When a system is running slowly and performance is degrading
it is difficult to know what is the cause. Whether it is lack
of memory or a particular application, there are ways to diagnose
the situation. This article provides performance monitoring tips,
some concepts like Intimate Shared Memory (ISM) and priority paging,
web sites for further reading, and some diagnostic suggestions,
like how to read vmstat output. The emphasis is on Solaris 2.6
and Solaris 7.
CONTENTS
I. PERFORMANCE MONITORING
A. SE Toolkit
B. Sun Performance Information
C. Looking for a Performance Bottleneck?
1. Using the vmstat Command
2. About Free Memory
3. Sample Quick Performance Script
II. TOPICS ON KERNEL PARAMETERS AND TUNING THE SOLARIS KERNEL
A. Adrian Cockcroft's Perspective on Tuning
B. Understanding 64-bit Sizing and Capacities
1. Definitions and Concepts
2. Performance
3. Sample Commands
C. Commonly Asked About Kernel Parameters
1. KAIO and MAXASYNCHIO
2. About File Descriptors and Their Limitations
2a. Using select() library function
3. Adjusting Pseudo-terminal Devices (ptys)
D. Performance and Database Tuning
1. Priority Paging
2. Intimate Shared Memory (ISM)
2a. ISM Defaults
2b. Swap Configurations Related to Shared Memory
3. Interprocess Communication Parameters (IPC)
3a. Shared Memory Parameters
3b. Semaphore Parameters
3c. Message Queue Parameters
III. APPENDIX
A. Sample Quick Performance Script
IV. REFERENCES
A. IPC articles in SunSolve SRDBs and InfoDoc Collections
B. More SunWorld Online Articles
C. New Book on Oracle8 and Unix Performance Tuning
D. What Are The Kernel Patch Numbers?
==========================
I. PERFORMANCE MONITORING
A. SE Toolkit
There are commercial products for performance monitoring
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