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1 # 2008 March 21
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 # This is a copy of speed1.test modified to user prepared statements.
15 #
16 # $Id: speed1p.explain,v 1.1 2008/04/16 12:57:48 drh Exp $
17 #
19 set testdir [file dirname $argv0]
20 source $testdir/tester.tcl
21 speed_trial_init speed1
23 # Set a uniform random seed
24 expr srand(0)
26 set sqlout [open speed1.txt w]
27 proc tracesql {sql} {
28 puts $::sqlout $sql\;
29 }
30 #db trace tracesql
32 # The number_name procedure below converts its argment (an integer)
33 # into a string which is the English-language name for that number.
34 #
35 # Example:
36 #
37 # puts [number_name 123] -> "one hundred twenty three"
38 #
39 set ones {zero one two three four five six seven eight nine
40 ten eleven twelve thirteen fourteen fifteen sixteen seventeen
41 eighteen nineteen}
42 set tens {{} ten twenty thirty forty fifty sixty seventy eighty ninety}
43 proc number_name {n} {
44 if {$n>=1000} {
45 set txt "[number_name [expr {$n/1000}]] thousand"
46 set n [expr {$n%1000}]
47 } else {
48 set txt {}
49 }
50 if {$n>=100} {
51 append txt " [lindex $::ones [expr {$n/100}]] hundred"
52 set n [expr {$n%100}]
53 }
54 if {$n>=20} {
55 append txt " [lindex $::tens [expr {$n/10}]]"
56 set n [expr {$n%10}]
57 }
58 if {$n>0} {
59 append txt " [lindex $::ones $n]"
60 }
61 set txt [string trim $txt]
62 if {$txt==""} {set txt zero}
63 return $txt
64 }
66 # Create a database schema.
67 #
68 do_test speed1p-1.0 {
69 execsql {
70 PRAGMA page_size=1024;
71 PRAGMA cache_size=8192;
72 PRAGMA locking_mode=EXCLUSIVE;
73 CREATE TABLE t1(a INTEGER, b INTEGER, c TEXT);
74 CREATE TABLE t2(a INTEGER, b INTEGER, c TEXT);
75 CREATE INDEX i2a ON t2(a);
76 CREATE INDEX i2b ON t2(b);
77 }
78 execsql {
79 SELECT name FROM sqlite_master ORDER BY 1;
80 }
81 } {i2a i2b t1 t2}
84 # 50000 INSERTs on an unindexed table
85 #
86 set list {}
87 for {set i 1} {$i<=50000} {incr i} {
88 set r [expr {int(rand()*500000)}]
89 set x [number_name $r]
90 lappend list $i $r $x
91 }
92 set script {
93 foreach {i r x} $::list {
94 db eval {INSERT INTO t1 VALUES($i,$r,$x)}
95 }
96 }
97 explain {INSERT INTO t1 VALUES($i,$r,$x)}
98 db eval BEGIN
99 speed_trial_tcl speed1p-insert1 50000 row $script
100 db eval COMMIT
102 # 50000 INSERTs on an indexed table
103 #
104 set list {}
105 for {set i 1} {$i<=50000} {incr i} {
106 set r [expr {int(rand()*500000)}]
107 set x [number_name $r]
108 lappend list $i $r $x
109 }
110 set script {
111 foreach {i r x} $::list {
112 db eval {INSERT INTO t2 VALUES($i,$r,$x)}
113 }
114 }
115 explain {INSERT INTO t2 VALUES($i,$r,$x)}
116 db eval BEGIN
117 speed_trial_tcl speed1p-insert2 50000 row $script
118 db eval COMMIT
122 # 50 SELECTs on an integer comparison. There is no index so
123 # a full table scan is required.
124 #
125 set list {}
126 for {set i 0} {$i<50} {incr i} {
127 set lwr [expr {$i*100}]
128 set upr [expr {($i+10)*100}]
129 lappend list $lwr $upr
130 }
131 set script {
132 foreach {lwr upr} $::list {
133 db eval {SELECT count(*), avg(b) FROM t1 WHERE b>=$lwr AND b<$upr}
134 }
135 }
136 explain {SELECT count(*), avg(b) FROM t1 WHERE b>=$lwr AND b<$upr}
137 db eval BEGIN
138 speed_trial_tcl speed1p-select1 [expr {50*50000}] row $script
139 db eval COMMIT
141 # 50 SELECTs on an LIKE comparison. There is no index so a full
142 # table scan is required.
