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 299
