Contents
Server Memory Administration Guide
Documentation Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1
Understanding Server Memory
Introduction to NetWare Memory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Directory Cache Buffers and File Cache Buffers . . . . . . . . . . . . . . . . . . . . . . . . 10
Logical Memory Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Protected Address Spaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Protected Address Spaces and Logical Memory Addressing . . . . . . . . . . . . . . . . . 12
Modules Not Allowed in Protected Address Spaces . . . . . . . . . . . . . . . . . . . . . . 13
Virtual Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2
Optimizing Server Memory
Assessing Server RAM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Ensuring That Devices Can Access Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Determining Which Processes Use Too Much Memory . . . . . . . . . . . . . . . . . . . . . . 19
Tuning Server Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Tuning File Cache . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Tuning Directory Cache for the Traditional File System . . . . . . . . . . . . . . . . . . . . 24
Using Virtual Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Using Swap Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Responding to Disk Thrashing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Optimizing Garbage Collection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
3
Managing Server Memory
Server Memory Management Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Using Protected Address Spaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Loading Protected Address Spaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Unloading Protected Address Spaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Viewing Information about Address Spaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
7
9
17
33
5
Contents
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