1 # 2007 October 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. More specifically, 13 # the focus is on the speed of: 14 # 15 # * joins 16 # * views 17 # * sub-selects 18 # * triggers 19 # 20 # $Id: speed4.test,v 1.2 2008/07/12 14:52:20 drh Exp $ 21 # 22 23 set testdir [file dirname $argv0] 24 source $testdir/tester.tcl 25 speed_trial_init speed1 26 27 # Set a uniform random seed 28 expr srand(0) 29 30 set sqlout [open speed1.txt w] 31 proc tracesql {sql} { 32 puts $::sqlout $sql\; 33 } 34 #db trace tracesql 35 36 # The number_name procedure below converts its argment (an integer) 37 # into a string which is the English-language name for that number. 38 # 39 # Example: 40 # 41 # puts [number_name 123] -> "one hundred twenty three" 42 # 43 set ones {zero one two three four five six seven eight nine 44 ten eleven twelve thirteen fourteen fifteen sixteen seventeen 45 eighteen nineteen} 46 set tens {{} ten twenty thirty forty fifty sixty seventy eighty ninety} 47 proc number_name {n} { 48 if {$n>=1000} { 49 set txt "[number_name [expr {$n/1000}]] thousand" 50 set n [expr {$n%1000}] 51 } else { 52 set txt {} 53 } 54 if {$n>=100} { 55 append txt " [lindex $::ones [expr {$n/100}]] hundred" 56 set n [expr {$n%100}] 57 } 58 if {$n>=20} { 59 append txt " [lindex $::tens [expr {$n/10}]]" 60 set n [expr {$n%10}] 61 } 62 if {$n>0} { 63 append txt " [lindex $::ones $n]" 64 } 65 set txt [string trim $txt] 66 if {$txt==""} {set txt zero} 67 return $txt 68 } 69 70 # Summary of tests: 71 # 72 # speed4-join1: Join three tables using IPK index. 73 # speed4-join2: Join three tables using an index. 74 # speed4-join3: Join two tables without an index. 75 # 76 # speed4-view1: Querying a view. 77 # speed4-table1: Same queries as in speed4-view1, but run directly against 78 # the tables for comparison purposes. 79 # 80 # speed4-subselect1: A SELECT statement that uses many sub-queries.. 81 # 82 # speed4-trigger1: An INSERT statement that fires a trigger. 83 # speed4-trigger2: An UPDATE statement that fires a trigger. 84 # speed4-trigger3: A DELETE statement that fires a trigger. 85 # speed4-notrigger1: Same operation as trigger1, but without the trigger. 86 # speed4-notrigger2: " trigger2 " 87 # speed4-notrigger3: " trigger3 " 88 # 89 90 # Set up the schema. Each of the tables t1, t2 and t3 contain 50,000 rows. 91 # This creates a database of around 16MB. 92 execsql { 93 BEGIN; 94 CREATE TABLE t1(rowid INTEGER PRIMARY KEY, i INTEGER, t TEXT); 95 CREATE TABLE t2(rowid INTEGER PRIMARY KEY, i INTEGER, t TEXT); 96 CREATE TABLE t3(rowid INTEGER PRIMARY KEY, i INTEGER, t TEXT); 97 98 CREATE VIEW v1 AS SELECT rowid, i, t FROM t1; 99 CREATE VIEW v2 AS SELECT rowid, i, t FROM t2; 100 CREATE VIEW v3 AS SELECT rowid, i, t FROM t3; 101 } 102 for {set jj 1} {$jj <= 3} {incr jj} { 103 set stmt [string map "%T% t$jj" {INSERT INTO %T% VALUES(NULL, $i, $t)}] 104 for {set ii 0} {$ii < 50000} {incr ii} { 105 set i [expr {int(rand()*50000)}] 106 set t [number_name $i] 107 execsql $stmt 108 } 109 } 110 execsql { 111 CREATE INDEX i1 ON t1(t); 112 CREATE INDEX i2 ON t2(t); 113 CREATE INDEX i3 ON t3(t); 114 COMMIT; 115 } 116 117 # Before running these tests, disable the compiled statement cache built into 118 # the Tcl interface. This is because we want to test the speed of SQL 119 # compilation as well as execution. 120 # 121 db cache size 0 122 123 # Join t1, t2, t3 on IPK. 124 set sql "SELECT * FROM t1, t2, t3 WHERE t1.oid = t2.oid AND t2.oid = t3.oid" 125 speed_trial speed4-join1 50000 row $sql 126 127 # Join t1, t2, t3 on the non-IPK index. 