wasCSharpSQLite – Blame information for rev 1

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1 office 1 # 2006 November 23
2 #
3 # The author disclaims copyright to this source code. In place of
4 # a legal notice, here is a blessing:
5 #
6 # May you do good and not evil.
7 # May you find forgiveness for yourself and forgive others.
8 # May you share freely, never taking more than you give.
9 #
10 #*************************************************************************
11 # This file implements regression tests for SQLite library. The
12 # focus of this script is measuring executing speed.
13 #
14 # $Id: speed1.test,v 1.11 2009/04/09 01:23:49 drh Exp $
15 #
16  
17 sqlite3_shutdown
18 #sqlite3_config_scratch 29000 1
19 set old_lookaside [sqlite3_config_lookaside 1000 300]
20 #sqlite3_config_pagecache 1024 10000
21 set testdir [file dirname $argv0]
22 source $testdir/tester.tcl
23 speed_trial_init speed1
24  
25 # Set a uniform random seed
26 expr srand(0)
27  
28 set sqlout [open speed1.txt w]
29 proc tracesql {sql} {
30 puts $::sqlout $sql\;
31 }
32 #db trace tracesql
33  
34 # The number_name procedure below converts its argment (an integer)
35 # into a string which is the English-language name for that number.
36 #
37 # Example:
38 #
39 # puts [number_name 123] -> "one hundred twenty three"
40 #
41 set ones {zero one two three four five six seven eight nine
42 ten eleven twelve thirteen fourteen fifteen sixteen seventeen
43 eighteen nineteen}
44 set tens {{} ten twenty thirty forty fifty sixty seventy eighty ninety}
45 proc number_name {n} {
46 if {$n>=1000} {
47 set txt "[number_name [expr {$n/1000}]] thousand"
48 set n [expr {$n%1000}]
49 } else {
50 set txt {}
51 }
52 if {$n>=100} {
53 append txt " [lindex $::ones [expr {$n/100}]] hundred"
54 set n [expr {$n%100}]
55 }
56 if {$n>=20} {
57 append txt " [lindex $::tens [expr {$n/10}]]"
58 set n [expr {$n%10}]
59 }
60 if {$n>0} {
61 append txt " [lindex $::ones $n]"
62 }
63 set txt [string trim $txt]
64 if {$txt==""} {set txt zero}
65 return $txt
66 }
67  
68 # Create a database schema.
69 #
70 do_test speed1-1.0 {
71 execsql {
72 PRAGMA page_size=1024;
73 PRAGMA cache_size=8192;
74 PRAGMA locking_mode=EXCLUSIVE;
75 CREATE TABLE t1(a INTEGER, b INTEGER, c TEXT);
76 CREATE TABLE t2(a INTEGER, b INTEGER, c TEXT);
77 CREATE INDEX i2a ON t2(a);
78 CREATE INDEX i2b ON t2(b);
79 }
80 execsql {
81 SELECT name FROM sqlite_master ORDER BY 1;
82 }
83 } {i2a i2b t1 t2}
84  
85  
86 # 50000 INSERTs on an unindexed table
87 #
88 set sql {}
89 for {set i 1} {$i<=50000} {incr i} {
90 set r [expr {int(rand()*500000)}]
91 append sql "INSERT INTO t1 VALUES($i,$r,'[number_name $r]');\n"
92 }
93 db eval BEGIN
94 speed_trial speed1-insert1 50000 row $sql
95 db eval COMMIT
96  
97 # 50000 INSERTs on an indexed table
98 #
99 set sql {}
100 for {set i 1} {$i<=50000} {incr i} {
101 set r [expr {int(rand()*500000)}]
102 append sql "INSERT INTO t2 VALUES($i,$r,'[number_name $r]');\n"
103 }
104 db eval BEGIN
105 speed_trial speed1-insert2 50000 row $sql
106 db eval COMMIT
107  
108  
109  
110 # 50 SELECTs on an integer comparison. There is no index so
111 # a full table scan is required.
112 #
113 set sql {}
114 for {set i 0} {$i<50} {incr i} {
115 set lwr [expr {$i*100}]
116 set upr [expr {($i+10)*100}]
117 append sql "SELECT count(*), avg(b) FROM t1 WHERE b>=$lwr AND b<$upr;"
118 }
119 db eval BEGIN
120 speed_trial speed1-select1 [expr {50*50000}] row $sql
121 db eval COMMIT
122  
123 # 50 SELECTs on an LIKE comparison. There is no index so a full
124 # table scan is required.
125 #
126 set sql {}
127 for {set i 0} {$i<50} {incr i} {
128 append sql \
129 "SELECT count(*), avg(b) FROM t1 WHERE c LIKE '%[number_name $i]%';"
130 }
131 db eval BEGIN
132 speed_trial speed1-select2 [expr {50*50000}] row $sql
133 db eval COMMIT
134  
135 # Create indices
136 #
137 db eval BEGIN
138 speed_trial speed1-createidx 150000 row {
139 CREATE INDEX i1a ON t1(a);
140 CREATE INDEX i1b ON t1(b);
141 CREATE INDEX i1c ON t1(c);
142 }
143 db eval COMMIT
144  
145 # 5000 SELECTs on an integer comparison where the integer is
146 # indexed.