143 #
144 set list {}
145 for {set i 0} {$i<50} {incr i} {
146 lappend list "%[number_name $i]%"
147 }
148 set script {
149 foreach pattern $::list {
150 db eval {SELECT count(*), avg(b) FROM t1 WHERE c LIKE $pattern}
151 }
152 }
153 explain {SELECT count(*), avg(b) FROM t1 WHERE c LIKE $pattern}
154 db eval BEGIN
155 speed_trial_tcl speed1p-select2 [expr {50*50000}] row $script
156 db eval COMMIT
158 # Create indices
159 #
160 explain {CREATE INDEX i1a ON t1(a)}
161 explain {CREATE INDEX i1b ON t1(b)}
162 db eval BEGIN
163 speed_trial speed1p-createidx 150000 row {
164 CREATE INDEX i1a ON t1(a);
165 CREATE INDEX i1b ON t1(b);
166 CREATE INDEX i1c ON t1(c);
167 }
168 db eval COMMIT
170 # 5000 SELECTs on an integer comparison where the integer is
171 # indexed.
172 #
173 set list {}
174 for {set i 0} {$i<5000} {incr i} {
175 set lwr [expr {$i*100}]
176 set upr [expr {($i+10)*100}]
177 lappend list $lwr $upr
178 }
179 set script {
180 foreach {lwr upr} $::list {
181 db eval {SELECT count(*), avg(b) FROM t1 WHERE b>=$lwr AND b<$upr}
182 }
183 }
184 explain {SELECT count(*), avg(b) FROM t1 WHERE b>=$lwr AND b<$upr}
185 db eval BEGIN
186 speed_trial_tcl speed1p-select3 5000 stmt $script
187 db eval COMMIT
189 # 100000 random SELECTs against rowid.
190 #
191 set list {}
192 for {set i 1} {$i<=100000} {incr i} {
193 set id [expr {int(rand()*50000)+1}]
194 lappend list $id
195 }
196 set script {
197 foreach id $::list {
198 db eval {SELECT c FROM t1 WHERE rowid=$id}
199 }
200 }
201 explain {SELECT c FROM t1 WHERE rowid=$id}
202 db eval BEGIN
203 speed_trial_tcl speed1p-select4 100000 row $script
204 db eval COMMIT
206 # 100000 random SELECTs against a unique indexed column.
207 #
208 set list {}
209 for {set i 1} {$i<=100000} {incr i} {
210 set id [expr {int(rand()*50000)+1}]
211 lappend list $id
212 }
213 set script {
214 foreach id $::list {
215 db eval {SELECT c FROM t1 WHERE a=$id}
216 }
217 }
218 explain {SELECT c FROM t1 WHERE a=$id}
219 db eval BEGIN
220 speed_trial_tcl speed1p-select5 100000 row $script
221 db eval COMMIT
223 # 50000 random SELECTs against an indexed column text column
224 #
225 set list [db eval {SELECT c FROM t1 ORDER BY random() LIMIT 50000}]
226 set script {
227 foreach c $::list {
228 db eval {SELECT c FROM t1 WHERE c=$c}
229 }
230 }
231 explain {SELECT c FROM t1 WHERE c=$c}
232 db eval BEGIN
233 speed_trial_tcl speed1p-select6 50000 row $script
234 db eval COMMIT
237 # Vacuum
238 speed_trial speed1p-vacuum 100000 row VACUUM
240 # 5000 updates of ranges where the field being compared is indexed.
241 #
242 set list {}
243 for {set i 0} {$i<5000} {incr i} {
244 set lwr [expr {$i*2}]
245 set upr [expr {($i+1)*2}]
246 lappend list $lwr $upr
247 }
248 set script {
249 foreach {lwr upr} $::list {
250 db eval {UPDATE t1 SET b=b*2 WHERE a>=$lwr AND a<$upr}
251 }
252 }
253 explain {UPDATE t1 SET b=b*2 WHERE a>=$lwr AND a<$upr}
254 db eval BEGIN
255 speed_trial_tcl speed1p-update1 5000 stmt $script
256 db eval COMMIT
258 # 50000 single-row updates. An index is used to find the row quickly.