128 set sql "SELECT * FROM t1, t2, t3 WHERE t1.t = t2.t AND t2.t = t3.t" 129 speed_trial speed4-join2 50000 row $sql 130 131 # Run 10000 simple queries against the views. 132 set sql "" 133 for {set ii 1} {$ii < 10000} {incr ii} { 134 append sql "SELECT * FROM v[expr {($ii%3)+1}] WHERE rowid = [expr {$ii*3}];" 135 } 136 speed_trial speed4-view1 10000 stmt $sql 137 138 # Run the same 10000 simple queries as in the previous test case against 139 # the underlying tables. The compiled vdbe programs should be identical, so 140 # the only difference in running time is the extra time taken to compile 141 # the view definitions. 142 # 143 set sql "" 144 for {set ii 1} {$ii < 10000} {incr ii} { 145 append sql "SELECT t FROM t[expr {($ii%3)+1}] WHERE rowid = [expr {$ii*3}];" 146 } 147 speed_trial speed4-table1 10000 stmt $sql 148 149 # Run a SELECT that uses sub-queries 10000 times. A total of 30000 sub-selects. 150 # 151 set sql "" 152 for {set ii 1} {$ii < 10000} {incr ii} { 153 append sql " 154 SELECT (SELECT t FROM t1 WHERE rowid = [expr {$ii*3}]), 155 (SELECT t FROM t2 WHERE rowid = [expr {$ii*3}]), 156 (SELECT t FROM t3 WHERE rowid = [expr {$ii*3}]) 157 ;" 158 } 159 speed_trial speed4-subselect1 10000 stmt $sql 160 161 # The following block tests the speed of some DML statements that cause 162 # triggers to fire. 163 # 164 execsql { 165 CREATE TABLE log(op TEXT, r INTEGER, i INTEGER, t TEXT); 166 CREATE TABLE t4(rowid INTEGER PRIMARY KEY, i INTEGER, t TEXT); 167 CREATE TRIGGER t4_trigger1 AFTER INSERT ON t4 BEGIN 168 INSERT INTO log VALUES('INSERT INTO t4', new.rowid, new.i, new.t); 169 END; 170 CREATE TRIGGER t4_trigger2 AFTER UPDATE ON t4 BEGIN 171 INSERT INTO log VALUES('UPDATE OF t4', new.rowid, new.i, new.t); 172 END; 173 CREATE TRIGGER t4_trigger3 AFTER DELETE ON t4 BEGIN 174 INSERT INTO log VALUES('DELETE OF t4', old.rowid, old.i, old.t); 175 END; 176 BEGIN; 177 } 178 set sql "" 179 for {set ii 1} {$ii < 10000} {incr ii} { 180 append sql "INSERT INTO t4 VALUES(NULL, $ii, '[number_name $ii]');" 181 } 182 speed_trial speed4-trigger1 10000 stmt $sql 183 set sql "" 184 for {set ii 1} {$ii < 20000} {incr ii 2} { 185 set ii2 [expr {$ii*2}] 186 append sql " 187 UPDATE t4 SET i = $ii2, t = '[number_name $ii2]' WHERE rowid = $ii; 188 " 189 } 190 speed_trial speed4-trigger2 10000 stmt $sql 191 set sql "" 192 for {set ii 1} {$ii < 20000} {incr ii 2} { 193 append sql "DELETE FROM t4 WHERE rowid = $ii;" 194 } 195 speed_trial speed4-trigger3 10000 stmt $sql 196 execsql {COMMIT} 197 198 # The following block contains the same tests as the above block that 199 # tests triggers, with one crucial difference: no triggers are defined. 200 # So the difference in speed between these tests and the preceding ones 201 # is the amount of time taken to compile and execute the trigger programs. 202 # 203 execsql { 204 DROP TABLE t4; 205 DROP TABLE log; 206 VACUUM; 207 CREATE TABLE t4(rowid INTEGER PRIMARY KEY, i INTEGER, t TEXT); 208 BEGIN; 209 } 210 set sql "" 211 for {set ii 1} {$ii < 10000} {incr ii} { 212 append sql "INSERT INTO t4 VALUES(NULL, $ii, '[number_name $ii]');" 213 } 214 speed_trial speed4-notrigger1 10000 stmt $sql 215 set sql "" 216 for {set ii 1} {$ii < 20000} {incr ii 2} { 217 set ii2 [expr {$ii*2}] 218 append sql " 219 UPDATE t4 SET i = $ii2, t = '[number_name $ii2]' WHERE rowid = $ii; 220 " 221 } 222 speed_trial speed4-notrigger2 10000 stmt $sql 223 set sql "" 224 for {set ii 1} {$ii < 20000} {incr ii 2} { 225 append sql "DELETE FROM t4 WHERE rowid = $ii;" 226 } 227 speed_trial speed4-notrigger3 10000 stmt $sql 228 execsql {COMMIT} 229 230 speed_trial_summary speed4 231 finish_test 232
