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Types of Cache
108 Sun ONE Directory Server Installation and Tuning Guide • June 2003
Figure 6-1 shows caches foran instance of Directory Server handling three suffixes,
each with its own entry cache. The instance is configured to handle significant disk
activity, placing the transaction log, database, and other files and logs onseparate
disk subsystems as suggested in Chapter 8, “Tuning Logging.”
Figure 6-1 Entry and Database Caches in Context
Database Cache
Each Directory Server instance has one database cache. The database cache holds
pages from the database containing indexes and entries. Each page is not an entry,
but a slice of memory containing a portion of the database. You specify database
cachesize(
nsslapd-dbcachesize). The change to database cache size takes effect
after you restart the server, with database cache space allocated at server startup.
Directory Server Instance
Database Cache
for the instance
Entry Cache
for o=suffix1
(formatted
entries)
Entry Cache
for o=suffix2
(formatted
entries)
Entry Cache
for o=suffix3
(formatted
entries)
Entry pages
from database
Indexes
from database
Operating System
Disk Subsystems
Memory (RAM), Including File System Cache
- Installation and Tuning Guide 1
- Contents 3
- About This Guide 9
- Typographical Conventions 10
- Default Paths and Filenames 10
- About This Guide 11 11
- Suggested Reading 12
- About This Guide 13 13
- Installation 15
- Platform Architectures 18
- Determining What to Install 20
- Determining How to Install 20
- Installing on Solaris Systems 23
- Installing Solaris Packages 24
- Package Description 25
- Installing Required Patches 27
- Configuring Directory Server 28
- Creating Specification Files 29
- Preparing For Installation 34
- Platform Browse 35
- Installing on Windows Systems 38
- Uninstallation 41
- Packages 42
- Compressed Archive 43
- Troubleshooting 46
- Problem Possible Solutions 47
- Before You Upgrade 51
- Upgrading a Single Server 54
- Migrating Existing Data 55
- Variable Value 56
- Preparing the New Master 57
- Upgrading the Consumers 58
- Upgrading a Branch 58
- Adding Additional Servers 59
- Example 4.x Upgrade Scenario 60
- Example 5.x Upgrade Scenario 67
- Upgrading 5.x Servers 67
- 5.x Consumer 5.x Consumer 68
- 5.x Master 5.x Master 68
- 5.x Hub 5.x Hub 68
- 5.2 Consumer5.2 Consumer 70
- 5.2 Hub 5.2 Hub 70
- 5.2 Master 5.2 Master 70
- Top Tuning Tips 73
- Phase Description 74
- Distribute disk activity 77
- Hardware Sizing 79
- Minimum Available Memory 80
- Minimum Local Disk Space 80
- Sizing Physical Memory 81
- Value Description 82
- Chapter 4 Hardware Sizing 83 83
- Sizing Total Memory 84
- Sizing Disk Subsystems 85
- Directory Server Binaries 86
- Event Logging 86
- Transaction Log 87
- Backups and LDIF Files 87
- (UNIX Platforms) Core Files 88
- Space for Administration 88
- Transaction Logs 89
- Databases 89
- Log Files 89
- Disk Subsystem Alternatives 90
- RAID Alternatives 91
- RAID 0, Striped Volume 92
- RAID 1, Mirrored Volume 92
- RAID 1+0 92
- RAID 0+1 92
- RAID Levels 2, 3, and 4 93
- Software Volume Managers 93
- Sizing Network Capacity 94
- Sizing for SSL 94
- Chapter 4 Hardware Sizing 95 95
- Tuning the Operating System 97
- Patching the System 98
- Enforcing Basic Security 98
- Strong Passwords 99
- Keeping Accurate Time 100
- Tuning System Settings 102
- File Descriptors 103
- (HP-UX) Large File Support 103
- (HP-UX) Threads Per Process 103
- Deferred Acknowledgement 104
- Inactive Connections 105
- Incoming Connections 105
- Outgoing Connections 105
- Retransmission Timeout 106
- Sequence Numbers 106
- Tuning Cache Sizes 107
- Database Cache 108
- Entry Cache 109
- Import Cache 110
- File System Cache 111
- Total Aggregate Cache Size 111
- How Searches Use Cache 112
- Base Search Process 113
- How Updates Use Cache 115
- Optimizing For Searches 118
- Optimizing for Updates 121
- Cache Priming and Monitoring 122
- Other Optimizations 123
- Tuning Indexing 125
- Chapter 7 Tuning Indexing 127 127
- Presence Indexes 128
- Equality Indexes 129
- Substring Indexes 130
- Chapter 7 Tuning Indexing 131 131
- Approximate Indexes 132
- International Indexes 132
- Example: Indexing an Entry 132
- Chapter 7 Tuning Indexing 133 133
- Limiting Index List Length 135
- Entry IDs 136
- Chapter 7 Tuning Indexing 137 137
- Tuning Logging 139
- Access Logging 140
- Chapter 8 Tuning Logging 141 141
- Audit Logging 142
- Error Logging 143
- Chapter 8 Tuning Logging 145 145
- Retro Change Logging 146
- Transaction Logging 147
- Chapter 9 149
- Managing Access Control 155
- Configuring Server Plug-Ins 156
- Installed Product Layout 159
- The ServerRoot Directory 160
- The Server Instance Directory 162
- Internal Use Only 164
- Before You Start 165
- Creating a Token 166
- Importing Certificates 168
- Configuring SSL 168
- Installing Sun Cluster HA for 171
- Directory Server 171
- Setting Up Network Resources 173
- Installing the Servers 175
- Configuring the Servers 176
- What You Can Configure 179
- Uninstalling 182
- Index 187 187
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