3 # The author disclaims copyright to this source code. In place of
4 # a legal notice, here is a blessing:
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.
10 #*************************************************************************
11 # This file implements regression tests for SQLite library. The
12 # focus of this script is measuring executing speed.
14 # $Id: speed1.test,v 1.11 2009/04/09 01:23:49 drh Exp $
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 $testdir/tester.tcl
23 speed_trial_init speed1
25 # Set a uniform random seed
28 set sqlout [open speed1.txt w]
34 # The number_name procedure below converts its argment (an integer)
35 # into a string which is the English-language name for that number.
39 # puts [number_name 123] -> "one hundred twenty three"
41 set ones {zero one two three four five six seven eight nine
42 ten eleven twelve thirteen fourteen fifteen sixteen seventeen
44 set tens {{} ten twenty thirty forty fifty sixty seventy eighty ninety}
45 proc number_name {n} {
47 set txt "[number_name [expr {$n/1000}]] thousand"
48 set n [expr {$n%1000}]
53 append txt " [lindex $::ones [expr {$n/100}]] hundred"
57 append txt " [lindex $::tens [expr {$n/10}]]"
61 append txt " [lindex $::ones $n]"
63 set txt [string trim $txt]
64 if {$txt==""} {set txt zero}
68 # Create a database schema.
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);
81 SELECT name FROM sqlite_master ORDER BY 1;
86 # 50000 INSERTs on an unindexed table
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"
94 speed_trial speed1-insert1 50000 row $sql
97 # 50000 INSERTs on an indexed table
100 for {set i 1} {$i<=50000} {incr i} {
101 set r [expr {int(rand()*500000)}]
102 append sql "INSERT INTO t2 VALUES($i,$r,'[number_name $r]');\n"
105 speed_trial speed1-insert2 50000 row $sql
110 # 50 SELECTs on an integer comparison. There is no index so
111 # a full table scan is required.
114 for {set i 0} {$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;"
120 speed_trial speed1-select1 [expr {50*50000}] row $sql
123 # 50 SELECTs on an LIKE comparison. There is no index so a full
124 # table scan is required.
127 for {set i 0} {$i<50} {incr i} {
129 "SELECT count(*), avg(b) FROM t1 WHERE c LIKE '%[number_name $i]%';"
132 speed_trial speed1-select2 [expr {50*50000}] row $sql
138 speed_trial speed1-createidx 150000 row {
139 CREATE INDEX i1a ON t1(a);
140 CREATE INDEX i1b ON t1(b);
141 CREATE INDEX i1c ON t1(c);
145 # 5000 SELECTs on an integer comparison where the integer is
149 for {set i 0} {$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;"
155 speed_trial speed1-select3 5000 stmt $sql
158 # 100000 random SELECTs against rowid.
161 for {set i 1} {$i<=100000} {incr i} {
162 set id [expr {int(rand()*50000)+1}]
163 append sql "SELECT c FROM t1 WHERE rowid=$id;"
166 speed_trial speed1-select4 100000 row $sql
169 # 100000 random SELECTs against a unique indexed column.
172 for {set i 1} {$i<=100000} {incr i} {
173 set id [expr {int(rand()*50000)+1}]
174 append sql "SELECT c FROM t1 WHERE a=$id;"
177 speed_trial speed1-select5 100000 row $sql
180 # 50000 random SELECTs against an indexed column text column
183 db eval {SELECT c FROM t1 ORDER BY random() LIMIT 50000} {
184 append sql "SELECT c FROM t1 WHERE c='$c';"
187 speed_trial speed1-select6 50000 row $sql
192 speed_trial speed1-vacuum 100000 row VACUUM
194 # 5000 updates of ranges where the field being compared is indexed.
197 for {set i 0} {$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;"
203 speed_trial speed1-update1 5000 stmt $sql
206 # 50000 single-row updates. An index is used to find the row quickly.
209 for {set i 0} {$i<50000} {incr i} {
210 set r [expr {int(rand()*500000)}]
211 append sql "UPDATE t1 SET b=$r WHERE a=$i;"
214 speed_trial speed1-update2 50000 row $sql
217 # 1 big text update that touches every row in the table.
219 speed_trial speed1-update3 50000 row {
223 # Many individual text updates. Each row in the table is
224 # touched through an index.
227 for {set i 1} {$i<=50000} {incr i} {
228 set r [expr {int(rand()*500000)}]
229 append sql "UPDATE t1 SET c='[number_name $r]' WHERE a=$i;"
232 speed_trial speed1-update4 50000 row $sql
235 # Delete all content in a table.
237 speed_trial speed1-delete1 50000 row {DELETE FROM t1}
239 # Copy one table into another
241 speed_trial speed1-copy1 50000 row {INSERT INTO t1 SELECT * FROM t2}
243 # Delete all content in a table, one row at a time.
245 speed_trial speed1-delete2 50000 row {DELETE FROM t1 WHERE 1}
247 # Refill the table yet again
249 speed_trial speed1-copy2 50000 row {INSERT INTO t1 SELECT * FROM t2}
251 # Drop the table and recreate it without its indices.
254 speed_trial speed1-drop1 50000 row {
256 CREATE TABLE t1(a INTEGER, b INTEGER, c TEXT);
260 # Refill the table yet again. This copy should be faster because
261 # there are no indices to deal with.
263 speed_trial speed1-copy3 50000 row {INSERT INTO t1 SELECT * FROM t2}
265 # Select 20000 rows from the table at random.
267 speed_trial speed1-random1 50000 row {
268 SELECT rowid FROM t1 ORDER BY random() LIMIT 20000
271 # Delete 20000 random rows from the table.
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)
278 db one {SELECT count(*) FROM t1}
282 # Delete 20000 more rows at random from the table.
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)
289 db one {SELECT count(*) FROM t1}
291 speed_trial_summary speed1
295 eval sqlite3_config_lookaside $old_lookaside
297 autoinstall_test_functions