H.1.9
MMG_CTLFLAGS
H.1.10
QUANTUM
H.1.11
RSRVPAGCNT
H.1.12
SWPOUTPGCNT
H.1.13
WSINC
Appendix I
Appendix I
Answers to Commonly Asked Questions
I.1
DLB Plus Questions and Answers
I.1.1
Determining I/O Counts and Rates
I.1.2
I/O Rates Consolidated across Nodes
I.1.3
Measuring the Success of RMS Global Buffering
I.1.4
DLB Plus Data Directory
I.1.5
Report Generation
I.1.6
Applications and Processes
I.1.7
DLB Plus and I/O EXPRESS Memory Usage
I.1.8
Swapping Processes
I.1.9
Full Page Files
I.1.10
Extending Page Files
I.1.11
Global Pages
I.1.12
Memory Reclamation Facility Conflicts
I.1.13
CPU Bound Processes
I.1.14
Dynamic Parameters
I.1.15
Hard and Soft Page Faults
I.1.16
DLB Plus Monitor System Values
I.2
Fragmentation Prevention Questions and Answers
I.2.1
Using Other Disk Defragmenters
I.2.2
What is the CDSERVER doing
I.2.3
Why are Some Processes Enabled/Disabled
I.2.4
Working with Existing Files that get Extended
I.2.5
Existing Software Products that Intercept File Opens
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