259 #
260 set list {}
261 for {set i 0} {$i<50000} {incr i} {
262 set r [expr {int(rand()*500000)}]
263 lappend list $i $r
264 }
265 set script {
266 foreach {i r} $::list {
267 db eval {UPDATE t1 SET b=$r WHERE a=$i}
268 }
269 }
270 explain {UPDATE t1 SET b=$r WHERE a=$i}
271 db eval BEGIN
272 speed_trial_tcl speed1p-update2 50000 row $script
273 db eval COMMIT
275 # 1 big text update that touches every row in the table.
276 #
277 explain {UPDATE t1 SET c=a}
278 speed_trial speed1p-update3 50000 row {
279 UPDATE t1 SET c=a;
280 }
282 # Many individual text updates. Each row in the table is
283 # touched through an index.
284 #
285 set list {}
286 for {set i 1} {$i<=50000} {incr i} {
287 set r [expr {int(rand()*500000)}]
288 lappend list $i [number_name $r]
289 }
290 set script {
291 foreach {i x} $::list {
292 db eval {UPDATE t1 SET c=$x WHERE a=$i}
293 }
294 }
295 explain {UPDATE t1 SET c=$x WHERE a=$i}
296 db eval BEGIN
297 speed_trial_tcl speed1p-update4 50000 row $script
298 db eval COMMIT
300 # Delete all content in a table.
301 #
302 explain {DELETE FROM t1}
303 speed_trial speed1p-delete1 50000 row {DELETE FROM t1}
305 # Copy one table into another
306 #
307 explain {INSERT INTO t1 SELECT * FROM t2}
308 speed_trial speed1p-copy1 50000 row {INSERT INTO t1 SELECT * FROM t2}
310 # Delete all content in a table, one row at a time.
311 #
312 explain {DELETE FROM t1 WHERE 1}
313 speed_trial speed1p-delete2 50000 row {DELETE FROM t1 WHERE 1}
315 # Refill the table yet again
316 #
317 speed_trial speed1p-copy2 50000 row {INSERT INTO t1 SELECT * FROM t2}
319 # Drop the table and recreate it without its indices.
320 #
321 explain {DROP TABLE t1}
322 explain {CREATE TABLE tX(a INTEGER, b INTEGER, c TEXT)}
323 db eval BEGIN
324 speed_trial speed1p-drop1 50000 row {
325 DROP TABLE t1;
326 CREATE TABLE t1(a INTEGER, b INTEGER, c TEXT);
327 }
328 db eval COMMIT
330 # Refill the table yet again. This copy should be faster because
331 # there are no indices to deal with.
332 #
333 speed_trial speed1p-copy3 50000 row {INSERT INTO t1 SELECT * FROM t2}
335 # Select 20000 rows from the table at random.
336 #
337 explain {SELECT rowid FROM t1 ORDER BY random() LIMIT 20000}
338 speed_trial speed1p-random1 50000 row {
339 SELECT rowid FROM t1 ORDER BY random() LIMIT 20000
340 }
342 # Delete 20000 random rows from the table.
343 #
344 explain {DELETE FROM t1 WHERE rowid IN
345 (SELECT rowid FROM t1 ORDER BY random() LIMIT 20000)}
346 speed_trial speed1p-random-del1 20000 row {
347 DELETE FROM t1 WHERE rowid IN
348 (SELECT rowid FROM t1 ORDER BY random() LIMIT 20000)
349 }
350 do_test speed1p-1.1 {
351 db one {SELECT count(*) FROM t1}
352 } 30000
355 # Delete 20000 more rows at random from the table.
356 #
357 speed_trial speed1p-random-del2 20000 row {
358 DELETE FROM t1 WHERE rowid IN
359 (SELECT rowid FROM t1 ORDER BY random() LIMIT 20000)
360 }
361 do_test speed1p-1.2 {
362 db one {SELECT count(*) FROM t1}
363 } 10000
364 speed_trial_summary speed1
366 finish_test