1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
|
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<HTML
><HEAD
><TITLE
>Performance Tips</TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK
REV="MADE"
HREF="mailto:pgsql-docs@postgresql.org"><LINK
REL="HOME"
TITLE="PostgreSQL 9.1.15 Documentation"
HREF="index.html"><LINK
REL="UP"
TITLE="The SQL Language"
HREF="sql.html"><LINK
REL="PREVIOUS"
TITLE="Locking and Indexes"
HREF="locking-indexes.html"><LINK
REL="NEXT"
TITLE="Using EXPLAIN"
HREF="using-explain.html"><LINK
REL="STYLESHEET"
TYPE="text/css"
HREF="stylesheet.css"><META
HTTP-EQUIV="Content-Type"
CONTENT="text/html; charset=ISO-8859-1"><META
NAME="creation"
CONTENT="2015-02-02T21:03:01"></HEAD
><BODY
CLASS="CHAPTER"
><DIV
CLASS="NAVHEADER"
><TABLE
SUMMARY="Header navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TH
COLSPAN="5"
ALIGN="center"
VALIGN="bottom"
><A
HREF="index.html"
>PostgreSQL 9.1.15 Documentation</A
></TH
></TR
><TR
><TD
WIDTH="10%"
ALIGN="left"
VALIGN="top"
><A
TITLE="Locking and Indexes"
HREF="locking-indexes.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="10%"
ALIGN="left"
VALIGN="top"
><A
HREF="sql.html"
ACCESSKEY="U"
>Up</A
></TD
><TD
WIDTH="60%"
ALIGN="center"
VALIGN="bottom"
></TD
><TD
WIDTH="20%"
ALIGN="right"
VALIGN="top"
><A
TITLE="Using EXPLAIN"
HREF="using-explain.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><DIV
CLASS="CHAPTER"
><H1
><A
NAME="PERFORMANCE-TIPS"
></A
>Chapter 14. Performance Tips</H1
><DIV
CLASS="TOC"
><DL
><DT
><B
>Table of Contents</B
></DT
><DT
>14.1. <A
HREF="using-explain.html"
>Using <TT
CLASS="COMMAND"
>EXPLAIN</TT
></A
></DT
><DT
>14.2. <A
HREF="planner-stats.html"
>Statistics Used by the Planner</A
></DT
><DT
>14.3. <A
HREF="explicit-joins.html"
>Controlling the Planner with Explicit <TT
CLASS="LITERAL"
>JOIN</TT
> Clauses</A
></DT
><DT
>14.4. <A
HREF="populate.html"
>Populating a Database</A
></DT
><DD
><DL
><DT
>14.4.1. <A
HREF="populate.html#DISABLE-AUTOCOMMIT"
>Disable Autocommit</A
></DT
><DT
>14.4.2. <A
HREF="populate.html#POPULATE-COPY-FROM"
>Use <TT
CLASS="COMMAND"
>COPY</TT
></A
></DT
><DT
>14.4.3. <A
HREF="populate.html#POPULATE-RM-INDEXES"
>Remove Indexes</A
></DT
><DT
>14.4.4. <A
HREF="populate.html#POPULATE-RM-FKEYS"
>Remove Foreign Key Constraints</A
></DT
><DT
>14.4.5. <A
HREF="populate.html#POPULATE-WORK-MEM"
>Increase <TT
CLASS="VARNAME"
>maintenance_work_mem</TT
></A
></DT
><DT
>14.4.6. <A
HREF="populate.html#POPULATE-CHECKPOINT-SEGMENTS"
>Increase <TT
CLASS="VARNAME"
>checkpoint_segments</TT
></A
></DT
><DT
>14.4.7. <A
HREF="populate.html#POPULATE-PITR"
>Disable WAL Archival and Streaming Replication</A
></DT
><DT
>14.4.8. <A
HREF="populate.html#POPULATE-ANALYZE"
>Run <TT
CLASS="COMMAND"
>ANALYZE</TT
> Afterwards</A
></DT
><DT
>14.4.9. <A
HREF="populate.html#POPULATE-PG-DUMP"
>Some Notes About <SPAN
CLASS="APPLICATION"
>pg_dump</SPAN
></A
></DT
></DL
></DD
><DT
>14.5. <A
HREF="non-durability.html"
>Non-Durable Settings</A
></DT
></DL
></DIV
><P
> Query performance can be affected by many things. Some of these can
be controlled by the user, while others are fundamental to the underlying
design of the system. This chapter provides some hints about understanding
and tuning <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
> performance.
</P
></DIV
><DIV
CLASS="NAVFOOTER"
><HR
ALIGN="LEFT"
WIDTH="100%"><TABLE
SUMMARY="Footer navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
><A
HREF="locking-indexes.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="index.html"
ACCESSKEY="H"
>Home</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
><A
HREF="using-explain.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
>Locking and Indexes</TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="sql.html"
ACCESSKEY="U"
>Up</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
>Using <TT
CLASS="COMMAND"
>EXPLAIN</TT
></TD
></TR
></TABLE
></DIV
></BODY
></HTML
>
|
