Annotation of embedaddon/sqlite3/test/speed4p.explain, revision 1.1
1.1 ! misho 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: speed4p.explain,v 1.1 2008/04/16 12:57:48 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 $txt
! 68: }
! 69:
! 70: # Summary of tests:
! 71: #
! 72: # speed4p-join1: Join three tables using IPK index.
! 73: # speed4p-join2: Join three tables using an index.
! 74: # speed4p-join3: Join two tables without an index.
! 75: #
! 76: # speed4p-view1: Querying a view.
! 77: # speed4p-table1: Same queries as in speed4p-view1, but run directly against
! 78: # the tables for comparison purposes.
! 79: #
! 80: # speed4p-subselect1: A SELECT statement that uses many sub-queries..
! 81: #
! 82: # speed4p-trigger1: An INSERT statement that fires a trigger.
! 83: # speed4p-trigger2: An UPDATE statement that fires a trigger.
! 84: # speed4p-trigger3: A DELETE statement that fires a trigger.
! 85: # speed4p-notrigger1: Same operation as trigger1, but without the trigger.
! 86: # speed4p-notrigger2: " trigger2 "
! 87: # speed4p-notrigger3: " trigger3 "
! 88: #
! 89:
! 90: # Set up the schema. Each of the tables t1, t2 and t3 contain 50,000 rows.
! 91: # This creates a database of around 16MB.
! 92: execsql {
! 93: PRAGMA page_size=1024;
! 94: PRAGMA cache_size=8192;
! 95: PRAGMA locking_mode=EXCLUSIVE;
! 96: BEGIN;
! 97: CREATE TABLE t1(rowid INTEGER PRIMARY KEY, i INTEGER, t TEXT);
! 98: CREATE TABLE t2(rowid INTEGER PRIMARY KEY, i INTEGER, t TEXT);
! 99: CREATE TABLE t3(rowid INTEGER PRIMARY KEY, i INTEGER, t TEXT);
! 100:
! 101: CREATE VIEW v1 AS SELECT rowid, i, t FROM t1;
! 102: CREATE VIEW v2 AS SELECT rowid, i, t FROM t2;
! 103: CREATE VIEW v3 AS SELECT rowid, i, t FROM t3;
! 104: }
! 105: for {set jj 1} {$jj <= 3} {incr jj} {
! 106: set stmt [string map "%T% t$jj" {INSERT INTO %T% VALUES(NULL, $i, $t)}]
! 107: for {set ii 0} {$ii < 50000} {incr ii} {
! 108: set i [expr {int(rand()*50000)}]
! 109: set t [number_name $i]
! 110: execsql $stmt
! 111: }
! 112: }
! 113: execsql {
! 114: CREATE INDEX i1 ON t1(t);
! 115: CREATE INDEX i2 ON t2(t);
! 116: CREATE INDEX i3 ON t3(t);
! 117: COMMIT;
! 118: }
! 119:
! 120: # Before running these tests, disable the compiled statement cache built into
! 121: # the Tcl interface. This is because we want to test the speed of SQL
! 122: # compilation as well as execution.
! 123: #
! 124: db cache size 0
! 125:
! 126: # Join t1, t2, t3 on IPK.
! 127: set sql "SELECT * FROM t1, t2, t3 WHERE t1.oid = t2.oid AND t2.oid = t3.oid"
! 128: explain $sql
! 129: speed_trial speed4p-join1 50000 row $sql
! 130:
! 131: # Join t1, t2, t3 on the non-IPK index.
! 132: set sql "SELECT * FROM t1, t2, t3 WHERE t1.t = t2.t AND t2.t = t3.t"
! 133: explain $sql
! 134: speed_trial speed4p-join2 50000 row $sql
! 135:
! 136: # Run 10000 simple queries against the views.
! 137: set script {
! 138: for {set ii 1} {$ii < 10000} {incr ii} {
! 139: set v [expr {$ii*3}]
! 140: set t [expr {$ii%3+1}]
! 141: db eval "SELECT * FROM v$t WHERE rowid = \$v"
! 142: }
! 143: }
! 144: explain {SELECT * FROm v1 WHERE rowid=$v}
! 145: speed_trial_tcl speed4p-view1 10000 stmt $script
! 146:
! 147: # Run the same 10000 simple queries as in the previous test case against
! 148: # the underlying tables. The compiled vdbe programs should be identical, so
! 149: # the only difference in running time is the extra time taken to compile
! 150: # the view definitions.
! 151: #
! 152: set script {
! 153: for {set ii 1} {$ii < 10000} {incr ii} {
! 154: set v [expr {$ii*3}]
! 155: set t [expr {$ii%3+1}]
! 156: db eval "SELECT t FROM t$t WHERE rowid = \$v"
! 157: }
! 158: }
! 159: explain {SELECT * FROM t1 WHERE rowid=$v}
! 160: speed_trial_tcl speed4p-table1 10000 stmt $script
! 161:
! 162: # Run a SELECT that uses sub-queries 10000 times. A total of 30000 sub-selects.