147 #
148 set sql {}
149 for {set i 0} {$i<5000} {incr i} {
150 set lwr [expr {$i*100}]
151 set upr [expr {($i+10)*100}]
152 append sql "SELECT count(*), avg(b) FROM t1 WHERE b>=$lwr AND b<$upr;"
153 }
154 db eval BEGIN
155 speed_trial speed1-select3 5000 stmt $sql
156 db eval COMMIT
157  
158 # 100000 random SELECTs against rowid.
159 #
160 set sql {}
161 for {set i 1} {$i<=100000} {incr i} {
162 set id [expr {int(rand()*50000)+1}]
163 append sql "SELECT c FROM t1 WHERE rowid=$id;"
164 }
165 db eval BEGIN
166 speed_trial speed1-select4 100000 row $sql
167 db eval COMMIT
168  
169 # 100000 random SELECTs against a unique indexed column.
170 #
171 set sql {}
172 for {set i 1} {$i<=100000} {incr i} {
173 set id [expr {int(rand()*50000)+1}]
174 append sql "SELECT c FROM t1 WHERE a=$id;"
175 }
176 db eval BEGIN
177 speed_trial speed1-select5 100000 row $sql
178 db eval COMMIT
179  
180 # 50000 random SELECTs against an indexed column text column
181 #
182 set sql {}
183 db eval {SELECT c FROM t1 ORDER BY random() LIMIT 50000} {
184 append sql "SELECT c FROM t1 WHERE c='$c';"
185 }
186 db eval BEGIN
187 speed_trial speed1-select6 50000 row $sql
188 db eval COMMIT
189  
190  
191 # Vacuum
192 speed_trial speed1-vacuum 100000 row VACUUM
193  
194 # 5000 updates of ranges where the field being compared is indexed.
195 #
196 set sql {}
197 for {set i 0} {$i<5000} {incr i} {
198 set lwr [expr {$i*2}]
199 set upr [expr {($i+1)*2}]
200 append sql "UPDATE t1 SET b=b*2 WHERE a>=$lwr AND a<$upr;"
201 }
202 db eval BEGIN
203 speed_trial speed1-update1 5000 stmt $sql
204 db eval COMMIT
205  
206 # 50000 single-row updates. An index is used to find the row quickly.
207 #
208 set sql {}
209 for {set i 0} {$i<50000} {incr i} {
210 set r [expr {int(rand()*500000)}]
211 append sql "UPDATE t1 SET b=$r WHERE a=$i;"
212 }
213 db eval BEGIN
214 speed_trial speed1-update2 50000 row $sql
215 db eval COMMIT
216  
217 # 1 big text update that touches every row in the table.
218 #
219 speed_trial speed1-update3 50000 row {
220 UPDATE t1 SET c=a;
221 }
222  
223 # Many individual text updates. Each row in the table is
224 # touched through an index.
225 #
226 set sql {}
227 for {set i 1} {$i<=50000} {incr i} {
228 set r [expr {int(rand()*500000)}]
229 append sql "UPDATE t1 SET c='[number_name $r]' WHERE a=$i;"
230 }
231 db eval BEGIN
232 speed_trial speed1-update4 50000 row $sql
233 db eval COMMIT
234  
235 # Delete all content in a table.
236 #
237 speed_trial speed1-delete1 50000 row {DELETE FROM t1}
238  
239 # Copy one table into another
240 #
241 speed_trial speed1-copy1 50000 row {INSERT INTO t1 SELECT * FROM t2}
242  
243 # Delete all content in a table, one row at a time.
244 #
245 speed_trial speed1-delete2 50000 row {DELETE FROM t1 WHERE 1}
246  
247 # Refill the table yet again
248 #
249 speed_trial speed1-copy2 50000 row {INSERT INTO t1 SELECT * FROM t2}
250  
251 # Drop the table and recreate it without its indices.
252 #
253 db eval BEGIN
254 speed_trial speed1-drop1 50000 row {
255 DROP TABLE t1;
256 CREATE TABLE t1(a INTEGER, b INTEGER, c TEXT);
257 }
258 db eval COMMIT
259  
260 # Refill the table yet again. This copy should be faster because
261 # there are no indices to deal with.
262 #
263 speed_trial speed1-copy3 50000 row {INSERT INTO t1 SELECT * FROM t2}
264  
265 # Select 20000 rows from the table at random.
266 #
267 speed_trial speed1-random1 50000 row {
268 SELECT rowid FROM t1 ORDER BY random() LIMIT 20000
269 }
270  
271 # Delete 20000 random rows from the table.
272 #
273 speed_trial speed1-random-del1 20000 row {
274 DELETE FROM t1 WHERE rowid IN
275 (SELECT rowid FROM t1 ORDER BY random() LIMIT 20000)
276 }
277 do_test speed1-1.1 {
278 db one {SELECT count(*) FROM t1}
279 } 30000
280  
281  
282 # Delete 20000 more rows at random from the table.
283 #
284 speed_trial speed1-random-del2 20000 row {
285 DELETE FROM t1 WHERE rowid IN
286 (SELECT rowid FROM t1 ORDER BY random() LIMIT 20000)
287 }
288 do_test speed1-1.2 {
289 db one {SELECT count(*) FROM t1}
290 } 10000
291 speed_trial_summary speed1
292  
293 db close
294 sqlite3_shutdown
295 eval sqlite3_config_lookaside $old_lookaside
296 sqlite3_initialize
297 autoinstall_test_functions
298 finish_test