Annotation of embedaddon/sqlite3/test/speed4.test, 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: 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
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