! 163: #
! 164: set script {
! 165: for {set ii 1} {$ii < 10000} {incr ii} {
! 166: set v [expr {$ii*3}]
! 167: db eval {
! 168: SELECT (SELECT t FROM t1 WHERE rowid = $v),
! 169: (SELECT t FROM t2 WHERE rowid = $v),
! 170: (SELECT t FROM t3 WHERE rowid = $v)
! 171: }
! 172: }
! 173: }
! 174: explain {
! 175: SELECT (SELECT t FROM t1 WHERE rowid = $v),
! 176: (SELECT t FROM t2 WHERE rowid = $v),
! 177: (SELECT t FROM t3 WHERE rowid = $v)
! 178: }
! 179: speed_trial_tcl speed4p-subselect1 10000 stmt $script
! 180:
! 181: # The following block tests the speed of some DML statements that cause
! 182: # triggers to fire.
! 183: #
! 184: execsql {
! 185: CREATE TABLE log(op TEXT, r INTEGER, i INTEGER, t TEXT);
! 186: CREATE TABLE t4(rowid INTEGER PRIMARY KEY, i INTEGER, t TEXT);
! 187: CREATE TRIGGER t4_trigger1 AFTER INSERT ON t4 BEGIN
! 188: INSERT INTO log VALUES('INSERT INTO t4', new.rowid, new.i, new.t);
! 189: END;
! 190: CREATE TRIGGER t4_trigger2 AFTER UPDATE ON t4 BEGIN
! 191: INSERT INTO log VALUES('UPDATE OF t4', new.rowid, new.i, new.t);
! 192: END;
! 193: CREATE TRIGGER t4_trigger3 AFTER DELETE ON t4 BEGIN
! 194: INSERT INTO log VALUES('DELETE OF t4', old.rowid, old.i, old.t);
! 195: END;
! 196: BEGIN;
! 197: }
! 198: set list {}
! 199: for {set ii 1} {$ii < 10000} {incr ii} {
! 200: lappend list $ii [number_name $ii]
! 201: }
! 202: set script {
! 203: foreach {ii name} $::list {
! 204: db eval {INSERT INTO t4 VALUES(NULL, $ii, $name)}
! 205: }
! 206: }
! 207: explain {INSERT INTO t4 VALUES(NULL, $ii, $name)}
! 208: speed_trial_tcl speed4p-trigger1 10000 stmt $script
! 209:
! 210: set list {}
! 211: for {set ii 1} {$ii < 20000} {incr ii 2} {
! 212: set ii2 [expr {$ii*2}]
! 213: lappend list $ii $ii2 [number_name $ii2]
! 214: }
! 215: set script {
! 216: foreach {ii ii2 name} $::list {
! 217: db eval {
! 218: UPDATE t4 SET i = $ii2, t = $name WHERE rowid = $ii;
! 219: }
! 220: }
! 221: }
! 222: explain {UPDATE t4 SET i = $ii2, t = $name WHERE rowid = $ii}
! 223: speed_trial_tcl speed4p-trigger2 10000 stmt $script
! 224:
! 225: set script {
! 226: for {set ii 1} {$ii < 20000} {incr ii 2} {
! 227: db eval {DELETE FROM t4 WHERE rowid = $ii}
! 228: }
! 229: }
! 230: explain {DELETE FROM t4 WHERE rowid = $ii}
! 231: speed_trial_tcl speed4p-trigger3 10000 stmt $script
! 232: execsql {COMMIT}
! 233:
! 234: # The following block contains the same tests as the above block that
! 235: # tests triggers, with one crucial difference: no triggers are defined.
! 236: # So the difference in speed between these tests and the preceding ones
! 237: # is the amount of time taken to compile and execute the trigger programs.
! 238: #
! 239: execsql {
! 240: DROP TABLE t4;
! 241: DROP TABLE log;
! 242: VACUUM;
! 243: CREATE TABLE t4(rowid INTEGER PRIMARY KEY, i INTEGER, t TEXT);
! 244: BEGIN;
! 245: }
! 246: set list {}
! 247: for {set ii 1} {$ii < 10000} {incr ii} {
! 248: lappend list $ii [number_name $ii]
! 249: }
! 250: set script {
! 251: foreach {ii name} $::list {
! 252: db eval {INSERT INTO t4 VALUES(NULL, $ii, $name);}
! 253: }
! 254: }
! 255: explain {INSERT INTO t4 VALUES(NULL, $ii, $name)}
! 256: speed_trial_tcl speed4p-notrigger1 10000 stmt $script
! 257:
! 258: set list {}
! 259: for {set ii 1} {$ii < 20000} {incr ii 2} {
! 260: set ii2 [expr {$ii*2}]
! 261: lappend list $ii $ii2 [number_name $ii2]
! 262: }
! 263: set script {
! 264: foreach {ii ii2 name} $::list {
! 265: db eval {
! 266: UPDATE t4 SET i = $ii2, t = $name WHERE rowid = $ii;
! 267: }
! 268: }
! 269: }
! 270: explain {UPDATE t4 SET i = $ii2, t = $name WHERE rowid = $ii}
! 271: speed_trial_tcl speed4p-notrigger2 10000 stmt $script
! 272:
! 273: set script {
! 274: for {set ii 1} {$ii < 20000} {incr ii 2} {
! 275: db eval {DELETE FROM t4 WHERE rowid = $ii}
! 276: }
! 277: }
! 278: explain {DELETE FROM t4 WHERE rowid = $ii}
! 279: speed_trial_tcl speed4p-notrigger3 10000 stmt $script
! 280: execsql {COMMIT}
! 281:
! 282: speed_trial_summary speed4
! 283: finish_test
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